National Health Statistics Reports Number 150  December 28, 2020

The 2020 International Classification of Diseases, 10th Revision, Clinical Modification Injury Diagnosis Framework for Categorizing Injuries by Body Region and Nature of Injury by Holly Hedegaard, M.D., M.S.P.H., National Center for Health Statistics; Renee L. Johnson, M.S.P.H., R.P.T., National Center for Injury Prevention and Control; Matthew F. Garnett, M.P.H., National Center for Health Statistics; and Karen E. Thomas, M.P.H., National Center for Injury Prevention and Control

Abstract Introduction Background—Injury diagnosis frameworks, or matrices, based on the Injury diagnosis frameworks, such International Classification of Diseases (ICD) provide standardized categories for as the Barell matrix (1) and the Injury reporting injuries by body region and nature of injury. In 2016, the National Center for Mortality Diagnosis (IMD) matrix (2), Health Statistics (NCHS) and the National Center for Injury Prevention and Control provide standardized categories for (NCIPC) published a proposed injury diagnosis matrix for use with data coded using reporting injuries by body region and the ICD, 10th Revision, Clinical Modification (ICD–10–CM). At the time the proposed nature of injury. Nature of injury refers matrix was developed, ICD–10–CM coded data were not available to evaluate the to the type of anatomic or physiologic performance of the proposed matrix. As data became available, NCHS and NCIPC disruption (e.g., fractures, dislocations, received recommendations from clinicians and researchers to improve the consistency sprains, open wounds, burns, injuries and clinical applicability of categorization of codes within the matrix. This report to internal organs, or poisoning) that describes the modifications made to the 2016 proposed ICD–10–CM injury diagnosis occurred as a result of an injury event matrix and presents the final 2020 ICD–10–CM injury diagnosis matrix. (e.g., fall, motor vehicle crash, gunshot, Methods—Comments on the 2016 proposed matrix were received from several or ingestion). The use of injury diagnosis federal agencies, military health centers, state health departments, researchers, and frameworks (matrices) promotes others. Additionally, subject matter experts from NCHS, NCIPC, the Council of consistency when monitoring injuries State and Territorial Epidemiologists, and others reviewed code descriptions, coding over time and across data sources. guidelines, updates to the ICD–10–CM code set, and other materials to identify The Barell and IMD matrices are possible needed changes to the 2016 proposed ICD–10–CM injury diagnosis matrix. based on nature-of-injury (i.e., injury Results—Consideration of issues raised by clinicians and researchers and from diagnosis) codes from the International the internal review resulted in relocation of approximately 3% of the 9,000 codes Classification of Diseases (ICD). ICD in the 2016 proposed ICD–10–CM injury diagnosis matrix. These relocations is a classification system developed generally involved changes to the assigned nature-of-injury category. Additionally, and published by the World Health approximately 200 new injury diagnosis codes not available at the time the 2016 Organization to promote international proposed matrix was developed were added to create the final 2020 matrix. comparability in the collection, Conclusions—The 2020 final ICD–10–CM injury diagnosis matrix provides classification, and presentation standard categories for reporting injuries by body region and nature of injury. Use of of mortality statistics (3). In the this tool promotes consistency for comparisons across populations and over time. United States, the ICD, Ninth Revision (ICD–9) was used to classify mortality Keywords: injury surveillance • injury morbidity • injury diagnosis matrix • data from 1979 to 1998 and the ICD, 10th classification

U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention National Center for Health Statistics

NCHS reports can be downloaded from: https://www.cdc.gov/nchs/products/index.htm. Page 2 National Health Statistics Reports  Number 150  December 28, 2020

Revision (ICD–10) was used from 1999 Development of the 2016 into separate columns for Burns and for forward. Clinical modifications of ICD proposed ICD–10–CM injury Corrosions; and Other specified injury, have also been developed for use with diagnosis matrix divided into separate columns for Sprains morbidity data (4,5). Though structurally and strains, Injury to nerves, Injury to similar to ICD for mortality, the clinical The process for developing the muscles and tendons, and Other injury). modifications provide an expanded 2016 proposed ICD–10–CM injury The next step in developing the set of codes needed for capturing the diagnosis matrix has been described in 2016 proposed ICD–10–CM injury detailed information obtained in clinical detail elsewhere (6). A brief description diagnosis matrix involved placement settings. In the United States, the ICD, is provided here. In general, the process of the individual ICD–10–CM nature- Ninth Revision, Clinical Modification involved creating the basic structure of-injury (diagnosis) codes in a specific (ICD–9–CM) was used to classify of the matrix (rows and columns) and body-region-by-nature-of-injury cell. A morbidity data from 1979 through then placing the ICD–10–CM nature-of- subset of the injury diagnosis codes from September 30, 2015. Injury diagnosis injury codes in a given body-region-by- Chapter 19 of the ICD–10–CM tabular matrices were developed for use with nature-of-injury cell within the matrix. list were included in the 2016 proposed ICD–9–CM-coded morbidity data (the In developing the proposed matrix, matrix (Table A) (7). Several guiding Barell matrix) (1) and for use with aspects of both the ICD–9–CM injury principles were considered to determine ICD–10 coded mortality data (the IMD diagnosis matrix for morbidity data (1) code placement: matrix) (2). These matrices have provided and the ICD–10 injury diagnosis matrix ● Because most ICD–10–CM codes guidance for standardized categorization for mortality data (2) and differences were derived from ICD–10 codes of injury diagnosis codes for more than between the two matrices were and because the underlying structure 20 years. considered (6). The basic structure of of the 2016 proposed ICD–10–CM Effective October 1, 2015, the the 2016 proposed ICD–10–CM injury injury diagnosis matrix was based on U.S. Department of Health and Human diagnosis matrix is modeled on that that of the ICD–10 injury diagnosis Services required all hospitals and health of the ICD–10 matrix, with additional matrix for mortality data, in general, care providers covered by the Health rows and columns as needed for better a code was first placed in the same Insurance Portability and Accountability comparability with the ICD–9–CM cell as the related ICD–10 code in Act to use the ICD, 10th Revision, matrix. the ICD–10 injury diagnosis matrix. Clinical Modification (ICD–10–CM) This approach resulted in the ● For each ICD–10–CM injury rather than ICD–9–CM to report medical basic structure of the 2016 proposed diagnosis code, consideration was information in administrative data (5). ICD–10–CM injury diagnosis matrix then given to where the equivalent In anticipation of this change, in 2016, shown in the Figure. Row labels ICD–9–CM code was placed in the the National Center for Health Statistics indicate the body region of injury and ICD–9–CM injury diagnosis matrix. (NCHS) and the National Center for column headings indicate the nature of General equivalence mappings Injury Prevention and Control (NCIPC) injury. There are six major body region (GEMs) were used to identify the published a proposed ICD–10–CM injury categories (Head and neck, Spine and equivalent ICD–9–CM code(s) for diagnosis matrix for presenting injury back, Torso, Extremities, Unclassifiable each ICD–10–CM code (8). GEMs data using ICD–10–CM nature-of-injury by body region, and Unspecified) that are a tool produced by NCHS (diagnosis) codes (6). are further subdivided into up to two and the Centers for Medicare & additional levels of body regions to Medicaid Services (CMS) to assist provide greater specificity. There are 15 in translating between different major nature-of-injury categories, 2 of versions of the clinical modifications which are further subdivided based on of ICD. For each ICD–10–CM injury the detailed information provided in the diagnosis code, the body region codes (i.e., Burns and corrosions, divided

Table A. International Classification of Diseases, 10th Revision, Clinical Modification nature-of-injury codes included in the 2016 proposed injury diagnosis matrix

ICD–10–CM nature-of-injury code Type of injury

All S codes ...... Anatomic injuries

T07–T34 ...... Foreign bodies, burns, corrosions, frostbite T36–T50 with a 6th character of 1, 2, 3, or 4 (exceptions: T36.9, T37.9, T39.9, T41.4, T42.7, T43.9, T45.9, T47.9, and T49.9, which are included if they have a 5th character of 1, 2, 3, or 4) ...... Drug poisoning (excludes adverse effects and underdosing) T51–T65 ...... Toxic effects of substances nonmedicinal as to source T66–T76 ...... Other and unspecified effects of external causes (radiation, heat, light, hypo/hyperthermia, asphyxiation, child/adult abuse, lightning, drowning, motion sickness, etc.) T79 ...... Certain early complications of trauma, not elsewhere classified

NOTE: ICD–10–CM is the International Classification of Diseases, 10th Revision, Clinical Modification. SOURCES: National Center for Health Statistics and National Center for Injury Prevention and Control. National Health Statistics Reports  Number 150  December 28, 2020 Page 3 … injury Unspecified Unspecified injury Other and tendons Injury to muscles muscles injury to Injury nerves Other specified Other specified and strains Sprains Sprains

Toxic Toxic effects

Poisoning

Other

causes external external effects of effects codes y

body orifice foreign foreign Effect of Effect entering entering

Corrosions

Nature of injuryNature e-of-injur Burns and corrosions

Burns ur

Crushing

injury or

contusion Superficial 0–CM nat 0–CM

Blood vessel

ICD–1 Amputation

Open wound

injury organ organ Internal

Dislocation

Fracture … neck Eye pelvis Face Face Neck Neck Other genitalia Buttock External Sacral or Sacral Sacral or Sacral Other head Lumbar VCI Pelvic girdle Pelvic Lumbar SCI Cervical VCI Cervical SCI Thoracic VCI Thoracic

coccygeal VCI coccygeal Thoracic SCI Thoracic coccygeal SCI coccygeal Pelvic organs Pelvic

Other head and Lower back and back Lower

nec CI) (V

(SCI) injur ain br ax) (thor

, and and , ace column Abdomen vis el unk tr Other

d d cor Spinal aumatic aumatic Chest

Other head, head, Other al ebr er

Body region of injuryBody region

nec and Head so or bac and Spine International Classification of Diseases, 10th Revision, Clinical Modification injurymatrix diagnosis Revision, 10th Classification of Diseases, International proposed the 2016 for framework Conceptual Figure. Page 4 National Health Statistics Reports  Number 150  December 28, 2020 … injury Unspecified Unspecified injury Other and tendons Injury to muscles muscles injury nerves Other specified Other specified Injury to and strains Sprains Sprains

Toxic Toxic effects Poisoning

Other causes codes y external external effects of effects body orifice

foreign foreign

Effect of Effect entering entering Nature of injuryNature e-of-injur

Burns and corrosions ur Crushing injury or

contusion Superficial 0–CM nat 0–CM

Blood vessel ICD–1 Amputation Open wound injury organ organ Internal … … … … … … … … Burns Corrosions … … … Fracture Dislocation … … Hip thigh ankle elbow Knee Other, Other, specified upper arm and fingers unspecified unspecified multiple, and multiple, Wrist, hand, Wrist,

Forearm and Forearm Shoulder and Foot and toes Foot Lower leg and Lower Upper leg and

Ankle and foot Arm, not further

egions r

emit xtr e Upper emit xtr e er Lo emwide st

Multiple body body Multiple

Body region of injuryBody region

ed Unspecifi emities Extr egion r body y b le ab Unclassifi … Category not applicable. … Category and Control. Injury Prevention for and National Center Health Statistics for National Center SOURCES: — Con. Clinical Modification injurymatrix diagnosis Revision, 10th Classification of Diseases, International proposed the 2016 for framework Conceptual Figure. National Health Statistics Reports  Number 150  December 28, 2020 Page 5

and nature-of-injury location of the updates the overall ICD–10–CM code set in the 2016 proposed injury diagnosis ICD–9–CM GEMs equivalent in (9). These updates have resulted in new matrix but were added to create the 2020 the ICD–9–CM injury diagnosis ICD–10–CM diagnosis codes that did final injury diagnosis matrix. Details on matrix was noted. Most codes not exist at the time the 2016 proposed each of these types of modification are showed agreement between the injury diagnosis matrix was developed. provided below. ICD–9–CM and ICD–10 injury This report highlights the adjustments diagnosis matrices in terms of made to the 2016 proposed ICD–10–CM Injury diagnosis codes that body region and nature-of-injury injury diagnosis matrix and presents the categories. However, for some codes, 2020 final ICD–10–CM injury diagnosis were relocated the ICD–9–CM GEMs equivalent matrix. Based on input from users of the was found in a different cell in the 2016 proposed ICD–10–CM injury ICD–9–CM injury diagnosis matrix diagnosis matrix, several codes were than the ICD–10 parent code in the Methods relocated to a different body-region-by- ICD–10 injury diagnosis matrix. Since publication of the proposed nature-of-injury cell of the matrix When this occurred, the GEMs ICD–10–CM injury diagnosis matrix in (Table I). In summary, these included: equivalent took precedence over January 2016, NCHS and NCIPC have ● Codes for subluxations and the ICD–10 parent code, and the received feedback from clinicians and ICD–10–CM code in the 2016 dislocations of the sternoclavicular researchers with recommendations to joint. In the 2016 proposed proposed ICD–10–CM injury improve the consistency and clinical diagnosis matrix was moved from ICD–10–CM injury diagnosis applicability of body-region-by-nature- matrix, these codes were placed the location of the parent code in of-injury categorization. Comments the ICD–10 injury diagnosis matrix in the body region of Torso/Chest were received from the Navy and Marine (thorax) for consistency with the to the comparable location of the Corps Public Health Center, the Army ICD–9–CM GEMs equivalent code ICD–9–CM injury diagnosis matrix Public Health Center, the Defense for morbidity. However, in the in the ICD–9–CM injury diagnosis Health Agency of the Military Health matrix. Thus, for some codes, the ICD–10 injury diagnosis matrix for System, the Agency for Healthcare mortality, these codes were included location of the ICD–10–CM code Research and Quality, several state in the 2016 proposed ICD–10–CM in the body region Extremities/ health departments, researchers, and Upper extremity. For consistency injury diagnosis matrix differed from an international consulting firm. that of the parent ICD–10 code in the with the ICD–10 injury diagnosis Additionally, subject matter experts from matrix and because injuries to the ICD–10 injury diagnosis matrix. NCHS, NCIPC, the Council of State and ● Given the greater detail provided in sternoclavicular joint could result Territorial Epidemiologists, and state in limitations in functioning of the the ICD–10–CM code description, and local health departments reviewed some codes previously assigned shoulder, a decision was made to code descriptions, coding guidelines, move the codes S43.201–S43.226 to less specific categories in the updates to the ICD–10–CM code set, ICD–9–CM or ICD–10 injury (subluxations and dislocations and other materials to identify possible of the sternoclavicular joint) and diagnosis matrices, such as needed changes to the 2016 proposed Unclassifiable by body region or S43.60–S43.62 and S23.420 (sprains ICD–10–CM injury diagnosis matrix. of the sternoclavicular joint) from Other specified injury, could be Consideration of the issues raised by placed in more specific cells in the the body region Torso/Chest (thorax) clinicians and researchers and from to Extremities/Upper extremity/ 2016 proposed ICD–10–CM injury the internal review resulted in several diagnosis matrix. Shoulder and upper arm. modifications to the 2016 proposed ● Codes for lacerations of muscle, ICD–10–CM injury diagnosis matrix fascia, and tendons. In the 2016 Purpose of this report to generate the final 2020 ICD–10–CM proposed ICD–10–CM injury injury diagnosis matrix. diagnosis matrix, these types of At the time the 2016 proposed injuries were assigned to the nature- ICD–10–CM injury diagnosis matrix of-injury category of Other specified was developed, ICD–10–CM coded Results injury/Injury to muscles and tendons. data were not available to evaluate The modifications to the 2016 Because these types of injuries the proposed code placements. As proposed ICD–10–CM injury diagnosis would most likely only result from ICD–10–CM coded administrative data matrix fall into two broad categories: an open wound, a decision was made became available, NCHS and NCIPC (a) relocations: injury diagnosis codes to move these codes to the nature-of- received input from stakeholders in the 2016 proposed injury diagnosis injury category of Open wound. regarding needed adjustments for some matrix that were relocated to a different ● Codes for traumatic rupture of of the code placements. Additionally, cell in the 2020 final injury diagnosis ligaments. In the 2016 proposed the ICD–10–CM Coordination and matrix, and (b) additions: new injury ICD–10–CM injury diagnosis Maintenance Committee annually diagnosis codes that were not included matrix, these types of injuries were Page 6 National Health Statistics Reports  Number 150  December 28, 2020

assigned to the nature-of-injury category of Other specified injury/ 1, 2016) and M97 (after October 1, category of Other specified injury/ Strains and sprains. 2016) are included in the updated Injury to muscles and tendons. ICD–10–CM surveillance case The codes that were relocated Because ligaments provide definition for injury hospitalizations. represent approximately 3% of the 9,000 supporting structure around a joint codes included in the 2016 proposed For consistency, the additional codes and do not involve muscles or injury diagnosis matrix. Table I provides included in the 2019 updated surveillance tendons, a decision was made to a list of all the codes that were relocated case definition for injury hospitalizations move these codes to the nature-of- to a different body-region-by-nature-of- were also added to the 2020 final injury category of Other specified injury cell in the final 2020 ICD–10–CM ICD–10–CM injury diagnosis matrix. injury/Strains and sprains. injury diagnosis matrix. Additionally, each year, the ● Codes for tear of the meniscus. In ICD–10–CM Coordination and the 2016 proposed ICD–10–CM Maintenance Committee updates the injury diagnosis matrix, these types Injury diagnosis codes that ICD–10–CM code set, coding guidelines, of injuries were assigned to the were added and associated materials (9). These nature-of-injury category of Other annual updates have resulted in several specified injury/Injury to muscles The 2016 proposed ICD–10–CM additions and deletions to the nature-of- and tendons. Because the meniscus injury diagnosis matrix included the injury codes in the ICD–10–CM code set is located within a joint, a tear of the ICD–10–CM codes identified in a since the 2016 proposed ICD–10–CM meniscus would not involve injury proposed surveillance case definition for injury diagnosis matrix was developed. to muscles and tendons but would injury hospitalizations and emergency To generate the 2020 final ICD–10–CM more likely involve sprain or strain department visits that was published in injury diagnosis matrix, approximately of ligaments and cartilage. For this 2017 (Table A) (7). In 2019, an updated 200 new injury codes were added to reason, a decision was made to move surveillance case definition for injury the 2016 proposed ICD–10–CM injury these codes to the nature-of-injury hospitalizations that included several diagnosis matrix. The new codes added to category of Other specified injury/ additional codes was published (Table B) the 2016 proposed ICD–10–CM matrix to Strains and sprains. (10). The additional codes in the updated create the 2020 final ICD–10–CM injury ● Codes for tear of articular cartilage. surveillance case definition included: diagnosis matrix are summarized in In the 2016 proposed ICD–10–CM ● O9A.2, O9A.3, O9A.4, and Table II. injury diagnosis matrix, these types O9A.5: Injury, poisoning and of injuries were assigned to the other consequences of external nature-of-injury category of Other causes complicating pregnancy and 2020 final ICD–10–CM injury specified injury/Injury to muscles childbirth. diagnosis matrix and tendons. Because the articular ● T84.04 and M97: Periprosthetic The changes noted above were used cartilage is located within a joint, fracture around an internal prosthetic to update the 2016 proposed ICD–10–CM a tear would not involve injury to joint. In the Federal Fiscal Year 2017 injury diagnosis matrix to create the muscles and tendons but would version of ICD–10–CM, effective 2020 final ICD–10–CM injury diagnosis more likely involve sprain or strain. October 1, 2016, T84.04 codes were matrix. More than 9,000 injury diagnosis A decision was made to move deleted and replaced by M97 codes codes are included in the final matrix. these codes to the nature-of-injury (11). Both T84.04 (before October

Table B. International Classification of Diseases, 10th Revision, Clinical Modification nature-of-injury codes included in the 2020 final injury diagnosis matrix

ICD–10–CM nature-of-injury code Type of injury

All S codes ...... Anatomic injuries

T07–T34 ...... Foreign bodies, burns, corrosions, frostbite T36–T50 with a 6th character of 1, 2, 3, or 4 (exceptions: T36.9, T37.9, T39.9, T41.4, T42.7, T43.9, T45.9, T47.9, and T49.9, which are included if they have a 5th character of 1, 2, 3, or 4) ...... Drug poisoning (excludes adverse effects and underdosing) T51–T65 ...... Toxic effects of substances nonmedicinal as to source T66–T76 ...... Other and unspecified effects of external causes (radiation, heat, light, hypo/hyperthermia, asphyxiation, child/adult abuse, lightning, drowning, motion sickness, etc.) T79 ...... Certain early complications of trauma, not elsewhere classified O9A.2-O9A.5 ...... Injury, poisoning and certain other consequences of external causes; and physical, sexual and psychological abuse complicating pregnancy, childbirth and the puerperium T84.041 ...... Periprosthetic fracture around internal prosthetic joint M971 ...... Periprosthetic fracture around internal prosthetic joint

1T84.04 was retired and replaced by M97 in the Federal Fiscal Year 2017 version of ICD–10–CM, which went into effect on October 1, 2016. NOTE: ICD–10–CM is the International Classification of Diseases, 10th Revision, Clinical Modification. SOURCES: National Center for Health Statistics and National Center for Injury Prevention and Control. National Health Statistics Reports  Number 150  December 28, 2020 Page 7

A spreadsheet showing the placement are some exceptions. These differences both in terms of the injury diagnosis of each individual injury diagnosis generally result from greater specificity codes and the corresponding injury code into a body-region-by-nature-of- or additional detail in the ICD–10–CM diagnosis matrices, trend analysis using injury cell in the matrix is available at code compared with the ICD–10 code, ICD–9–CM-coded data for some years the NCHS Injury Data and Resources, or from the clinical implications and and ICD–10–CM-coded data for other Tools and Frameworks website (https:// differences between morbidity and years is not recommended without www.cdc.gov/nchs/injury/injury_tools. mortality data. For example, while it is significant additional analyses and a htm) in the ICD–10–CM section under reasonable to assign S01, Open wound clear understanding of possible coding Injury Diagnosis Matrices. Because of of the head to the Head and neck/ issues that might contribute to the trends the complexities, nuances, and yearly Traumatic brain injury body region of observed. updates to the ICD–10–CM code set and the ICD–10 injury diagnosis matrix The purpose of the 2020 final injury diagnosis matrix, any analysis for mortality (because of how the code ICD–10–CM injury diagnosis matrix using the 2020 final ICD–10–CM injury is used in mortality data) (6), it is not is to group ICD–10–CM codes into diagnosis matrix should rely on the clinically justifiable to include it as a broad body-region and nature-of-injury spreadsheet and SAS formats available traumatic brain injury in the ICD–10–CM categories in a way that is consistent at the NCHS Injury Data and Resources injury diagnosis matrix. In the 2020 with previous ICD-based tools for public website to ensure that all injury diagnosis final ICD–10–CM injury diagnosis health surveillance of injury diagnoses. codes are included and that individual matrix, the S01 codes are assigned to Users of the matrix should recognize that, codes are appropriately grouped by body Head and neck/Other head, face, and despite the labels used for the body- region and nature of injury. neck/Other head. The differences in region and nature-of-injury categories, code placement in the ICD–10 matrix the code groups are not necessarily meant and the 2020 final ICD–10–CM injury to imply a “case definition.” For example, Discussion diagnosis matrix should be considered researchers who are interested in studying This report summarizes the when making comparisons between the pelvic fractures may need to develop modifications made to the 2016 proposed number of deaths identified using data a specific case definition that better ICD–10–CM injury diagnosis matrix, coded in ICD–10 and the number of meets their needs rather than simply based on feedback from clinicians, nonfatal injuries (e.g., hospitalizations or using the codes assigned to the Torso/ researchers, and other users, to create emergency department visits) identified Pelvis/Pelvic girdle/Fracture cell of the the 2020 final ICD–10–CM injury using data coded in ICD–10–CM for injury diagnosis matrix. In the 2020 final diagnosis matrix. Overall, only a small certain injury diagnoses. A spreadsheet ICD–10–CM injury diagnosis matrix, percentage of codes (approximately listing the approximately 685 codes for codes related to sacral and coccygeal 3%) were relocated to a different cell which the location of the ICD–10–CM fractures are included in the body region in the body-region-by-nature-of-injury code in the 2020 final ICD–10–CM of Spine and back/Vertebral column framework. Most of these relocations injury diagnosis matrix differs from injury (VCI)/Sacral and coccygeal injury involved reassignment of certain injuries where similar ICD–10 codes are located rather than in Torso/Pelvis/Pelvic girdle from the nature-of-injury category of in the ICD–10 matrix is available at the where other pelvic fractures are located. Other specified injury/Injury to muscle NCHS Injury Data and Resources, Tools Therefore, using only the codes in the and tendon to either Other specified and Frameworks website (https://www. Torso/Pelvis/Pelvic girdle/Fracture injury/Strain and sprain or to Other cdc.gov/nchs/injury/injury_tools.htm) cell of the matrix might not include all specified injury/Open wound. Only one in the ICD–10–CM section under Injury pelvic fractures of interest. Similarly, for set of codes, those for injuries to the Diagnosis Matrices. researchers interested in traumatic brain sternoclavicular joint, were relocated to a When analyzing both ICD–9–CM injury, there are differing opinions about different body region (from Torso/Chest and ICD–10–CM-coded morbidity data, whether the code S09.90, Unspecified [thorax] to Extremities/Upper extremity/ researchers should exercise caution injury of head should be used to identify Shoulder and upper arm). Additionally, when interpreting the results from any morbidity cases of traumatic brain injury approximately 200 new codes (i.e., trend analysis that crosses the transition (16). In the 2020 final ICD–10–CM ICD–10–CM codes that did not exist at from the use of ICD–9–CM to the injury diagnosis matrix, the code S09.90 the time the 2016 proposed ICD–10–CM use of ICD–10–CM that occurred on is assigned to Head and neck/Other injury diagnosis matrix was developed) October 1, 2015 (12). There are major head, face, and neck/Other head and not were added. differences between the ICD–9–CM to the body region of Head and neck/ Users should be aware that while and ICD–10–CM code sets and coding Traumatic brain injury. This is consistent the majority of ICD–10–CM codes in the guidelines that should be considered with the location of the GEMs-equivalent 2020 final ICD–10–CM injury diagnosis (4,5,13,14). Differences between ICD–9–CM code 959.01, Head injury matrix for morbidity are located in a ICD–9–CM and ICD–10–CM codes unspecified in the ICD–9–CM injury body-region-by-nature-of-injury cell that used for injury surveillance have been diagnosis matrix. Depending on the data is comparable with where related ICD–10 described in detail elsewhere (15). set used and the purpose of the research codes are located in the ICD–10 injury Because of the substantial differences project, a researcher might opt to include diagnosis matrix for mortality, there between ICD–9–CM and ICD–10–CM, S09.90 or other codes in addition to Page 8 National Health Statistics Reports  Number 150  December 28, 2020 those in the Head and neck/Traumatic Conclusion 7. Hedegaard HB, Johnson RL, brain injury body region of the 2020 final Ballesteros MF. Proposed ICD–10–CM injury diagnosis matrix The 2020 final ICD–10–CM injury ICD–10–CM surveillance case when developing a study case definition diagnosis matrix provides standard definitions for injury hospitalizations for traumatic brain injury morbidity. In groupings for reporting injuries by and emergency department visits. general, users should consider the code body region and nature of injury when National Health Statistics Reports; no groupings in the matrix as a potential analyzing ICD–10–CM-coded data. Use 100. Hyattsville, MD: National Center starting place in the development of a of this tool by injury epidemiologists and for Health Statistics. 2017. Available case definition, then modify as needed researchers will promote consistency, from: https://www.cdc.gov/nchs/data/ based on the purpose of the research allowing comparison across different nhsr/NHSR100.pdf. study and the sensitivity and specificity study populations and over time. 8. Centers for Medicare & Medicaid of the proposed case definition in Services. General equivalence identifying cases of interest in the data set mappings: ICD–9–CM to and from being analyzed. References ICD–10–CM and ICD–10–PCS. Finally, while the 2020 final 1. Barell V, Aharonson-Daniel L, 2009. Available from: https://www. ICD–10–CM injury diagnosis matrix Fingerhut LA, Mackenzie EJ, Ziv A, cms.gov/Medicare/Coding/ICD10/ was designed to be consistent with Boyko V, et al. An introduction to the Downloads/ICD-10_GEM_fact_sheet. other tools developed by NCHS and Barell body region by nature of injury pdf. NCIPC, it is important to recognize diagnosis matrix. Inj Prev 8(2):91–6. 9. Centers for Medicare & Medicaid that other categorization schemas have 2002. Available from: https:// Services, National Center for Health been developed. One such schema is the injuryprevention.bmj.com/content/ Statistics. ICD–10 Coordination Taxonomy of Injuries for Public Health injuryprev/8/2/91.full.pdf. and Maintenance Committee. Monitoring and Reporting developed 2. Fingerhut LA, Warner M. The Available from: https://www. by the Army Public Health Center ICD–10 injury mortality diagnosis cms.gov/Medicare/Coding/ (17). Users should recognize that other matrix. 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NCHS Injury Data and Resources, Hyattsville, MD. 2020. Available 12. Inscore MC, Gonzales KR, Rennix Tools and Frameworks website from: https://www.cdc.gov/nchs/icd/ CP, Jones BH. The effect of (https://www.cdc.gov/nchs/injury/ icd10cm.htm. transitioning to ICD–10–CM on injury_tools.htm) will provide the 6. Hedegaard H, Johnson RL, Warner acute injury surveillance of active latest version of the ICD–10–CM M, Chen L-H, Annest JL. Proposed duty service members. Inj Epidemiol injury diagnosis matrix. framework for presenting injury data 5(1):32. 2018. Available from: ● The performance of the 2020 final using the International Classification https://link.springer.com/ ICD–10–CM injury diagnosis matrix of Diseases, 10th Revision, Clinical article/10.1186/s40621-018-0162-y. should continue to be monitored and Modification diagnosis codes. 13. Centers for Medicare & Medicaid the matrix adjusted, if needed. National Health Statistics Reports; no 89. Hyattsville, MD: National Services, National Center for Health Center for Health Statistics. 2016. Statistics. ICD–9–CM official Available from: https://www.cdc.gov/ guidelines for coding and reporting. nchs/data/nhsr/nhsr089.pdf. National Health Statistics Reports  Number 150  December 28, 2020 Page 9

2011. Available from: https://www. cdc.gov/nchs/data/icd/icd9cm_ guidelines_2011.pdf. 14. Centers for Medicare & Medicaid Services, National Center for Health Statistics. ICD–10–CM official guidelines for coding and reporting. 2016. Available from: https://www.cdc.gov/nchs/data/ icd/10cmguidelines_2016_final.pdf. 15. Injury Surveillance Workgroup 9. The transition from ICD–9–CM to ICD–10–CM: Guidance for analysis and reporting of injuries by mechanism and intent. Safe States Alliance. Atlanta, GA. 2016. Available from: https://cdn.ymaws. com/www.safestates.org/resource/ resmgr/isw9/ISW9_FINAL_Report. pdf. 16. Chan V, Thurairajah P, Colantonio A. Defining pediatric traumatic brain injury using International Classification of Diseases Version 10 Codes: A systematic review. BMC Neurol 15:7. 2015. Available from: https://bmcneurol.biomedcentral.com/ track/pdf/10.1186/s12883-015- 0259-7. 17. Hauschild V, Hauret K, Richardson M, Jones BH, Lee T. A taxonomy of injuries for public health monitoring and reporting. Public Health Information Paper (PHIP) No. 12–01–0717. 2017. Page 10 National Health Statistics Reports  Number 150  December 28, 2020

Technical Notes

Modifications made to the 2016 proposed International Classification of Diseases, 10th Revision, Clinical Modification (ICD–10–CM) injury diagnosis matrix to create the 2020 final ICD–10–CM injury diagnosis matrix, as of October 1, 2020 National Health Statistics Reports  Number 150  December 28, 2020 Page 11 2020 final matrix Nature-of-injury category in and strains and strains Dislocation Dislocation Dislocation Dislocation Dislocation Dislocation Dislocation Dislocation Dislocation Dislocation Dislocation Dislocation Open wound Fracture Other specified injury/Sprains Other specified Open wound Other specified injury/Sprains Other specified Open wound Open wound Open wound Open wound Open wound Dislocation Dislocation Dislocation Open wound 2020 final matrix Body region category in Body region Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm and neck/Other head and neck/Other (VCI)/Cervical VCI (VCI)/Cervical (VCI)/Cervical VCI (VCI)/Cervical and neck/Neck and neck/Neck Shoulder and upper arm pelvis Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm pelvis Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Head and neck/Other head, face, head, face, Head and neck/Other Spine and back/Vertebral column Spine and back/Vertebral Spine and back/Vertebral column Spine and back/Vertebral Head and neck/Other head, face, head, face, Head and neck/Other Extremities/Upper extremity/ Extremities/Upper Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest Torso/Abdomen Torso/Chest (thorax) Torso/Chest Torso/Pelvis/Lower back and back Torso/Pelvis/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Torso/Pelvis/Lower back and back Torso/Pelvis/Lower 2016 proposed matrix proposed 2016 Nature-of-injury category in and tendons and strains and tendons and strains and tendons and tendons and tendons and tendons and tendons and tendons Dislocation Dislocation Dislocation Dislocation Dislocation Dislocation Dislocation Other specified injury/Muscles Other specified Dislocation Dislocation Dislocation Dislocation Dislocation Fracture Other specified injury/Sprains Other specified Other specified injury/Muscles Other specified Other specified injury/Sprains Other specified Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Dislocation Dislocation Dislocation 2016 proposed matrix proposed 2016 Body region category in Body region and neck/Other head and neck/Other and neck/Neck and neck/Neck and neck/Neck and neck/Neck and neck/Neck pelvis pelvis Head and neck/Other head, face, head, face, Head and neck/Other Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Head and neck/Other head, face, head, face, Head and neck/Other Head and neck/Other head, face, head, face, Head and neck/Other Head and neck/Other head, face, head, face, Head and neck/Other Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest Torso/Abdomen and back Torso/Pelvis/Lower Torso/Chest (thorax) Torso/Chest Torso/Pelvis/Lower back and back Torso/Pelvis/Lower Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Description thorax Laceration of muscle and tendon of head and tendon of muscle Laceration Anterior dislocation of right sternoclavicular joint dislocation of rightAnterior sternoclavicular Anterior subluxation of unspecified sternoclavicular joint sternoclavicular of unspecified subluxation Anterior Anterior subluxation of left sternoclavicular joint sternoclavicular of left subluxation Anterior Anterior subluxation of right sternoclavicular joint of right sternoclavicular subluxation Anterior Unspecified dislocation of unspecified sternoclavicular joint dislocation of unspecified Unspecified Unspecified dislocation of left sternoclavicular joint sternoclavicular dislocation of left Unspecified Posterior subluxation of unspecified sternoclavicular joint sternoclavicular of unspecified subluxation Posterior Posterior subluxation of left sternoclavicular joint sternoclavicular of left subluxation Posterior Posterior subluxation of right sternoclavicular joint of right sternoclavicular subluxation Posterior Anterior dislocation of unspecified sternoclavicular joint sternoclavicular dislocation of unspecified Anterior Anterior dislocation of left sternoclavicular joint sternoclavicular dislocation of left Anterior Fracture of other parts of neck Fracture Strain of muscle, fascia and tendon at neck level at neck and tendon fascia of muscle, Strain Laceration of muscle, fascia and tendon at neck level at neck and tendon fascia of muscle, Laceration Sprain of sternoclavicular (joint) (ligament) of sternoclavicular Sprain Laceration of muscle and tendon of back wall of thorax wall of back and tendon of muscle Laceration wall of of unspecified and tendon of muscle Laceration of abdomen and tendon fascia of muscle, Laceration back of lower and tendon fascia of muscle, Laceration Laceration of muscle and tendon of front wall of thorax wall of front and tendon of muscle Laceration Laceration of muscle, fascia and tendon of pelvis and tendon fascia of muscle, Laceration Unspecified dislocation of right sternoclavicular joint dislocation of right sternoclavicular Unspecified Unspecified subluxation of unspecified sternoclavicular joint of unspecified subluxation Unspecified Unspecified subluxation of left sternoclavicular joint sternoclavicular of left subluxation Unspecified Unspecified subluxation of right sternoclavicular joint of right sternoclavicular subluxation Unspecified Code S09.12X S43.215 S43.214 S43.213 S43.212 S43.211 S43.206 S43.205 (ICD–10–CM) injury diagnosis codes in the 2020 final ICD–10–CM injury codes in the 2020 final ICD–10–CM injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, Changes in the location of International I. Table 2020 1, as of October matrix, diagnosis S43.223 S43.222 S43.221 S43.216 S12.8XX S16.1XX S16.2XX S23.420 S29.022 S29.029 S39.021 S39.022 S29.021 S39.023 S43.204 S43.203 S43.202 S43.201 Page 12 National Health Statistics Reports  Number 150  December 28, 2020 final matrix Nature-of-injury category in 2020 and strains and strains and strains and strains and strains and strains Dislocation Dislocation Dislocation Open wound Open wound Other specified injury/Sprains Other specified Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Other specified injury/Sprains Other specified Other specified injury/Sprains Other specified Other specified injury/Sprains Other specified Other specified injury/Sprains Other specified Other specified injury/Sprains Other specified 2020 final matrix Body region category in Body region Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Forearm and elbow Forearm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper 2016 proposed matrix proposed 2016 Nature-of-injury category in and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons Dislocation Dislocation Dislocation Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified 2016 proposed matrix proposed 2016 Body region category in Body region Shoulder and upper arm Shoulder and upper arm Forearm and elbow Forearm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Shoulder and upper arm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Extremities/Upper extremity/ Extremities/Upper Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Torso/Chest (thorax) Torso/Chest Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Description right shoulder left shoulder left unspecified arm unspecified unspecified shoulder unspecified and upper arm level, right armand upper arm level, biceps, right biceps, arm and upper arm level, left arm left and upper arm level, biceps, left arm left biceps, and upper arm level, unspecified arm unspecified and upper arm level, biceps, unspecified arm unspecified biceps, shoulder and upper arm level, right armshoulder and upper arm level, biceps, right biceps, arm shoulder and upper arm level, left arm left shoulder and upper arm level, biceps, left arm left biceps, shoulder and upper arm level, unspecified arm unspecified shoulder and upper arm level, biceps, unspecified arm unspecified biceps, Laceration of muscle(s) and tendon(s) of the rotator cuff of cuff of the rotator and tendon(s) of muscle(s) Laceration Posterior dislocation of unspecified sternoclavicular joint sternoclavicular dislocation of unspecified Posterior Posterior dislocation of left sternoclavicular joint sternoclavicular dislocation of left Posterior Posterior dislocation of right sternoclavicular joint dislocation of right sternoclavicular Posterior Traumatic rupture of left ulnar collateral ligament ulnar collateral of left rupture Traumatic Laceration of muscle, fascia and tendon of triceps, left arm left of triceps, and tendon fascia of muscle, Laceration Laceration of muscle(s) and tendon(s) of the rotator cuff of cuff of the rotator and tendon(s) of muscle(s) Laceration Laceration of muscle, fascia and tendon of triceps, of triceps, and tendon fascia of muscle, Laceration Laceration of muscle(s) and tendon(s) of the rotator cuff of cuff of the rotator and tendon(s) of muscle(s) Laceration Laceration of other muscles, fascia and tendons at shoulder and tendons fascia of other muscles, Laceration Laceration of muscle, fascia and tendon of long head and tendon fascia of muscle, Laceration Laceration of other muscles, fascia and tendons at shoulder and tendons fascia of other muscles, Laceration Laceration of muscle, fascia and tendon of long head and tendon fascia of muscle, Laceration Laceration of other muscles, fascia and tendons at shoulder and tendons fascia of other muscles, Laceration Laceration of muscle, fascia and tendon of long head and tendon fascia of muscle, Laceration Laceration of unspecified muscle, fascia and tendon at fascia and muscle, of unspecified Laceration Laceration of muscle, fascia and tendon of other parts and tendon of fascia of muscle, Laceration Laceration of unspecified muscle, fascia and tendon at fascia and muscle, of unspecified Laceration Laceration of muscle, fascia and tendon of other parts and tendon of fascia of muscle, Laceration Laceration of unspecified muscle, fascia and tendon at fascia and muscle, of unspecified Laceration Laceration of muscle, fascia and tendon of other parts and tendon of fascia of muscle, Laceration Laceration of muscle, fascia and tendon of triceps, right of triceps, arm and tendon fascia of muscle, Laceration Traumatic rupture of unspecified radial collateral ligament radial collateral of unspecified rupture Traumatic Traumatic rupture of right radial collateral ligament of right collateral rupture radial Traumatic Traumatic rupture of left radial collateral ligament collateral radial of left rupture Traumatic Traumatic rupture of unspecified ulnar collateral ligament ulnar collateral of unspecified rupture Traumatic Traumatic rupture of right ulnar collateral ligament of right rupture ulnar collateral Traumatic Code S46.021 S43.226 S43.225 S43.224 S53.32X (ICD–10–CM) injury diagnosis codes in the 2020 final ICD–10–CM injury codes in the 2020 final ICD–10–CM injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, Changes in the location of International I. Table 2020 — Con. 1, as of October matrix, diagnosis S46.322 S46.022 S46.329 S46.029 S46.821 S46.121 S46.822 S46.122 S46.829 S46.129 S46.921 S46.221 S46.922 S46.222 S46.929 S46.229 S53.20X S46.321 S53.21X S53.22X S53.30X S53.31X National Health Statistics Reports  Number 150  December 28, 2020 Page 13 final matrix Nature-of-injury category in 2020 Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound 2020 final matrix Body region category in Body region Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper 2016 proposed matrix proposed 2016 Nature-of-injury category in and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified 2016 proposed matrix proposed 2016 Body region category in Body region Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Forearm and elbow Forearm Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Description at forearm level at forearm finger at forearm level finger at forearm level, right arm level, forearm at forearm level at forearm forearm level, left arm left level, forearm thumb at forearm level thumb at forearm forearm level, unspecified arm unspecified level, forearm finger at forearm level finger at tendons of right thumb at forearm level of right thumb at forearm tendons finger at forearm level finger at tendons of left thumb at forearm level thumb at forearm of left tendons finger at forearm level finger at tendons of unspecified thumb at forearm level thumb at of unspecified tendons finger at forearm level finger at index finger at forearm level finger at index finger at forearm level finger at index finger at forearm level finger at index finger at forearm level finger at middle finger at forearm level middle finger at finger at forearm level finger at finger at forearm level finger at middle finger at forearm level middle finger at finger at forearm level finger at ring finger at forearm level ring finger at finger at forearm level finger at little finger at forearm level finger at little Laceration of flexor muscle, fascia and tendon of right thumb fascia and muscle, of flexor Laceration Laceration of extensor muscle, fascia and tendon of left little little of left and tendon fascia muscle, of extensor Laceration Laceration of other flexor muscle, fascia and tendon at fascia and muscle, of other flexor Laceration Laceration of flexor muscle, fascia and tendon of left thumb tendon of left fascia and muscle, of flexor Laceration Laceration of other flexor muscle, fascia and tendon at fascia and muscle, of other flexor Laceration Laceration of flexor muscle, fascia and tendon of unspecified tendon of unspecified fascia and muscle, of flexor Laceration Laceration of other flexor muscle, fascia and tendon at fascia and muscle, of other flexor Laceration Laceration of flexor muscle, fascia and tendon of right index tendon of right index fascia and muscle, of flexor Laceration Laceration of extensor or abductor muscles, fascia and fascia muscles, or abductor of extensor Laceration Laceration of flexor muscle, fascia and tendon of left index index tendon of left fascia and muscle, of flexor Laceration Laceration of extensor or abductor muscles, fascia and fascia muscles, or abductor of extensor Laceration Laceration of flexor muscle, fascia and tendon of right middle fascia and muscle, of flexor Laceration Laceration of extensor or abductor muscles, fascia and fascia muscles, or abductor of extensor Laceration Laceration of flexor muscle, fascia and tendon of left middle tendon of left fascia and muscle, of flexor Laceration Laceration of extensor muscle, fascia and tendon of right and tendon fascia muscle, of extensor Laceration Laceration of flexor muscle, fascia and tendon of right fascia and ring muscle, of flexor Laceration Laceration of extensor muscle, fascia and tendon of left of left and tendon fascia muscle, of extensor Laceration Laceration of flexor muscle, fascia and tendon of left ring tendon of left fascia and muscle, of flexor Laceration Laceration of extensor muscle, fascia and tendon of right and tendon fascia muscle, of extensor Laceration Laceration of flexor muscle, fascia and tendon of right little tendon of right little fascia and muscle, of flexor Laceration Laceration of flexor muscle, fascia and tendon of left little little tendon of left fascia and muscle, of flexor Laceration Laceration of extensor muscle, fascia and tendon of left of left and tendon fascia muscle, of extensor Laceration Laceration of flexor muscle, fascia and tendon of unspecified tendon of unspecified fascia and muscle, of flexor Laceration Laceration of extensor muscle, fascia and tendon of right and tendon fascia muscle, of extensor Laceration Laceration of extensor muscle, fascia and tendon of left ring of left and tendon fascia muscle, of extensor Laceration Laceration of extensor muscle, fascia and tendon of right and tendon fascia muscle, of extensor Laceration Code S56.021 (ICD–10–CM) injury diagnosis codes in the 2020 final ICD–10–CM injury codes in the 2020 final ICD–10–CM injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, Changes in the location of International I. Table 2020 — Con. 1, as of October matrix, diagnosis S56.428 S56.221 S56.022 S56.222 S56.029 S56.229 S56.121 S56.321 S56.122 S56.322 S56.123 S56.329 S56.124 S56.421 S56.125 S56.422 S56.126 S56.423 S56.127 S56.424 S56.128 S56.129 S56.425 S56.426 S56.427 Page 14 National Health Statistics Reports  Number 150  December 28, 2020 final matrix Nature-of-injury category in 2020 sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Open wound Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Open wound Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Open wound Other specified injury/Strains and Other specified Open wound Other specified injury/Strains and Other specified Open wound Other specified injury/Strains and Other specified Open wound Other specified injury/Strains and Other specified Open wound Other specified injury/Strains and Other specified Open wound Other specified injury/Strains and Other specified Open wound Open wound injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified 2020 final matrix Body region category in Body region Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Forearm and elbow Forearm hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper 2016 proposed matrix proposed 2016 Nature-of-injury category in and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified 2016 proposed matrix proposed 2016 Body region category in Body region Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Wrist, hand, and fingers Wrist, Forearm and elbow Forearm Forearm and elbow Forearm hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Description unspecified finger at forearm level forearm finger at unspecified finger at metacarpophalangeal and interphalangeal joint wrist forearm level, right arm level, forearm at metacarpophalangeal and interphalangeal joint forearm level, left arm left level, forearm forearm level, unspecified arm unspecified level, forearm level, right arm level, level, left arm left level, level, unspecified arm unspecified level, forearm level, right arm level, forearm forearm level, left arm left level, forearm forearm level, unspecified arm unspecified level, forearm ligament Laceration of extensor muscle, fascia and tendon of and tendon fascia muscle, of extensor Laceration Traumatic rupture of unspecified ligament of right index of right index ligament of unspecified rupture Traumatic Traumatic rupture of unspecified ligament of unspecified of unspecified ligament of unspecified rupture Traumatic Laceration of other extensor muscle, fascia and tendon at and tendon fascia muscle, of other extensor Laceration Traumatic rupture of unspecified ligament of left index finger index of left ligament of unspecified rupture Traumatic Traumatic rupture of collateral ligament of right wrist ligament of collateral rupture Traumatic Laceration of other extensor muscle, fascia and tendon at and tendon fascia muscle, of other extensor Laceration Traumatic rupture of collateral ligament of left wrist of left ligament of collateral rupture Traumatic Laceration of other extensor muscle, fascia and tendon at and tendon fascia muscle, of other extensor Laceration Traumatic rupture of collateral ligament of unspecified wrist of unspecified ligament of collateral rupture Traumatic Laceration of other muscles, fascia and tendons at forearm at forearm and tendons fascia of other muscles, Laceration Traumatic rupture of right rupture radiocarpal ligament Traumatic Laceration of other muscles, fascia and tendons at forearm at forearm and tendons fascia of other muscles, Laceration Traumatic rupture of left radiocarpal ligament of left rupture Traumatic Laceration of other muscles, fascia and tendons at forearm at forearm and tendons fascia of other muscles, Laceration Traumatic rupture of unspecified radiocarpal ligament of unspecified rupture Traumatic Laceration of unspecified muscles, fascia and tendons at fascia and muscles, of unspecified Laceration Traumatic rupture of right rupture ulnocarpal (palmar) ligament Traumatic Laceration of unspecified muscles, fascia and tendons at fascia and muscles, of unspecified Laceration Laceration of unspecified muscles, fascia and tendons at fascia and muscles, of unspecified Laceration ulnocarpal (palmar) ligament of left rupture Traumatic Traumatic rupture of unspecified ligament of right wrist ligament of unspecified rupture Traumatic Traumatic rupture of unspecified ulnocarpal (palmar) of unspecified rupture Traumatic Traumatic rupture of unspecified ligament of left wrist of left ligament of unspecified rupture Traumatic Traumatic rupture of other ligament of right wrist of other ligament rupture Traumatic Traumatic rupture of other ligament of left wrist of left of other ligament rupture Traumatic Traumatic rupture of other ligament of unspecified wrist of unspecified of other ligament rupture Traumatic Code S56.429 (ICD–10–CM) injury diagnosis codes in the 2020 final ICD–10–CM injury codes in the 2020 final ICD–10–CM injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, Changes in the location of International I. Table 2020 — Con. 1, as of October matrix, diagnosis S63.400 S63.309 S56.521 S63.401 S63.311 S56.522 S63.312 S56.529 S63.319 S56.821 S63.321 S56.822 S63.322 S56.829 S63.329 S56.921 S63.331 S56.922 S56.929 S63.332 S63.301 S63.339 S63.302 S63.391 S63.392 S63.399 National Health Statistics Reports  Number 150  December 28, 2020 Page 15 final matrix Nature-of-injury category in 2020 sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified 2020 final matrix Body region category in Body region Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper 2016 proposed matrix proposed 2016 Nature-of-injury category in and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified 2016 proposed matrix proposed 2016 Body region category in Body region Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Description finger at metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint at metacarpophalangeal and interphalangeal joint at metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint at metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint at metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint finger at metacarpophalangeal and interphalangeal joint at metacarpophalangeal and interphalangeal joint at metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint at metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint Traumatic rupture of unspecified ligament of right middle ligament of unspecified rupture Traumatic Traumatic rupture of palmar ligament of left ring finger at of left of palmar ligament rupture Traumatic Traumatic rupture of unspecified ligament of left middle finger of left ligament of unspecified rupture Traumatic Traumatic rupture of collateral ligament of left middle finger of left ligament of collateral rupture Traumatic Traumatic rupture of palmar ligament of right little finger at of right little of palmar ligament rupture Traumatic Traumatic rupture of unspecified ligament of right ligament ring finger of unspecified rupture Traumatic Traumatic rupture of collateral ligament of right ring ligament finger at of collateral rupture Traumatic Traumatic rupture of palmar ligament of left little finger at little of left of palmar ligament rupture Traumatic Traumatic rupture of unspecified ligament of left ring finger at of left ligament of unspecified rupture Traumatic Traumatic rupture of collateral ligament of left ring finger at of left ligament of collateral rupture Traumatic Traumatic rupture of palmar ligament of other finger at of palmar ligament rupture Traumatic Traumatic rupture of unspecified ligament of right little finger of right little ligament of unspecified rupture Traumatic Traumatic rupture of collateral ligament of right little finger at of right little ligament of collateral rupture Traumatic Traumatic rupture of unspecified ligament of left little finger at little of left ligament of unspecified rupture Traumatic Traumatic rupture of collateral ligament of left little finger at little of left ligament of collateral rupture Traumatic Traumatic rupture of unspecified ligament of other finger at ligament of unspecified rupture Traumatic Traumatic rupture of collateral ligament of other finger at ligament of collateral rupture Traumatic Traumatic rupture of unspecified ligament of unspecified of unspecified ligament of unspecified rupture Traumatic Traumatic rupture of collateral ligament of unspecified finger of unspecified ligament of collateral rupture Traumatic Traumatic rupture of collateral ligament of right index finger of right index ligament of collateral rupture Traumatic Traumatic rupture of palmar ligament of right index finger at of right index of palmar ligament rupture Traumatic Traumatic rupture of collateral ligament of left index finger at index of left ligament of collateral rupture Traumatic Traumatic rupture of palmar ligament of left index finger at index of left of palmar ligament rupture Traumatic Traumatic rupture of collateral ligament of right middle finger ligament of collateral rupture Traumatic Traumatic rupture of palmar ligament of right middle finger at of palmar ligament rupture Traumatic Traumatic rupture of palmar ligament of left middle finger at of left of palmar ligament rupture Traumatic Traumatic rupture of palmar ligament of right ring of palmar ligament rupture finger at Traumatic Code S63.402 (ICD–10–CM) injury diagnosis codes in the 2020 final ICD–10–CM injury codes in the 2020 final ICD–10–CM injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, Changes in the location of International I. Table 2020 — Con. 1, as of October matrix, diagnosis S63.425 S63.403 S63.413 S63.426 S63.404 S63.414 S63.427 S63.405 S63.415 S63.428 S63.406 S63.416 S63.407 S63.417 S63.408 S63.418 S63.409 S63.419 S63.410 S63.420 S63.411 S63.421 S63.412 S63.422 S63.423 S63.424 Page 16 National Health Statistics Reports  Number 150  December 28, 2020 final matrix Nature-of-injury category in 2020 sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains sprains Open wound Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Open wound Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Open wound Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Open wound Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Open wound Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Other specified injury/Strains and Other specified Open wound 2020 final matrix Body region category in Body region Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper 2016 proposed matrix proposed 2016 Nature-of-injury category in and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified 2016 proposed matrix proposed 2016 Body region category in Body region Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Description metacarpophalangeal and interphalangeal joint unspecified thumb at wrist and hand level unspecified metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint finger at wrist and hand level metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint finger at wrist and hand level metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint finger at wrist and hand level metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint metacarpophalangeal and interphalangeal joint thumb at wrist and hand level thumb at wrist and hand level Traumatic rupture of palmar ligament of unspecified finger at of unspecified of palmar ligament rupture Traumatic Laceration of long flexor muscle, fascia and tendon of fascia and muscle, of long flexor Laceration Traumatic rupture of volar plate of right index finger at of right index plate of volar rupture Traumatic Traumatic rupture of other ligament of right index finger at of right index of other ligament rupture Traumatic Laceration of flexor muscle, fascia and tendon of right index tendon of right index fascia and muscle, of flexor Laceration Traumatic rupture of volar plate of left index finger at index of left plate of volar rupture Traumatic Traumatic rupture of other ligament of left index finger at index of left of other ligament rupture Traumatic Laceration of flexor muscle, fascia and tendon of left index index tendon of left fascia and muscle, of flexor Laceration Traumatic rupture of volar plate of right middle finger at plate of volar rupture Traumatic Traumatic rupture of other ligament of right middle finger at of other ligament rupture Traumatic Laceration of flexor muscle, fascia and tendon of right middle fascia and muscle, of flexor Laceration Traumatic rupture of volar plate of left middle finger at of left plate of volar rupture Traumatic Traumatic rupture of other ligament of left middle finger at of left of other ligament rupture Traumatic Traumatic rupture of volar plate of right ring plate finger at of volar rupture Traumatic Traumatic rupture of other ligament of right ring of other ligament rupture finger at Traumatic Traumatic rupture of volar plate of left ring finger at of left plate of volar rupture Traumatic Traumatic rupture of other ligament of left ring finger at of left of other ligament rupture Traumatic Traumatic rupture of volar plate of right little finger at of right little plate of volar rupture Traumatic Traumatic rupture of other ligament of right little finger at of right little of other ligament rupture Traumatic Traumatic rupture of volar plate of left little finger at little of left plate of volar rupture Traumatic Traumatic rupture of other ligament of left little finger at little of left of other ligament rupture Traumatic Traumatic rupture of volar plate of other finger at plate of volar rupture Traumatic Traumatic rupture of other ligament of other finger at of other ligament rupture Traumatic Traumatic rupture of volar plate of unspecified finger at of unspecified plate of volar rupture Traumatic Traumatic rupture of other ligament of unspecified finger at of unspecified of other ligament rupture Traumatic Laceration of long flexor muscle, fascia and tendon of right fascia and muscle, of long flexor Laceration Laceration of long flexor muscle, fascia and tendon of left tendon of left fascia and muscle, of long flexor Laceration Code S63.429 (ICD–10–CM) injury diagnosis codes in the 2020 final ICD–10–CM injury codes in the 2020 final ICD–10–CM injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, Changes in the location of International I. Table 2020 — Con. 1, as of October matrix, diagnosis S66.029 S63.430 S63.490 S66.120 S63.431 S63.491 S66.121 S63.432 S63.492 S66.122 S63.433 S63.493 S63.434 S63.494 S63.435 S63.495 S63.436 S63.496 S63.437 S63.497 S63.438 S63.498 S63.439 S63.499 S66.021 S66.022 National Health Statistics Reports  Number 150  December 28, 2020 Page 17 final matrix Nature-of-injury category in 2020 Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound 2020 final matrix Body region category in Body region Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper 2016 proposed matrix proposed 2016 Nature-of-injury category in and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified 2016 proposed matrix proposed 2016 Body region category in Body region Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Description finger at wrist and hand level middle finger at wrist and hand level middle finger at wrist and hand level finger at wrist and hand level middle finger at wrist and hand level middle finger at wrist and hand level finger at wrist and hand level ring finger at wrist and hand level finger at wrist and hand level finger at wrist and hand level finger at wrist and hand level little finger at wrist and hand level little at wrist and hand level finger at wrist and hand level finger at wrist and hand level finger at wrist and hand level thumb at wrist and hand level unspecified finger at wrist and hand level finger at wrist and hand unspecified thumb at wrist and hand level thumb at wrist and hand level unspecified thumb at wrist and hand level unspecified index finger at wrist and hand level index thumb at wrist and hand level index finger at wrist and hand level index unspecified thumb at wrist and hand level unspecified index finger at wrist and hand level index finger at wrist and hand level Laceration of flexor muscle, fascia and tendon of left middle tendon of left fascia and muscle, of flexor Laceration Laceration of intrinsic muscle, fascia and tendon of right and tendon fascia of intrinsicLaceration muscle, Laceration of extensor muscle, fascia and tendon of right and tendon fascia muscle, of extensor Laceration Laceration of flexor muscle, fascia and tendon of right fascia and ring muscle, of flexor Laceration Laceration of intrinsic muscle, fascia and tendon of left of left and tendon fascia of intrinsicLaceration muscle, Laceration of extensor muscle, fascia and tendon of left of left and tendon fascia muscle, of extensor Laceration Laceration of flexor muscle, fascia and tendon of left ring tendon of left fascia and muscle, of flexor Laceration Laceration of extensor muscle, fascia and tendon of right and tendon fascia muscle, of extensor Laceration Laceration of flexor muscle, fascia and tendon of right little tendon of right little fascia and muscle, of flexor Laceration Laceration of extensor muscle, fascia and tendon of left ring of left and tendon fascia muscle, of extensor Laceration Laceration of flexor muscle, fascia and tendon of left little little tendon of left fascia and muscle, of flexor Laceration Laceration of extensor muscle, fascia and tendon of right and tendon fascia muscle, of extensor Laceration Laceration of flexor muscle, fascia and tendon of other finger fascia and muscle, of flexor Laceration Laceration of extensor muscle, fascia and tendon of left little little of left and tendon fascia muscle, of extensor Laceration Laceration of flexor muscle, fascia and tendon of unspecified tendon of unspecified fascia and muscle, of flexor Laceration Laceration of extensor muscle, fascia and tendon of other and tendon fascia muscle, of extensor Laceration Laceration of extensor muscle, fascia and tendon of right and tendon fascia muscle, of extensor Laceration Laceration of extensor muscle, fascia and tendon of and tendon fascia muscle, of extensor Laceration Laceration of extensor muscle, fascia and tendon of left of left and tendon fascia muscle, of extensor Laceration Laceration of intrinsic muscle, fascia and tendon of right and tendon fascia of intrinsicLaceration muscle, Laceration of extensor muscle, fascia and tendon of and tendon fascia muscle, of extensor Laceration Laceration of extensor muscle, fascia and tendon of right and tendon fascia muscle, of extensor Laceration Laceration of intrinsic muscle, fascia and tendon of left of left and tendon fascia of intrinsicLaceration muscle, Laceration of extensor muscle, fascia and tendon of left of left and tendon fascia muscle, of extensor Laceration Laceration of intrinsic muscle, fascia and tendon of and tendon fascia of intrinsicLaceration muscle, Laceration of intrinsic muscle, fascia and tendon of right and tendon fascia of intrinsicLaceration muscle, Laceration of intrinsic muscle, fascia and tendon of left index index of left and tendon fascia of intrinsicLaceration muscle, Code S66.123 (ICD–10–CM) injury diagnosis codes in the 2020 final ICD–10–CM injury codes in the 2020 final ICD–10–CM injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, Changes in the location of International I. Table 2020 — Con. 1, as of October matrix, diagnosis S66.522 S66.322 S66.124 S66.523 S66.323 S66.125 S66.324 S66.126 S66.325 S66.127 S66.326 S66.128 S66.327 S66.129 S66.328 S66.221 S66.329 S66.222 S66.421 S66.229 S66.422 S66.320 S66.321 S66.429 S66.520 S66.521 Page 18 National Health Statistics Reports  Number 150  December 28, 2020 final matrix Nature-of-injury category in 2020 Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound 2020 final matrix Body region category in Body region Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Upper leg and thigh Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Upper leg and thigh Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/Hip Extremities/Lower extremity/Hip Extremities/Lower extremity/Hip Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower 2016 proposed matrix proposed 2016 Nature-of-injury category in and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified 2016 proposed matrix proposed 2016 Body region category in Body region Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Upper leg and thigh Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Wrist, hand, and fingers Wrist, Upper leg and thigh Upper leg and thigh Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/Hip Extremities/Lower extremity/Hip Extremities/Lower extremity/Hip Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Extremities/Upper extremity/ Extremities/Upper Extremities/Lower extremity/ Extremities/Lower Description finger at wrist and hand level thigh level, unspecified thigh unspecified thigh level, finger at wrist and hand level finger at wrist and hand level tendon finger at wrist and hand level thigh finger at wrist and hand level unspecified finger at wrist and hand level finger at wrist and hand unspecified unspecified thigh unspecified wrist and hand level, right hand wrist and hand level, wrist and hand level, left hand left wrist and hand level, muscle group at thigh level, right thigh at thigh level, group muscle wrist and hand level, unspecified hand unspecified wrist and hand level, muscle group at thigh level, left thigh left at thigh level, group muscle and hand level, right hand and hand level, muscle group at thigh level, unspecified thigh unspecified at thigh level, group muscle and hand level, left hand left and hand level, thigh level, right thigh thigh level, and hand level, unspecified hand unspecified and hand level, thigh level, left thigh left thigh level, Laceration of intrinsic muscle, fascia and tendon of right ring and tendon fascia of intrinsicLaceration muscle, Laceration of other specified muscles, fascia and tendons at fascia and muscles, of other specified Laceration Laceration of muscle, fascia and tendon of right hip and tendon fascia of muscle, Laceration hip of left and tendon fascia of muscle, Laceration hip of unspecified and tendon fascia of muscle, Laceration and tendon of right fascia Laceration quadriceps muscle, Laceration of intrinsic muscle, fascia and tendon of left ring of left and tendon fascia of intrinsicLaceration muscle, Laceration of left quadriceps muscle, fascia and tendon fascia quadriceps muscle, of left Laceration Laceration of intrinsic muscle, fascia and tendon of right little of right little and tendon fascia of intrinsicLaceration muscle, Laceration of unspecified quadriceps muscle, fascia and quadricepsmuscle, of unspecified Laceration Laceration of intrinsic muscle, fascia and tendon of left little little of left and tendon fascia of intrinsicLaceration muscle, Laceration of adductor muscle, fascia and tendon of right and tendon fascia muscle, of adductor Laceration Laceration of intrinsic muscle, fascia and tendon of other and tendon fascia of intrinsicLaceration muscle, Laceration of adductor muscle, fascia and tendon of left thigh of left and tendon fascia muscle, of adductor Laceration Laceration of intrinsic muscle, fascia and tendon of and tendon fascia of intrinsicLaceration muscle, Laceration of adductor muscle, fascia and tendon of and tendon fascia muscle, of adductor Laceration Laceration of other specified muscles, fascia and tendons at fascia and muscles, of other specified Laceration Laceration of other specified muscles, fascia and tendons at fascia and muscles, of other specified Laceration Laceration of muscle, fascia and tendon of the posterior of the posterior and tendon fascia of muscle, Laceration Laceration of other specified muscles, fascia and tendons at fascia and muscles, of other specified Laceration Laceration of muscle, fascia and tendon of the posterior of the posterior and tendon fascia of muscle, Laceration Laceration of unspecified muscle, fascia and tendon at wrist fascia and muscle, of unspecified Laceration Laceration of muscle, fascia and tendon of the posterior of the posterior and tendon fascia of muscle, Laceration Laceration of unspecified muscle, fascia and tendon at wrist fascia and muscle, of unspecified Laceration Laceration of other specified muscles, fascia and tendons at fascia and muscles, of other specified Laceration Laceration of unspecified muscle, fascia and tendon at wrist fascia and muscle, of unspecified Laceration Laceration of other specified muscles, fascia and tendons at fascia and muscles, of other specified Laceration Code S66.524 (ICD–10–CM) injury diagnosis codes in the 2020 final ICD–10–CM injury codes in the 2020 final ICD–10–CM injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, Changes in the location of International I. Table 2020 — Con. 1, as of October matrix, diagnosis S76.829 S76.021 S76.022 S76.029 S76.121 S66.525 S76.122 S66.526 S76.129 S66.527 S76.221 S66.528 S76.222 S66.529 S76.229 S66.821 S76.321 S66.822 S66.829 S76.322 S66.921 S76.329 S66.922 S76.821 S66.929 S76.822 National Health Statistics Reports  Number 150  December 28, 2020 Page 19 final matrix Nature-of-injury category in 2020 and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified Open wound Open wound Open wound injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified 2020 final matrix Body region category in Body region Upper leg and thigh Upper leg and thigh Upper leg and thigh Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower Extremities/Lower extremity/Knee Extremities/Lower Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/Knee Extremities/Lower Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower 2016 proposed matrix proposed 2016 Nature-of-injury category in and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified 2016 proposed matrix proposed 2016 Body region category in Body region Upper leg and thigh Upper leg and thigh Upper leg and thigh Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/Knee Extremities/Lower Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower Description thigh level, right thigh thigh level, knee knee knee knee unspecified knee knee unspecified knee unspecified knee thigh level, left thigh left thigh level, thigh level, unspecified thigh unspecified thigh level, right knee left knee left knee unspecified knee unspecified knee knee knee unspecified knee Laceration of unspecified muscles, fascia and tendons at fascia and muscles, of unspecified Laceration Other tear of medial meniscus, current injury, right knee injury, current of medial meniscus, Other tear Other tear of medial meniscus, current injury, left knee left injury, current of medial meniscus, Other tear unspecified injury, current of medial meniscus, Other tear right injury, current meniscus, of lateral tear Bucket-handle left injury, current meniscus, of lateral tear Bucket-handle injury, current meniscus, of lateral tear Bucket-handle Bucket-handle tear of medial meniscus, current injury, left left injury, current of medial meniscus, tear Bucket-handle injury, current of medial meniscus, tear Bucket-handle right knee injury, current of medial meniscus, tear Peripheral knee left injury, current of medial meniscus, tear Peripheral injury, current of medial meniscus, tear Peripheral right knee injury, current of medial meniscus, tear Complex knee left injury, current of medial meniscus, tear Complex unspecified injury, current of medial meniscus, tear Complex Laceration of unspecified muscles, fascia and tendons at fascia and muscles, of unspecified Laceration Laceration of unspecified muscles, fascia and tendons at fascia and muscles, of unspecified Laceration Bucket-handle tear of unspecified meniscus, current injury, injury, current meniscus, of unspecified tear Bucket-handle Bucket-handle tear of unspecified meniscus, current injury, injury, current meniscus, of unspecified tear Bucket-handle injury, current meniscus, of unspecified tear Bucket-handle right knee injury, current meniscus, of unspecified Other tear knee left injury, current meniscus, of unspecified Other tear injury, current meniscus, of unspecified Other tear right injury, current meniscus, tear of unspecified Unspecified left injury, current meniscus, tear of unspecified Unspecified injury, current meniscus, tear of unspecified Unspecified right injury, current of medial meniscus, tear Bucket-handle Code S76.921 S83.242 S83.249 S83.251 S83.252 S83.259 S83.212 S83.219 S83.221 S83.222 S83.229 S83.231 S83.232 S83.239 S83.241 (ICD–10–CM) injury diagnosis codes in the 2020 final ICD–10–CM injury codes in the 2020 final ICD–10–CM injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, Changes in the location of International I. Table 2020 — Con. 1, as of October matrix, diagnosis S76.922 S76.929 S83.200 S83.201 S83.202 S83.203 S83.204 S83.205 S83.206 S83.207 S83.209 S83.211 Page 20 National Health Statistics Reports  Number 150  December 28, 2020 final matrix Nature-of-injury category in 2020 and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains and strains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified injury/Sprains Other specified Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound 2020 final matrix Body region category in Body region Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Extremities/Lower extremity/Knee Extremities/Lower Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower 2016 proposed matrix proposed 2016 Nature-of-injury category in and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified 2016 proposed matrix proposed 2016 Body region category in Body region Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Lower leg and ankle Lower Extremities/Lower extremity/Knee Extremities/Lower Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/Knee Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Description knee knee knee muscle group at lower leg level, right leg leg level, at lower group muscle muscle group at lower leg level, left leg left leg level, at lower group muscle muscle group at lower leg level, unspecified leg unspecified leg level, at lower group muscle group at lower leg level, right leg leg level, at lower group group at lower leg level, left leg left leg level, at lower group group at lower leg level, unspecified leg unspecified leg level, at lower group group at lower leg level, right leg leg level, at lower group group at lower leg level, left leg left leg level, at lower group group at lower leg level, unspecified leg unspecified leg level, at lower group level, right leg level, level, left leg left level, level, unspecified leg unspecified level, Peripheral tear of lateral meniscus, current injury, right knee injury, current meniscus, of lateral tear Peripheral Peripheral tear of lateral meniscus, current injury, left knee left injury, current meniscus, of lateral tear Peripheral unspecified injury, current meniscus, of lateral tear Peripheral right knee injury, current meniscus, of lateral tear Complex knee left injury, current meniscus, of lateral tear Complex unspecified injury, current meniscus, of lateral tear Complex right knee injury, current meniscus, of lateral Other tear knee left injury, current meniscus, of lateral Other tear unspecified injury, current meniscus, of lateral Other tear of articular current cartilage knee, of unspecified Tear of articular cartilage of rightcurrent knee, Tear of articular current knee, cartilage of left Tear tendon Achilles of rightLaceration Laceration of unspecified Achilles tendon Achilles of unspecified Laceration Laceration of left Achilles tendon Achilles of left Laceration Laceration of other muscle(s) and tendon(s) of posterior of posterior and tendon(s) of other muscle(s) Laceration Laceration of other muscle(s) and tendon(s) of posterior of posterior and tendon(s) of other muscle(s) Laceration Laceration of other muscle(s) and tendon(s) of posterior of posterior and tendon(s) of other muscle(s) Laceration Laceration of muscle(s) and tendon(s) of anterior muscle muscle of anterior and tendon(s) of muscle(s) Laceration Laceration of muscle(s) and tendon(s) of anterior muscle muscle of anterior and tendon(s) of muscle(s) Laceration Laceration of muscle(s) and tendon(s) of anterior muscle muscle of anterior and tendon(s) of muscle(s) Laceration Laceration of muscle(s) and tendon(s) of peroneal muscle muscle of peroneal and tendon(s) of muscle(s) Laceration Laceration of muscle(s) and tendon(s) of peroneal muscle muscle of peroneal and tendon(s) of muscle(s) Laceration Laceration of muscle(s) and tendon(s) of peroneal muscle muscle of peroneal and tendon(s) of muscle(s) Laceration Laceration of other muscle(s) and tendon(s) at lower leg at lower and tendon(s) of other muscle(s) Laceration Laceration of other muscle(s) and tendon(s) at lower leg at lower and tendon(s) of other muscle(s) Laceration Laceration of other muscle(s) and tendon(s) at lower leg at lower and tendon(s) of other muscle(s) Laceration Code S83.261 S83.262 S83.269 S83.271 S83.272 S83.279 S83.281 S83.282 S83.289 S83.30X S83.31X S83.32X S86.021 (ICD–10–CM) injury diagnosis codes in the 2020 final ICD–10–CM injury codes in the 2020 final ICD–10–CM injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, Changes in the location of International I. Table 2020 — Con. 1, as of October matrix, diagnosis S86.029 S86.022 S86.121 S86.122 S86.129 S86.221 S86.222 S86.229 S86.321 S86.322 S86.329 S86.821 S86.822 S86.829 National Health Statistics Reports  Number 150  December 28, 2020 Page 21 final matrix Nature-of-injury category in 2020 Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound Open wound 2020 final matrix Body region category in Body region Ankle and foot Lower leg and ankle Lower Ankle and foot Lower leg and ankle Lower Ankle and foot Lower leg and ankle Lower Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower 2016 proposed matrix proposed 2016 Nature-of-injury category in and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons and tendons Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified Other specified injury/Muscles Other specified 2016 proposed matrix proposed 2016 Body region category in Body region Ankle and foot Lower leg and ankle Lower Ankle and foot Lower leg and ankle Lower Ankle and foot Lower leg and ankle Lower Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Ankle and foot Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Extremities/Lower extremity/ Extremities/Lower Description leg level, right leg leg level, and foot level, right foot level, and foot leg level, left leg left leg level, and foot level, left foot left level, and foot leg level, unspecified leg unspecified leg level, and foot level, unspecified foot unspecified level, and foot at ankle and foot level, right foot level, at ankle and foot foot level, right foot level, foot at ankle and foot level, left foot left level, at ankle and foot foot level, left foot left level, foot at ankle and foot level, unspecified foot unspecified level, at ankle and foot foot level, unspecified foot unspecified level, foot toe at ankle and foot level, right foot level, at ankle and foot toe toe at ankle and foot level, left foot left level, at ankle and foot toe toe at ankle and foot level, unspecified foot unspecified level, at ankle and foot toe level, right foot level, level, left foot left level, level, unspecified foot unspecified level, Laceration of unspecified muscle(s) and tendon(s) at lower tendon(s) at lower muscle(s) and of unspecified Laceration Laceration of other specified muscles and tendons at ankle muscles and of other specified Laceration Laceration of unspecified muscle(s) and tendon(s) at lower tendon(s) at lower muscle(s) and of unspecified Laceration Laceration of other specified muscles and tendons at ankle muscles and of other specified Laceration Laceration of unspecified muscle(s) and tendon(s) at lower tendon(s) at lower muscle(s) and of unspecified Laceration Laceration of other specified muscles and tendons at ankle muscles and of other specified Laceration Laceration of muscle and tendon of long flexor muscle of toe muscle of of long flexor and tendon of muscle Laceration Laceration of unspecified muscle and tendon at ankle and muscle and of unspecified Laceration Laceration of muscle and tendon of long flexor muscle of toe muscle of of long flexor and tendon of muscle Laceration Laceration of unspecified muscle and tendon at ankle and muscle and of unspecified Laceration Laceration of muscle and tendon of long flexor muscle of toe muscle of of long flexor and tendon of muscle Laceration Laceration of unspecified muscle and tendon at ankle and muscle and of unspecified Laceration Laceration of muscle and tendon of long extensor muscle of muscle of long extensor and tendon of muscle Laceration Laceration of muscle and tendon of long extensor muscle of muscle of long extensor and tendon of muscle Laceration Laceration of muscle and tendon of long extensor muscle of muscle of long extensor and tendon of muscle Laceration Laceration of intrinsic muscle and tendon at ankle and foot at ankle and foot of intrinsic and tendon Laceration muscle Laceration of intrinsic muscle and tendon at ankle and foot at ankle and foot of intrinsic and tendon Laceration muscle Laceration of intrinsic muscle and tendon at ankle and foot at ankle and foot of intrinsic and tendon Laceration muscle Code SOURCES: National Center for Health Statistics and National Center for Injury Prevention and Control. Injury Prevention for and National Center Health Statistics for National Center SOURCES: S86.921 (ICD–10–CM) injury diagnosis codes in the 2020 final ICD–10–CM injury codes in the 2020 final ICD–10–CM injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, Changes in the location of International I. Table 2020 — Con. 1, as of October matrix, diagnosis S96.821 S86.922 S96.822 S86.929 S96.829 S96.021 S96.921 S96.022 S96.922 S96.029 S96.929 S96.121 S96.122 S96.129 S96.221 S96.222 S96.229 Page 22 National Health Statistics Reports  Number 150  December 28, 2020 Nature-of-injury category in 2020 final matrix Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Body region category in 2020 final matrixBody region Head and neck/Other head, face, and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other Head and neck/Other head, face, and neck/Face head, face, Head and neck/Other Head and neck/Traumatic brain injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic injury brain Head and neck/Traumatic and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other Head and neck/Traumatic brain injury brain Head and neck/Traumatic Description Fracture of coronoid process of right mandible process of coronoid Fracture mandible of left process of coronoid Fracture side unspecified of mandible, of ramus Fracture of right mandible of ramus Fracture mandible of left of ramus Fracture side unspecified of angle mandible, Fracture of angle right mandible Fracture mandible of angle left Fracture side unspecified of mandible, of alveolus Fracture of right mandible of alveolus Fracture mandible of left of alveolus Fracture side unspecified facial bones, skull and of other specified Fracture facial bones, right side skull and of other specified Fracture side left facial bones, skull and of other specified Fracture right wall, side of medial orbital Fracture side left wall, of medial orbital Fracture side unspecified wall, of medial orbital Fracture right wall, side orbital of lateral Fracture side left wall, orbital of lateral Fracture Fracture of coronoid process of mandible, unspecified side unspecified of mandible, process of coronoid Fracture Fracture of base of skull, left side of base skull, left Fracture side of base skull, unspecified Fracture right side condyle fracture, I occipital Type side left condyle fracture, I occipital Type right side condyle fracture, II occipital Type side left condyle fracture, II occipital Type right side condyle fracture, III occipital Type side left condyle fracture, III occipital Type or occiput, right side Other fracture side or occiput, left Other fracture right side roof, of orbital Fracture side left roof, of orbital Fracture side unspecified roof, of orbital Fracture of nasal bones Fracture side unspecified floor, of orbital Fracture right side floor, of orbital Fracture side left floor, of orbital Fracture right side Malar fracture, side left Malar fracture, right side Maxillary fracture, side left Maxillary fracture, right side fracture, Zygomatic side left fracture, Zygomatic part of unspecified of body right mandible Fracture mandible part of unspecified of body left Fracture side unspecified of mandible, of condylar process Fracture of right mandible of condylar process Fracture mandible of left of condylar process Fracture side unspecified of mandible, of subcondylar process Fracture of right mandible of subcondylar process Fracture mandible of left of subcondylar process Fracture Fracture of base skull, right side Fracture Code S02.631 S02.632 S02.640 S02.641 S02.642 S02.650 S02.651 S02.652 S02.670 S02.671 S02.672 S02.80X S02.81X S02.82X S02.831 S02.832 S02.839 S02.841 S02.842 S02.102 S02.109 S02.11A S02.11B S02.11C S02.11D S02.11E S02.11F S02.11G S02.11H S02.121 S02.122 S02.129 S02.2XX S02.30X S02.31X S02.32X S02.40A S02.40B S02.40C S02.40D S02.40E S02.40F S02.601 S02.602 S02.610 S02.611 S02.612 S02.620 S02.621 S02.622 S02.630 S02.101 (ICD–10–CM) injury diagnosis matrix to create create to matrix injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, International proposed the 2016 to Injurycodes added diagnosis II. Table 2020 1, as of October injurymatrix, diagnosis the 2020 final ICD–10–CM See footnote at end of table. National Health Statistics Reports  Number 150  December 28, 2020 Page 23 Nature-of-injury category in 2020 final matrix Fracture Fracture Dislocation Dislocation Dislocation Dislocation injury/Sprains and strains Other specified injury/Sprains and strains Other specified injury/Sprains and strains Other specified injury/Sprains and strains Other specified Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Superficial and contusion Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Body region category in 2020 final matrixBody region Head and neck/Other head, face, and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other and neck/Face head, face, Head and neck/Other (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest (thorax) Torso/Chest and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower Head and neck/Other head, face, and neck/Face head, face, Head and neck/Other Extremities/Lower extremity/Foot and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower Description Fracture of orbit, unspecified Fracture side unspecified Dislocation of jaw, right side Dislocation of jaw, side left Dislocation of jaw, bilateral Dislocation of jaw, side unspecified of jaw, Sprain right side of jaw, Sprain side left of jaw, Sprain bilateral of jaw, Sprain of thorax wall front of bilateral Contusion of thorax wall of middle front Contusion of thorax wall back of bilateral Contusion of thorax wall of middle back Contusion wall of thorax front superficial injuries of bilateral Unspecified wall of thorax front superficial injuries of middle Unspecified of thorax wall front of bilateral Abrasion of thorax wall of middle front Abrasion of thorax wall front (nonthermal)Blister of bilateral of thorax (nonthermal) wall Blister of middle front of thorax wall front External constriction of bilateral of thorax wall External constriction of middle front wall of thorax front body of bilateral foreign Superficial wall of thorax body of middle front foreign Superficial of thorax wall front of bilateral (nonvenomous) Insect bite of thorax wall of middle front (nonvenomous) Insect bite wall of thorax front of bilateral Other superficial bite wall of thorax of middle front Other superficial bite of right foot Other fracture foot of left Other fracture foot of unspecified Other fracture of right calcaneus fracture physeal Unspecified Fracture of lateral orbital wall, unspecified side unspecified wall, orbital of lateral Fracture Unspecified physeal fracture of left calcaneus of left fracture physeal Unspecified calcaneus of unspecified fracture physeal Unspecified of right calcaneus fracture I physeal Type Salter–Harris calcaneus of left fracture I physeal Type Salter–Harris calcaneus of unspecified fracture I physeal Type Salter–Harris of right calcaneus fracture II physeal Type Salter–Harris calcaneus of left fracture II physeal Type Salter–Harris calcaneus of unspecified fracture II physeal Type Salter–Harris of right calcaneus fracture III physeal Type Salter–Harris calcaneus of left fracture III physeal Type Salter–Harris calcaneus of unspecified fracture III physeal Type Salter–Harris of right calcaneus fracture IV physeal Type Salter–Harris calcaneus of left fracture IV physeal Type Salter–Harris calcaneus of unspecified fracture IV physeal Type Salter–Harris of right calcaneus fracture Other physeal calcaneus of left fracture Other physeal calcaneus of unspecified fracture Other physeal of right metatarsal fracture physeal Unspecified metatarsal of left fracture physeal Unspecified metatarsal of unspecified fracture physeal Unspecified Code S02.85X S03.00X S03.01X S03.02X S03.03X S03.40X S03.41X S03.42X S03.43X S20.213 S20.214 S20.223 S20.224 S20.303 S20.304 S20.313 S20.314 S20.323 S20.324 S20.343 S20.344 S20.353 S20.354 S20.363 S20.364 S20.373 S20.374 S92.811 S92.812 S92.819 S99.001 S99.002 S02.849 (ICD–10–CM) injury diagnosis matrix to create create to matrix injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, International proposed the 2016 to Injurycodes added diagnosis II. Table 2020 — Con. 1, as of October injurymatrix, diagnosis the 2020 final ICD–10–CM S99.009 S99.011 S99.012 S99.019 S99.021 S99.022 S99.029 S99.031 S99.032 S99.039 S99.041 S99.042 S99.049 S99.091 S99.092 S99.099 S99.101 S99.102 S99.109 See footnote at end of table. Page 24 National Health Statistics Reports  Number 150  December 28, 2020 Nature-of-injury category in 2020 final matrix Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Burns and corrosions/Burns Poisoning Poisoning Poisoning Poisoning Poisoning Poisoning Poisoning Poisoning Poisoning Poisoning Poisoning Poisoning Poisoning Poisoning Poisoning Poisoning Body region category in 2020 final matrixBody region Extremities/Lower extremity/Foot and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower and toes extremity/Foot Extremities/Lower Extremities/Lower extremity/Foot and toes extremity/Foot Extremities/Lower Extremities/Lower extremity/Foot and toes extremity/Foot Extremities/Lower leg and thigh extremity/Upper Extremities/Lower region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable Description Salter–Harris Type I physeal fracture of left metatarsal of left fracture I physeal Type Salter–Harris metatarsal of unspecified fracture I physeal Type Salter–Harris of right metatarsal fracture II physeal Type Salter–Harris metatarsal of left fracture II physeal Type Salter–Harris metatarsal of unspecified fracture II physeal Type Salter–Harris of right metatarsal fracture III physeal Type Salter–Harris metatarsal of left fracture III physeal Type Salter–Harris metatarsal of unspecified fracture III physeal Type Salter–Harris of right metatarsal fracture IV physeal Type Salter–Harris metatarsal of left fracture IV physeal Type Salter–Harris metatarsal of unspecified fracture IV physeal Type Salter–Harris of right metatarsal fracture Other physeal metatarsal of left fracture Other physeal metatarsal of unspecified fracture Other physeal toe of phalanx right fracture physeal Unspecified toe of phalanx left fracture physeal Unspecified toe of phalanx unspecified fracture physeal Unspecified of phalanx right toe fracture I physeal Type Salter–Harris toe of phalanx left fracture I physeal Type Salter–Harris toe of phalanx unspecified fracture I physeal Type Salter–Harris of phalanx right toe fracture II physeal Type Salter–Harris toe of phalanx left fracture II physeal Type Salter–Harris toe of phalanx unspecified fracture II physeal Type Salter–Harris of phalanx right toe fracture III physeal Type Salter–Harris toe of phalanx left fracture III physeal Type Salter–Harris toe of phalanx unspecified fracture III physeal Type Salter–Harris of phalanx right toe fracture IV physeal Type Salter–Harris toe of phalanx left fracture IV physeal Type Salter–Harris toe of phalanx unspecified fracture IV physeal Type Salter–Harris of phalanx right toe fracture Other physeal toe of phalanx left fracture Other physeal Salter–Harris Type I physeal fracture of right metatarsal fracture I physeal Type Salter–Harris Other physeal fracture of phalanx of unspecified toe of phalanx unspecified fracture Other physeal of rightBurn thigh of second degree (unintentional) accidental analogs, or fentanyl fentanyl by Poisoning self-harm intentional analogs, or fentanyl fentanyl by Poisoning assault analogs, or fentanyl fentanyl by Poisoning undetermined analogs, or fentanyl fentanyl by Poisoning (unintentional) accidental tramadol, by Poisoning self-harm intentional tramadol, by Poisoning assault tramadol, by Poisoning undetermined tramadol, by Poisoning (unintentional) accidental narcotics, other synthetic by Poisoning self-harm intentional narcotics, other synthetic by Poisoning assault narcotics, other synthetic by Poisoning undetermined narcotics, other synthetic by Poisoning (unintentional) accidental ecstasy, by Poisoning self-harm intentional ecstasy, by Poisoning assault ecstasy, by Poisoning undetermined ecstasy, by Poisoning Code S99.112 S99.119 S99.121 S99.122 S99.129 S99.131 S99.132 S99.139 S99.141 S99.142 S99.149 S99.191 S99.192 S99.199 S99.201 S99.202 S99.209 S99.211 S99.212 S99.219 S99.221 S99.222 S99.229 S99.231 S99.232 S99.239 S99.241 S99.242 S99.249 S99.291 S99.292 S99.299 S99.111 (ICD–10–CM) injury diagnosis matrix to create create to matrix injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, International proposed the 2016 to Injurycodes added diagnosis II. Table 2020 — Con. 1, as of October injurymatrix, diagnosis the 2020 final ICD–10–CM T24.211 T40.411 T40.412 T40.413 T40.414 T40.421 T40.422 T40.423 T40.424 T40.491 T40.492 T40.493 T40.494 T43.641 T43.642 T43.643 T43.644 See footnote at end of table. National Health Statistics Reports  Number 150  December 28, 2020 Page 25 Nature-of-injury category in 2020 final matrix Fracture Other effects of external causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects Other effects of external causes of external Other effects Other effects of external causes of external Other effects causes of external Other effects Other effects of external causes of external Other effects Other effects of external causes of external Other effects Other effects of external causes of external Other effects Other effects of external causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects injury/Other injuryOther specified Poisoning Poisoning Poisoning Poisoning Other effects of external causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects causes of external Other effects Fracture Fracture Fracture Fracture 1 Body region category in 2020 final matrixBody region Unclassifiable by body region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable Unclassifiable by body region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable region/Systemwide by body Unclassifiable extremity/Hip Extremity/Lower extremity/Hip Extremity/Lower extremity/Knee Extremity/Lower extremity/Knee Extremity/Lower and unspecified multiple, extremity/Other, Extremity/Lower Description puerperium unspecified trimester unspecified third trimester third second trimester first trimester first undetermined self-harm (unintentional) Physical abuse complicating pregnancy, second trimester complicating pregnancy, abuse Physical trimester third complicating pregnancy, abuse Physical trimester unspecified complicating pregnancy, abuse Physical complicating childbirth abuse Physical complicating the puerperium abuse Physical trimester first complicating pregnancy, abuse Sexual second trimester complicating pregnancy, abuse Sexual trimester third complicating pregnancy, abuse Sexual trimester unspecified complicating pregnancy, abuse Sexual Physical abuse complicating pregnancy, first trimester first complicating pregnancy, abuse Physical Injury, poisoning and certain causes complicating childbirth other consequences of external Injury, poisoning and certain causes complicating the other consequences of external Injury, Injury, poisoning and certain other consequences of external causes complicating pregnancy, poisoning and certain causes complicating pregnancy, other consequences of external Injury, Injury, poisoning and certain other consequences of external causes complicating pregnancy, poisoning and certain causes complicating pregnancy, other consequences of external Injury, Injury, poisoning and certain other consequences of external causes complicating pregnancy, poisoning and certain causes complicating pregnancy, other consequences of external Injury, Exertional heatstroke and sunstroke Other heatstroke confirmed exploitation, sexual forced Adult confirmed exploitation, Child sexual confirmed labor exploitation, forced Adult confirmed labor exploitation, Child forced suspected exploitation, sexual forced Adult suspected exploitation, Child sexual suspected labor exploitation, forced Adult suspected labor exploitation, Child forced unspecified Compartment syndrome poisoning and certain causes complicating pregnancy, other consequences of external Injury, Heatstroke and sunstroke Heatstroke Poisoning by multiple unspecified drugs, medicaments and biological substances, drugs, medicaments and biological substances, unspecified multiple by Poisoning Poisoning by multiple unspecified drugs, medicaments and biological substances, assault drugs, medicaments and biological substances, unspecified multiple by Poisoning Poisoning by multiple unspecified drugs, medicaments and biological substances, intentional intentional drugs, medicaments and biological substances, unspecified multiple by Poisoning Poisoning by multiple unspecified drugs, medicaments and biological substances, accidental accidental drugs, medicaments and biological substances, unspecified multiple by Poisoning Sexual abuse complicating childbirth abuse Sexual complicating the puerperium abuse Sexual trimester first complicating pregnancy, abuse Psychological second trimester complicating pregnancy, abuse Psychological trimester third complicating pregnancy, abuse Psychological trimester unspecified complicating pregnancy, abuse Psychological complicating childbirth abuse Psychological complicating the puerperium abuse Psychological right hip joint internal prosthetic around fracture Periprosthetic hip joint left internal prosthetic around fracture Periprosthetic right knee joint internal prosthetic around fracture Periprosthetic knee joint left internal prosthetic around fracture Periprosthetic joint other internal prosthetic around fracture Periprosthetic Code O9A.312 O9A.313 O9A.319 O9A.32 O9A.33 O9A.411 O9A.412 O9A.413 O9A.419 O9A.42 O9A.311 O9A.22 O9A.23 O9A.219 O9A.213 O9A.212 T67.02X T67.09X T74.51X T74.52X T74.61X T74.62X T76.51X T76.52X T76.61X T76.62X T79.A0X O9A.211 T67.01X T50.914 T50.913 T50.912 T50.911 (ICD–10–CM) injury diagnosis matrix to create create to matrix injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, International proposed the 2016 to Injurycodes added diagnosis II. Table 2020 — Con. 1, as of October injurymatrix, diagnosis the 2020 final ICD–10–CM O9A.43 O9A.511 O9A.512 O9A.513 O9A.519 O9A.52 O9A.53 T84.040 T84.041 T84.042 T84.043 T84.048 See footnote at end of table. Page 26 National Health Statistics Reports  Number 150  December 28, 2020 Nature-of-injury category in 2020 final matrix Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture Fracture 1 1 1 Body region category in 2020 final matrixBody region Extremity/Lower extremity/Hip Extremity/Lower extremity/Knee Extremity/Lower extremity/Knee Extremity/Lower leg and ankle extremity/Lower Extremity/Lower leg and ankle extremity/Lower Extremity/Lower and upper arm Extremity/Upper extremity/Shoulder and upper arm Extremity/Upper extremity/Shoulder and elbow Extremity/Upper extremity/Forearm and elbow Extremity/Upper extremity/Forearm and unspecified multiple, extremity/Other, Extremity/Lower Extremity/Lower extremity/Hip Extremity/Lower and unspecified multiple, extremity/Other, Extremity/Lower Extremity/Lower extremity/Other, multiple, and unspecified multiple, extremity/Other, Extremity/Lower Description Periprosthetic fracture around internal prosthetic left hip joint left internal prosthetic around fracture Periprosthetic right knee joint internal prosthetic around fracture Periprosthetic knee joint left internal prosthetic around fracture Periprosthetic right ankle joint internal prosthetic around fracture Periprosthetic ankle joint left internal prosthetic around fracture Periprosthetic right shoulder joint internal prosthetic around fracture Periprosthetic shoulder joint left internal prosthetic around fracture Periprosthetic rightjoint elbow internal prosthetic around fracture Periprosthetic joint elbow left internal prosthetic around fracture Periprosthetic joint other internal prosthetic around fracture Periprosthetic Periprosthetic fracture around internal prosthetic right hip joint internal prosthetic around fracture Periprosthetic joint internal prosthetic unspecified around fracture Periprosthetic Periprosthetic fracture around unspecified internal prosthetic joint internal prosthetic unspecified around fracture Periprosthetic Code Code does not specify whether the joint is located in the upper or lower extremity. A decision was made to assign the code to the Extremity/Lower extremity/Other, multiple, and unspecified body region. region. body and unspecified multiple, extremity/Other, the Extremity/Lower assign the code to made to A decision was extremity. in the upper or lower does not specify whether the joint is located Code SOURCES: National Center for Health Statistics and National Center for Injury Prevention and Control. Injury Prevention for and National Center Health Statistics for National Center SOURCES: 1 M97.02X M97.11X M97.12X M97.21X M97.22X M97.31X M97.32X M97.41X M97.42X M97.8XX M97.01X M97.01X M97.9XX T84.049 (ICD–10–CM) injury diagnosis matrix to create create to matrix injury diagnosis Clinical Modification (ICD–10–CM) Revision, 10th Classification of Diseases, International proposed the 2016 to Injurycodes added diagnosis II. Table 2020 — Con. 1, as of October injurymatrix, diagnosis the 2020 final ICD–10–CM U.S. DEPARTMENT OF FIRST CLASS MAIL HEALTH & HUMAN SERVICES POSTAGE & FEES PAID CDC/NCHS Centers for Disease Control and Prevention PERMIT NO. G-284 National Center for Health Statistics 3311 Toledo Road, Room 4551, MS P08 Hyattsville, MD 20782–2064

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National Health Statistics Reports  Number 150  December 28, 2020

Suggested citation Copyright information National Center for Health Statistics Hedegaard H, Johnson RL, Garnett MF, All material appearing in this report is in Brian C. Moyer, Ph.D., Director Thomas KE. The 2020 International the public domain and may be reproduced Amy M. Branum, Ph.D., Acting Associate Classification of Diseases, 10th Revision, or copied without permission; citation as to Director for Science Clinical Modification injury diagnosis framework source, however, is appreciated. for categorizing injuries by body region and Division of Analysis and Epidemiology nature of injury. National Health Statistics Irma E. Arispe, Ph.D., Director Reports; no 150. Hyattsville, MD: National Kevin C. Heslin, Ph.D., Associate Director for Center for Health Statistics. 2020. Science

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