Public Use Data File Documentation
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Public Use Data File Documentation Part III - Medical Coding Manual and Short Index National Health Interview Survey, 1995 From the CENTERSFOR DISEASECONTROL AND PREVENTION/NationalCenter for Health Statistics U.S. DEPARTMENTOF HEALTHAND HUMAN SERVICES Centers for Disease Control and Prevention National Center for Health Statistics CDCCENTERS FOR DlSEASE CONTROL AND PREVENTlON Public Use Data File Documentation Part Ill - Medical Coding Manual and Short Index National Health Interview Survey, 1995 U.S. DEPARTMENT OF HEALTHAND HUMAN SERVICES Centers for Disease Control and Prevention National Center for Health Statistics Hyattsville, Maryland October 1997 TABLE OF CONTENTS Page SECTION I. INTRODUCTION AND ORIENTATION GUIDES A. Brief Description of the Health Interview Survey ............. .............. 1 B. Importance of the Medical Coding ...................... .............. 1 C. Codes Used (described briefly) ......................... .............. 2 D. Appendix III ...................................... .............. 2 E, The Short Index .................................... .............. 2 F. Abbreviations and References ......................... .............. 3 G. Training Preliminary to Coding ......................... .............. 4 SECTION II. CLASSES OF CHRONIC AND ACUTE CONDITIONS A. General Rules ................................................... 6 B. When to Assign “1” (Chronic) ........................................ 6 C. Selected Conditions Coded ” 1” Regardless of Onset ......................... 7 D. When to Assign “2” (Acute) ......................................... a E. Assigning the Diagnostic Code for Acute, Chronic or Unspecified ................ 9 SECTION Ill. GENERAL CODING PRINCIPLES AND PROBLEMS A. TheObjective ................................................... 10 B. Expressions Indicating Doubt ......................................... 10 C. Dagger-Asterisk System ............................................ 11 D. Overcoding, Undercoding ............................................ 12 E. Arrested, Inactive, Corrected Chronic Conditions ............................ 13 F. “Active” Cause and Later Condition Pages ................................ 13 G. Symptoms and Troubles, General ...................................... 14 H. Nervous or Mental Trouble ........................................... 17 I. “Removal and Other Operations” on Condition Page .......................... ia J. Allergies ......................................................... 21 K. Disc Conditions ................................................... 21 L. Growths ........................................................ 22 M. Pregnancy with Hypertension and Other Toxemias .......................... 23 N. Spelling Problems ................................................. 23 0. Typhoid and Other Carrier States ...................................... 23 P. When to Use 799.8,799.9 ........................................... 23 Q. Terms Not in Short Index or Vols. 1 or 2 .................................. 23 SECTION IV. “COMBINING” AND “MERGING” A. “Combining” ..................................................... 24 1. General .................................................... 24 2. Specific Rules .............................................. 24 B.“Merging” ....................................................... 26 Page SECTION V. IMPAIRMENTS AND THEIR CAUSES A. General ........................................................ 27 8. Procedure for Assigning X-codes for Impaired Extremities ....................... 28 C. Priority in Assigning X-codes for Different Types of Impairments ................. 29 D. Multiple Impairments, Same Person ..................................... 29 E. Etiology.. ...................................................... 31 F. Visual Impairments ................................................ 32 G. Hearing Impairments ............................................... 36 H. Speech Impairments ............................................... 38 1. Special Sense Impairments ........................................... 39 J. Special Learning Disability ........................................... 40 K. Absence of Extremities, and Certain Other Parts ........................... 41 L. Paralysis, Complete and Partial ........................................ 43 M. Deformity: Limb, Back, Trunk ........................................ 45 N. Non-Paralytic Orthopedic Impairment .................................... 47 0. Impairment, NEC .................................................. 49 SECTION VI. INJURIES, ACCIDENTS AND THEIR EFFECTS A. Injury, General ... ............................................... 50 B. Date of Onset .................................................... 51 C. Multiple “Injuries” and Multiple Accidents ................................. 51 SECTION VII. CONDITIONS RELATED TO CHILDBEARING A. Infants . ...... ........... ...... 52 B. Pregnancy . ...... ........... ...... 52 C. Abortion . ...... ........... ...... 52 0. Deliveries . ...... ........... ...... 53 E. Puerperal Complications . ...... ........... ...... 53 F. 1 -Digit Supplementary Code ...... ........... ...... 53 SECTION VIII. HOSPITALIZATION AND SURGERY A. General ........................................................ 54 B. Codable Admissions ................................................ 54 C. Coding Operations ................................................ 54 D. Multiple Operations ................................................ 54 II Page APPENDIX I. X-CODE FOR SPECIAL IMPAIRMENTS A. History and Development of the X-code ................................... 1 B. General Characteristics of Special Impairments ............................... 1 C. ICD Codes for Impairments ............................................. 2 D. Late Effects of Diseases, Injuries and Poisonings .............................. 7 E. List of l-Digit Etiology Codes ........................................... 9 F. Classification of Impairments, by Type and Site .............................. 10 X00-X03 tmpairment of Vision ...................................... 10 X05-X09 Impairment of Hearing .................................... 10 Xl O-Xl 9 Impairment of Speech, Intelligence, Special Sense ................. 11 X20-X35 Absence, Loss, Extremities, and Certain Other Sites ............... 12 X40-X64 Paralysis, Complete or Partial ................................ 13 X70-X79 Specified Deformity of Limbs, Trunk, Back ....................... 15 X80-X89 Non-Paralytic Orthopedic Impairment, (Chronic) NEC ................ 16 X90-X99 Defect, Abnormality, Special Impairment, NEC .................... 17 APPENDIX II. CLASSIFICATION OF OPERATIONS, AND NON OPERATIVE PROCEDURES, FOR HIS General ............................................................. 1 Operations .......................................................... Operation, Type Unknown, Site Unknown (00) ........................... 2 Operations on the Nervous System (01-05) .............................. 2 Operations on the Endocrine System (06-07) ............................. 2 Operations on the Eye (08-16) ....................................... 2 Operations on the Ear (I 8-20) ....................................... 3 Operations on the Nose, Mouth, and Pharynx (21-29) ....................... 3 Operations on the Respiratory System (30-34) ........................... 3 Operations on the Cardiovascular System (35-39) ......................... 4 Operations on the Hemic and Lymphatic System (40-41) .................... 4 Operations on the Digestive System (42-54) ............................. 4 Operations on the Urinary System (55-59) .............................. 5 Operations on the Male Genital Organs (60-64) ........................... 5 Operations on the Female Genital Organs (65-71) ......................... 5 Obstetrical Procedures (72-75) ...................................... 5 Operations on the Musculoskeletal System (76-84) ........................ 6 Operations on the lntegumentary System (85-86) ......................... 7 Miscellaneous Diagnostic and Therapeutic Procedures (87-99) ................. 7 Ill Page APPENDIX III. MODIFICATIONS OF THE NINTH REVISION OF THE INTERNATIONAL CLASSIFICATION OF DISEASES, AND SPECIAL INSTRUCTIONS, USED FOR THE HEALTH INTERVIEW SURVEY Explanatory Notes ..................................................... 2 Infective and Parasitic Diseases (001-136, 137-139) ............................. 4 Neoplasms (140-239) ................................................... 5 Endocrine, Nutritional and Metabolic Diseases and Immunity Disorders (240-279) .............................................. 6 Diseases of the Blood and Blood-Forming Organs (280-289) ........................ 7 Mental Disorders (290-319) ............................................... 8 Diseases of the Nervous System and Sense Organs (320-389) ....................... 12 Disorders of the Peripheral Nervous System (350-359) ............................ 15 Disorders of the Eye and Adnexa (360-379) ................................... 16 Diseases of Ear and Mastoid Process (380-389) ................................. 17 Rheumatic Fever and Chronic Rheumatic Heart Disease (390-398) .................... 19 Hypertensive Disease (401-405) ........................................... 19 Ischemic Heart Disease (410-414) .......................................... 20 Chronic Pulmonary Heart Disease (416) ...................................... 20 Other Forms of Heart Disease (420-429) .....................................