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Supplemental Information

PEDIATRICS Volume 146, Number 2, August 2020 1 SUPPLEMENTAL TABLE 4 ICD-10 Codes Used for and in the Study ICD-10 Code ICD-10 Code Description CCS Category Pneumonia A3781 Whooping due to other Bordetella with pneumonia 3 A3791 Whooping cough, unspecified species with pneumonia 3 A5484 Gonococcal pneumonia 9 A5004 Early congenital syphilitic pneumonia 9 A0103 Typhoid pneumonia 122 A0222 Salmonella pneumonia 122 A202 Pneumonic plague 122 A3701 Whooping cough due to with pneumonia 122 A3711 Whooping cough due to Bordetella parapertussis with pneumonia 122 A430 Pulmonary nocardiosis 122 A481 Legionnaires 122 B012 Varicella pneumonia 122 B052 complicated by pneumonia 122 B0681 Rubella pneumonia 122 B250 Cytomegaloviral 122 B371 Pulmonary candidiasis 122 B380 pulmonary coccidioidomycosis 122 B381 Chronic pulmonary coccidioidomycosis 122 B382 Pulmonary coccidioidomycosis, unspecified 122 B390 Acute pulmonary histoplasmosis capsulati 122 B391 Chronic pulmonary histoplasmosis capsulati 122 B392 Pulmonary histoplasmosis capsulati, unspecified 122 B583 Pulmonary toxoplasmosis 122 B59 Pneumocystosis 122 B7781 Ascariasis pneumonia 122 J120 Adenoviral pneumonia 122 J121 Respiratory syncytial pneumonia 122 J122 Parainfluenza virus pneumonia 122 J123 pneumonia 122 J1281 Pneumonia due to SARS-associated 122 J1289 Other 122 J129 Viral pneumonia, unspecified 122 J13 Pneumonia due to pneumoniae 122 J14 Pneumonia due to Hemophilus influenzae 122 J150 Pneumonia due to 122 J151 Pneumonia due to Pseudomonas 122 J1520 Pneumonia due to Staphylococcus, unspecified 122 J15211 Pneumonia due to methicillin-susceptible Staphylococcus 122 J15212 Pneumonia due to methicillin-resistant 122 J1529 Pneumonia due to other Staphylococcus 122 J153 Pneumonia due to Streptococcus, group B 122 J154 Pneumonia due to other streptococci 122 J155 Pneumonia due to Escherichia coli 122 J156 Pneumonia due to other aerobic Gram-negative 122 J157 Pneumonia due to Mycoplasma pneumoniae 122 J158 Pneumonia due to other specified bacteria 122 J159 Unspecified 122 J160 Chlamydial pneumonia 122 J168 Pneumonia due to other specified infectious organisms 122 J17 Pneumonia in classified elsewhere 122 J180 , unspecified organism 122 J181 , unspecified organism 122 J188 Other pneumonia, unspecified organism 122 J189 Pneumonia, unspecified organism 122 J851 of lung with pneumonia 122 J09X1 Influenza due to identified novel influenza A virus with pneumonia 123 J1000 Flu due to other identified influenza virus with unspecified type of pneumonia 123 J1001 Flu due to other identified influenza virus with the same other identified 123 influenza virus pneumonia

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SUPPLEMENTAL TABLE 4 Continued ICD-10 Code ICD-10 Code Description CCS Category J1008 Influenza due to other identified influenza virus with other pneumonia 123 J1100 Flu due to unidentified influenza virus with unspecified type of pneumonia 123 J1108 Flu due to unidentified influenza virus with specified pneumonia 123 J182 Hypostatic pneumonia, unspecified organism 133 J84111 Idiopathic interstitial pneumonia, not otherwise specified 133 J84116 Cryptogenic organizing pneumonia 133 J84117 Desquamative interstitial pneumonia 133 J842 Lymphoid interstitial pneumonia 133 Z8701 Personal history of pneumonia (recurrent) 133 P230 Congenital pneumonia due to viral agent 224 P231 Congenital pneumonia due to Chlamydia 224 P232 Congenital pneumonia due to Staphylococcus 224 P233 Congenital pneumonia due to Streptococcus, group B 224 P234 Congenital pneumonia due to E. coli 224 P235 Congenital pneumonia due to Pseudomonas 224 P236 Congenital pneumonia due to other bacterial agents 224 P238 Congenital pneumonia due to other organisms 224 P239 Congenital pneumonia, unspecified 224 J95851 Ventilator-associated pneumonia 238 Sinusitis J0140 Acute pansinusitis, unspecified 126 J0141 Acute recurrent pansinusitis 126 J0180 Other acute sinusitis 126 J0181 Other acute recurrent sinusitis 126 J0190 Acute sinusitis, unspecified 126 J0191 Acute recurrent sinusitis, unspecified 126 J069 Acute upper respiratory , unspecified 126 J320 Chronic maxillary sinusitis 126 J321 Chronic frontal sinusitis 126 J322 Chronic ethmoidal sinusitis 126 J323 Chronic sphenoidal sinusitis 126 J324 Chronic pansinusitis 126 J328 Other chronic sinusitis 126 J329 Chronic sinusitis, unspecified 126 SARS, severe acute respiratory syndrome.

PEDIATRICS Volume 146, Number 2, August 2020 3 SUPPLEMENTAL TABLE 5 ICD-10 Codes for Acute Diagnoses With Potentially Appropriate Indications for ICD-10 Code ICD-10 Code Description CCS Category J050 Acute obstructive () 126 R062 Wheezing 133 T486X6A Underdosing of antiasthmatics, initial encounter 244 T486X6D Underdosing of antiasthmatics, subsequent encounter 244 T486X6S Underdosing of antiasthmatics, sequela 244 J4520 Mild intermittent , uncomplicated 128 J4521 Mild intermittent asthma with (acute) exacerbation 128 J4522 Mild intermittent asthma with status asthmaticus 128 J4530 Mild persistent asthma, uncomplicated 128 J4531 Mild persistent asthma with (acute) exacerbation 128 J4532 Mild persistent asthma with status asthmaticus 128 J4540 Moderate persistent asthma, uncomplicated 128 J4541 Moderate persistent asthma with (acute) exacerbation 128 J4542 Moderate persistent asthma with status asthmaticus 128 J4550 Severe persistent asthma, uncomplicated 128 J4551 Severe persistent asthma with (acute) exacerbation 128 J4552 Severe persistent asthma with status asthmaticus 128 J45901 Unspecified asthma with (acute) exacerbation 128 J45902 Unspecified asthma with status asthmaticus 128 J45909 Unspecified asthma, uncomplicated 128 J45990 Exercise-induced bronchospasm 128 J45991 Cough-variant asthma 128 J45998 Other asthma 128 B4481 Allergic bronchopulmonary 253 J305 Allergic due to food 253 K522 Allergic and dietetic gastroenteritis and colitis 253 K5221 Food protein–induced enterocolitis syndrome 253 K5222 Food protein–induced enteropathy 253 K5229 Other allergic and dietetic gastroenteritis and colitis 253 K9041 Nonceliac gluten sensitivity 253 L200 Besnier prurigo 253 L2081 Atopic neurodermatitis 253 L2082 Flexural eczema 253 L2083 Infantile (acute) (chronic) eczema 253 L2084 Intrinsic (allergic) eczema 253 L2089 Other atopic dermatitis 253 L209 Atopic dermatitis, unspecified 253 L22 Diaper dermatitis 253 L230 Allergic contact dermatitis due to metals 253 L231 Allergic contact dermatitis due to adhesives 253 L232 Allergic contact dermatitis due to cosmetics 253 L233 Allergic contact dermatitis due to drugs in contact with skin 253 L234 Allergic contact dermatitis due to dyes 253 L235 Allergic contact dermatitis due to other chemical products 253 L236 Allergic contact dermatitis due to food in contact with skin 253 L237 Allergic contact dermatitis due to plants, except food 253 L2381 Allergic contact dermatitis due to animal (cat) (dog) dander 253 L2389 Allergic contact dermatitis due to other agents 253 L239 Allergic contact dermatitis, unspecified cause 253 L240 Irritant contact dermatitis due to detergents 253 L241 Irritant contact dermatitis due to oils and greases 253 L242 Irritant contact dermatitis due to solvents 253 L243 Irritant contact dermatitis due to cosmetics 253 L244 Irritant contact dermatitis due to drugs in contact with skin 253 L245 Irritant contact dermatitis due to other chemical products 253 L246 Irritant contact dermatitis due to food in contact with skin 253 L247 Irritant contact dermatitis due to plants, except food 253 L2481 Irritant contact dermatitis due to metals 253 L2489 Irritant contact dermatitis due to other agents 253

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SUPPLEMENTAL TABLE 5 Continued ICD-10 Code ICD-10 Code Description CCS Category L249 Irritant contact dermatitis, unspecified cause 253 L250 Unspecified contact dermatitis due to cosmetics 253 L251 Unspecified contact dermatitis due to drugs in contact with skin 253 L252 Unspecified contact dermatitis due to dyes 253 L253 Unspecified contact dermatitis due to other chemical products 253 L254 Unspecified contact dermatitis due to food in contact with skin 253 L255 Unspecified contact dermatitis due to plants, except food 253 L258 Unspecified contact dermatitis due to other agents 253 L259 Unspecified contact dermatitis, unspecified cause 253 L270 Generalized skin eruption due to drugs and medicaments taken internally 253 L271 Localized skin eruption due to drugs and medicaments taken internally 253 L272 Dermatitis due to ingested food 253 L278 Dermatitis due to other substances taken internally 253 L279 Dermatitis due to unspecified substance taken internally 253 L300 Nummular dermatitis 253 L302 Cutaneous autosensitization 253 L308 Other specified dermatitis 253 L309 Dermatitis, unspecified 253 L500 Allergic urticaria 253 L501 Idiopathic urticaria 253 L502 Urticaria due to cold and heat 253 L503 Dermatographic urticaria 253 L504 Vibratory urticaria 253 L505 Cholinergic urticaria 253 L506 Contact urticaria 253 L508 Other urticaria 253 L509 Urticaria, unspecified 253 L560 Drug phototoxic response 253 L561 Drug photoallergic response 253 L562 Photocontact dermatitis (berloque dermatitis) 253 L563 Solar urticaria 253 L564 Polymorphous light eruption 253 L568 Other acute skin changes due to UV radiation 253 L569 Acute skin change due to UV radiation, unspecified 253 L578 Other skin changes due to chronic exposure to nonionizing radiation 253 L579 Skin changes due to chronic exposure to nonionizing radiation, unspecified 253 L580 Acute radiodermatitis 253 L581 Chronic radiodermatitis 253 L589 Radiodermatitis, unspecified 253 L590 ab igne (dermatitis ab igne) 253 L598 Other disorder of the skin, subcutaneous tissue related to radiation 253 L599 Disorder of the skin, subcutaneous tissue related to radiation, unspecified 253 T7800XA Anaphylactic reaction due to unspecified food, initial encounter 253 T7800XD Anaphylactic reaction due to unspecified food, subsequent encounter 253 T7800XS Anaphylactic reaction due to unspecified food, sequela 253 T7801XA Anaphylactic reaction due to peanuts, initial encounter 253 T7801XD Anaphylactic reaction due to peanuts, subsequent encounter 253 T7801XS Anaphylactic reaction due to peanuts, sequela 253 T7802XA Anaphylactic reaction due to shellfish (crustaceans), initial encounter 253 T7802XD Anaphylactic reaction due to shellfish (crustaceans), subsequent encounter 253 T7802XS Anaphylactic reaction due to shellfish (crustaceans), sequela 253 T7803XA Anaphylactic reaction due to other fish, initial encounter 253 T7803XD Anaphylactic reaction due to other fish, subsequent encounter 253 T7803XS Anaphylactic reaction due to other fish, sequela 253 T7804XA Anaphylactic reaction due to fruits and vegetables, initial encounter 253 T7804XD Anaphylactic reaction due to fruits and vegetables, subsequent encounter 253 T7804XS Anaphylactic reaction due to fruits and vegetables, sequela 253 T7805XA Anaphylactic reaction due to tree nuts and seeds, initial encounter 253 T7805XD Anaphylactic reaction due to tree nuts and seeds, subsequent encounter 253 T7805XS Anaphylactic reaction due to tree nuts and seeds, sequela 253

PEDIATRICS Volume 146, Number 2, August 2020 5 SUPPLEMENTAL TABLE 5 Continued ICD-10 Code ICD-10 Code Description CCS Category T7806XA Anaphylactic reaction due to food additives, initial encounter 253 T7806XD Anaphylactic reaction due to food additives, subsequent encounter 253 T7806XS Anaphylactic reaction due to food additives, sequela 253 T7807XA Anaphylactic reaction due to milk and dairy products, initial encounter 253 T7807XD Anaphylactic reaction due to milk and dairy products, subsequent encounter 253 T7807XS Anaphylactic reaction due to milk and dairy products, sequela 253 T7808XA Anaphylactic reaction due to eggs, initial encounter 253 T7808XD Anaphylactic reaction due to eggs, subsequent encounter 253 T7808XS Anaphylactic reaction due to eggs, sequela 253 T7809XA Anaphylactic reaction due to other food products, initial encounter 253 T7809XD Anaphylactic reaction due to other food products, subsequent encounter 253 T7809XS Anaphylactic reaction due to other food products, sequela 253 T781XXA Other adverse food reactions, not elsewhere classified, initial encounter 253 T781XXD Other adverse food reactions, not elsewhere classified, subsequent encounter 253 T781XXS Other adverse food reactions, not elsewhere classified, sequela 253 T782XXA Anaphylactic shock, unspecified, initial encounter 253 T7840XA , unspecified, initial encounter 253 T7849XA Other allergy, initial encounter 253 Z516 Encounter for desensitization to allergens 253 Z87892 Personal history of anaphylaxis 253 Z880 Allergy status to 253 Z881 Allergy status to other agents status 253 Z882 Allergy status to sulfonamides status 253 Z883 Allergy status to other anti-infective agents status 253 Z884 Allergy status to anesthetic agent status 253 Z885 Allergy status to narcotic agent status 253 Z886 Allergy status to agent status 253 Z887 Allergy status to serum and vaccine status 253 Z888 Allergy status to other drugs, medicaments, and biological substances status 253 Z889 Allergy status to unspecified drugs, medicaments, and biological substances 253 status Z91010 Allergy to peanuts 253 Z91011 Allergy to milk products 253 Z91012 Allergy to eggs 253 Z91013 Allergy to seafood 253 Z91018 Allergy to other foods 253 Z9102 Food additives allergy status 253 Z91030 Bee allergy status 253 Z91038 Other insect allergy status 253 Z91040 Latex allergy status 253 Z91041 Radiographic dye allergy status 253 Z91048 Other nonmedicinal substance allergy status 253 Z9109 Other allergy status, other than to drugs and biological substances 253 Children with any of these diagnosis codes were eliminated from the sample for analysis.

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SUPPLEMENTAL TABLE 6 Patient Visits Identified as Having Diagnoses as Defined by Pediatric CCC Classification and PMCA System Children With Chronic Disease and Children With Chronic Pneumonia (n = 1569) Disease and Sinusitis (n = 9413) Pneumonia Sinusitis CCC (n = 1015) PMCA (n = CCC (n = PMCA (n = 1313) 5127) 4755) Cardiac, cardiovascular 121 79 676 325 Craniofacial — 4 — 25 Dermatologic — 10 — 17 Endocrinological — 38 — 197 Gastrointestinal 97 42 384 116 Genetic 150 67 1020 187 Genitourinary — 8 — 60 Hematologic 202 57 683 125 Immunologic — 16 — 76 Malignancy 39 12 275 52 Mental health — 151 — 1101 Metabolic 96 39 806 171 Musculoskeletal — 54 — 171 Neonatal 50 — 138 — Neurologic — 206 — 789 Neuromuscular 177 — 766 — Pulmonary, respiratory 124 301 337 1325 Renal 53 30 254 119 Ophthalmologic — 24 — 126 Otologic — 31 — 98 Otolaryngological — 0 — 0 Technology dependent 122 — 314 — Transplant 1 — 1 — —, not applicable.

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