Table 2. ICD-10-AM hospital admission codes used to identify and categorize underlying conditions and construct a comorbidity score for each person included in a study of SARS-CoV-2 vaccine effectiveness, Western Australia, Australia, 2022*.
| Underlying condition category | ICD-10-AM codes |
|---|---|
| Respiratory disease | J40–J47; J81; J84; E84 |
| Diabetes | E10–E14 |
| Anemia/splenic issues | D50–D59; D60–D63; D73 |
| Down syndrome | Q90 |
| Cancer | C00–C97 excl C44 |
| Kidney disease | N18–N19; N00–N16; N25–N29 |
| Immunocompromise | D80–D89; B24 |
| Dementia | F00–F03; G30 |
| Cardiac disease incl hypertension and arrhythmia | I20–I28; I05–I10; I47–I50 |
| Stroke/TIA | G45; H34; I60–I69 |
| Liver disease | K71–K77 |
| Obesity | E66 |
| Rheumatoid arthritis | M05–M06 |
| Ulcerative colitis/Crohn’s disease | K50–K51 |
*ICD-10-AM, International Statistical Classification of Diseases and Related Health Problems, Tenth Revision, Australian Modification; TIA, transient ischemic attack.