Table 2 Frequency of different diagnosis codes
From: Which ICD-9-CM codes should be used for bronchiolitis research?
Aged ≤6 months | Aged ≤12 months | Aged ≤24 months | |
|---|---|---|---|
Broad Diagnosis | 18, 773 (100) | 35, 645 (100) | 48, 269 (100) |
Bronchospasm codes | 556 (3.0) | 971 (2.7) | 1291 (2.7) |
Asthma codes | 8714 (46.4) | 17, 200 (48.3) | 24, 197 (50.1) |
Bronchiolitis codes | 5420 (28.9) | 9367 (26.3) | 11, 367 (23.6) |
Bronchitis codes | 4083 (21.8) | 8107 (22.7) | 11, 414 (23.6) |
Narrow Diagnosis | 9503 (50.6) | 17, 474 (49.0) | 22, 781 (47.2) |
Bronchiolitis codes | 5420 (28.9) | 9367 (26.3) | 11, 367 (23.6) |
Bronchitis codes | 4083 (21.8) | 8107 (22.7) | 11, 414 (23.6) |