|
Inclusion criteria used to identify adult-onset asthma cases* |
||
| Criteria |
ICD-9 (CPT) Codes† |
|
|
|
||
| 1 |
Asthma diagnosis AND outpatient nebulization treatment |
493–493.91 AND (94640) |
| 2 |
Any asthma diagnosis AND ordered oral steroids |
493–493.91 |
| 3 |
Any asthma diagnosis AND a second line medication‡ |
493–493.91 |
| 4 |
ER visit OR hospital admission for primary asthma diagnosis |
493–493.91 |
| 5 |
Asthma diagnosis AND ≥ 2 MDIs¶ |
493–493.91 |
| 6 |
Occupational asthma diagnosis |
504–507, 495.8, 507.8 |
|
* Inclusion criteria were applied to records during the index month, † ‡ ¶See Table 1 | ||
Sama et al. Environmental Health: A Global Access Science Source 2003 2:10 doi:10.1186/1476-069X-2-10 |
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