Table 1.
ICD-9 codes used to define more restrictive and more inclusive sets associated with the CHADS2 conditions. TIA: transient ischemic attack
| CHADS2 condition | More restrictive set | More inclusive set |
|---|---|---|
| Congestive heart failure | 428.x | 428.x, 398.91, 402.01, 402.11, 402.91, 404.01, 404.11, 404.03, 404.13, 404.91, 404.93 |
| Hypertension | 401.x, 402.x, 403.x, 404.x, 405.x | 401.x, 402.x, 403.x, 404.x, 405.x, 437.2 |
| Diabetes | 250.x | 250.x, 357.2, 362.0, 366.41 |
| Stroke and TIA | 433.x1,* 434.x1,* 435.x* | 433.x1, 434.x1, 435.x, 436, 438.x |
*
Assessed using only inpatient data