| Value | Code Name | Code | Code System | Code Description |
|---|---|---|---|---|
| < 8 days before current stroke/TIA | < 8 days before current stroke/TIA | < 8 days before current stroke/TIA | ||
| 8 days - 4 weeks ago | 8 days - 4 weeks ago | 8 days - 4 weeks ago | ||
| > 4 weeks ago | > 4 weeks ago | > 4 weeks ago | ||
| Unknown | Unknown | Unknown |