| Vocabulary Type | Code System - Universal |
| Concept Domain | DateTime Selection Qualifier |
| Code System Name | |
| Code System Identifier | |
| Code System OID | |
| HL7 Table Identifier | HL70158 |
| Version | |
| Status | Active |
| Where Used | |
| Purpose and Use | HL7-defined table of codes that allow the specification of certain types of values within the date/time range. |
| Code | Display | Definition | Deprecated |
|---|---|---|---|
| 1ST | First value within range | First value within range | |
| ALL | All values within the range | All values within the range | |
| LST | Last value within the range | Last value within the range | |
| REV | All values within the range returned in reverse chronological order (This is the default if not otherwise specified.) | All values within the range returned in reverse chronological order (This is the default if not otherwise specified.) |