This value set includes codes based on the following rules:
http://terminology.hl7.org/CodeSystem/v3-GTSAbbreviation| Code | Display | Definition |
| AM | AM | Every morning at institution specified times. |
| BID | BID | Two times a day at institution specified time |
| JB | JB | Regular business days (Monday to Friday excluding holidays) |
| JE | JE | Regular weekends (Saturday and Sunday excluding holidays) |
| PM | PM | Every afternoon at institution specified times. |
| QID | QID | Four times a day at institution specified time |
| TID | TID | Three times a day at institution specified time |