| Code | Display | Definition | deprecated | V2 Concept Comment | V2 Concept Comment As Published |
| PREFSTART | The preferred start time for the appointment request, service or resource. Any legal time specification in the format HHMM, using 24-hour clock notation | The preferred start time for the appointment request, service or resource. Any legal time specification in the format HHMM, using 24-hour clock notation | 2.9 | | |
| Prefstart | An indicator that there is a preferred start time for the appointment request, service or resource. | An indicator that there is a preferred start time for the appointment request, service or resource. | | In component 2, specify any valid time in the format HHMM, using 24-hour clock notation where HH = hour and MM = minutes | In component 2, specify any valid time in the format HHMM, using 24-hour clock notation where HH = hour and MM = minutes |
| PREFEND | The preferred end time for the appointment request, service or resource. Any legal time specification in the format HHMM, using 24-hour clock notation | The preferred end time for the appointment request, service or resource. Any legal time specification in the format HHMM, using 24-hour clock notation | 2.9 | | |
| Prefend | An indicator that there is a preferred end time for the appointment request, service or resource. | An indicator that there is a preferred end time for the appointment request, service or resource. | | In component 2, specify any valid time in the format HHMM, using 24-hour clock notation where HH = hour and MM = minutes | In component 2, specify any valid time in the format HHMM, using 24-hour clock notation where HH = hour and MM = minutes |
| MON | An indicator that Monday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | An indicator that Monday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | 2.9 | | |
| Mon | An indicator that Monday is or is not preferred for the day on which the appointment will occur. | An indicator that Monday is or is not preferred for the day on which the appointment will occur. | | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred |
| TUE | An indicator that Tuesday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | An indicator that Tuesday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | 2.9 | | |
| Tue | An indicator that Tuesday is or is not preferred for the day on which the appointment will occur. | An indicator that Tuesday is or is not preferred for the day on which the appointment will occur. | | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred |
| WED | An indicator that Wednesday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | An indicator that Wednesday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | 2.9 | | |
| Wed | An indicator that Wednesday is or is not preferred for the day on which the appointment will occur. | An indicator that Wednesday is or is not preferred for the day on which the appointment will occur. | | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred |
| THU | An indicator that Thursday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | An indicator that Thursday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | 2.9 | | |
| Thu | An indicator that Thursday is or is not preferred for the day on which the appointment will occur. | An indicator that Thursday is or is not preferred for the day on which the appointment will occur. | | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred |
| FRI | An indicator that Friday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | An indicator that Friday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | 2.9 | | |
| Fri | An indicator that Friday is or is not preferred for the day on which the appointment will occur. | An indicator that Friday is or is not preferred for the day on which the appointment will occur. | | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred |
| SAT | An indicator that Saturday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | An indicator that Saturday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | 2.9 | | |
| Sat | An indicator that Saturday is or is not preferred for the day on which the appointment will occur. | An indicator that Saturday is or is not preferred for the day on which the appointment will occur. | | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred |
| SUN | An indicator that Sunday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | An indicator that Sunday is or is not preferred for the day on which the appointment will occur. OK = Preferred appointment day NO = Day is not preferred | 2.9 | | |
| Sun | An indicator that Sunday is or is not preferred for the day on which the appointment will occur. | An indicator that Sunday is or is not preferred for the day on which the appointment will occur. | | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred | In component 2, specify OK or NO.<p>OK = Preferred appointment day NO = Day is not preferred |
