| Membership Code | Concept Code | Description | Code System | Code System Version |
|---|---|---|---|---|
| CD | CD | day (continuous) | CalendarCycle | 2.01.4 |
| CH | CH | hour (continuous) | CalendarCycle | 2.01.4 |
| CM | CM | month (continuous) | CalendarCycle | 2.01.4 |
| CN | CN | minute (continuous) | CalendarCycle | 2.01.4 |
| CS | CS | second (continuous) | CalendarCycle | 2.01.4 |
| CW | CW | week (continuous) | CalendarCycle | 2.01.4 |
| CY | CY | year | CalendarCycle | 2.01.4 |
| DM | DM | day of the month | CalendarCycle | 2.01.4 |
| DW | DW | day of the week (begins with Monday) | CalendarCycle | 2.01.4 |
| DY | DY | day of the year | CalendarCycle | 2.01.4 |
| HD | HD | hour of the day | CalendarCycle | 2.01.4 |
| MY | MY | month of the year | CalendarCycle | 2.01.4 |
| NH | NH | minute of the hour | CalendarCycle | 2.01.4 |
| SN | SN | second of the minute | CalendarCycle | 2.01.4 |
| WY | WY | week of the year | CalendarCycle | 2.01.4 |