| Code | Display | Definition |
| user | Sorted by User | The list was sorted by a user. The criteria the user used are not specified. |
| system | Sorted by System | The list was sorted by the system. The criteria the user used are not specified; define additional codes to specify a particular order (or use other defined codes). |
| event-date | Sorted by Event Date | The list is sorted by the data of the event. This can be used when the list has items which are dates with past or future events. |
| entry-date | Sorted by Item Date | The list is sorted by the date the item was added to the list. Note that the date added to the list is not explicit in the list itself. |
| priority | Sorted by Priority | The list is sorted by priority. The exact method in which priority has been determined is not specified. |
| alphabetic | Sorted Alphabetically | The list is sorted alphabetically by an unspecified property of the items in the list. |
| category | Sorted by Category | The list is sorted categorically by an unspecified property of the items in the list. |
| patient | Sorted by Patient | The list is sorted by patient, with items for each patient grouped together. |
