Properties
This code system defines the following properties for its concepts
| Name | Code | URI | Type | Description |
| Status | status | http://hl7.org/fhir/concept-properties#status | code | Designation of a concept's state. Normally is not populated unless the state is retired. |
Concepts
This case-sensitive code system http://terminology.hl7.org/CodeSystem/v3-ActRelationshipCheckpoint defines the following codes in a Is-A hierarchy:
| Code | Display | Definition | Status |
| B | beginning | Condition is tested every time before execution of the service (WHILE condition DO service). | active |
| E | end | Condition is tested at the end of a repeated service execution. The service is repeated only if the condition is true (DO service WHILE condition). | active |
| S | entry | Condition is tested once before the service is executed (IF condition THEN service). | active |
| T | through | Condition must be true throughout the execution and the service is interrupted (asynchronously) as soon as the condition turns false (asynchronous WHILE loop). The service must be interruptible. | active |
| X | exit | Condition is a loop checkpoint, i.e. it is a step of an activity plan and, if negative causes the containing loop to exit. | active |