| # | | Name | Source | Ver | Description |
| 1 | | Complies with | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | The action requested by this resource is intended to satisfy the expectations established by the referenced Definition resource. |
| 2 | | Days of cycle | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Days of a possibly repeating cycle on which the action is to be performed. The cycle is defined by the first action with a timing element that is a parent of the daysOfCycle. |
| 3 | | Episode of care | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Identifies the episode(s) of care that this resource is relevant to. Establishes the EpisodeOfCare as a 'grouper' of resources that are relevant to that episode. |
| 4 | | Generated from | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | This artifact was algorithmically produced by applying the referenced artifact to the context relevant for this request. |
| 5 | | Release date | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Indicates the date on which request or event resource that has a status of 'on-hold' or 'suspended' should be moved back to an active state. |
| 6 | | Triggered by | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | This resource came into being as a result of expectations set in the referenced Definition resource. I.e. This resource represents a 'step' dictated within the protocol/order set/etc. |
| 7 | | Variable | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Variable specifying a logic to generate a variable for use in subsequent logic. The name of the variable will be added to FHIRPath's context when processing descendants of the element that contains this extension as well as extensions within the same element. |
| 8 | | Variable | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Variable specifying a logic to generate a variable for use in subsequent logic. The name of the variable will be added to FHIRPath's context when processing descendants of the element that contains this extension as well as extensions within the same element. |
| 9 | | Variable | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Variable specifying a logic to generate a variable for use in subsequent logic. The name of the variable will be added to FHIRPath's context when processing descendants of the element that contains this extension as well as extensions within the same element. |