| # | Name | Source | Ver | Description | |
| 1 | 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. | |
| 2 | Event history | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Links to *Provenance* records for past versions of this resource that document key state transitions or updates that are deemed "relevant" or important to a user looking at the current version of the resource. E.g, when an observation was verified or corrected. This extension does not point to the Provenance associated with the current version of the resource - as it would be created after this version existed. The *Provenance* for the current version can be retrieved with a [` _revinclude`](search.html#revinclude). | |
| 3 | Procedure Approach Body Structure | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | The approach body site used for this procedure. Multiple locations are allowed. | |
| 4 | 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. | |
| 5 | Research study | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Indicates that this event is relevant to the specified research study(ies). | |
| 6 | Status reason | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Captures the reason for the current state of the resource. |
| 1 | 2 | 3 | 4 | 5 | 6 | |
| Extension | C D | C D | C D | C D | C D | C D |
| Extension.extension | C | C | C | C | C | C |
| Extension.url | F | F | F | F | F | F |
| Extension.value[x] | C | C | C | C | C | C B M |
Produced 06 Apr 2023