| # | Name | Source | Ver | Description | |
| 1 | ATR Any Resource Extension | hl7.fhir.us.davinci-atr#current | R4 | Specifies a resource that are associated with the member of the Group. | |
| 2 | ATR Intended Recipient Identifier Extension | hl7.fhir.us.davinci-atr#current | R4 | Specifies the Identifier of the entity that is going to be using the group. | |
| 3 | Attributed Provider | hl7.fhir.us.davinci-atr#current | R4 | Indicates the attributed provider. | |
| 4 | Characteristic Expression | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | An expression that defines the criteria for group membership. This extension can only be used on a Group resource with a membership of `definitional`. When this expression is used, the Group resource cannot have any characteristic elements; this mechanism is exclusive with characteristics. The result of the expression SHALL be boolean-valued. The expression SHALL be parameterized with a `%context` variable that represents the subject being tested for membership. If evaluation of the expression results in `true`, the subject is considered a member of the group. | |
| 5 | Contract Validity Period | hl7.fhir.us.davinci-atr#current | R4 | Indicates the validity period for Contract which is the basis for the Member Attribution List. | |
| 6 | Coverage Reference | hl7.fhir.us.davinci-atr#current | R4 | Indicates the Coverage assocaited with the member placing them on the attribution list. | |
| 7 | Group Member Change Information | hl7.fhir.us.davinci-atr#current | R4 | changeType can be new (member added), dropped (member removed), changed (member information has changed), nochange (no change in member information since group was created). |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | |
| Extension | C D | C D | C D | C D | C D | C D | C D |
| Extension.extension | C | ||||||
| Extension.url | F | F | F | F | F | F | F |
| Extension.value[x] | C | C | C | B M |
Produced 06 Apr 2023