| # | Name | Source | Ver | Description | |
| 1 | Argonaut SearchParameter Multiple AND Extension | fhir.argonaut.questionnaire#1.0.0 | R3 | Whether multiple parameters are allowed - e.g. more than one parameter with the same name. The search matches if all the parameters match. | |
| 2 | Argonaut SearchParameter Multiple OR Extension | fhir.argonaut.questionnaire#1.0.0 | R3 | Whether multiple values are allowed for each time the parameter exists. Values are separated by commas, and the parameter matches if any of the values match. | |
| 3 | Replaces | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | This indicates a separate conformance resource instance that is superseded by the current instance. | |
| 4 | Resource Approval Date | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | The date on which the asset content was approved by the publisher. Approval happens once when the content is officially approved for usage. | |
| 5 | Resource Effective Period | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | The period during which the resource content was or is planned to be effective. | |
| 6 | Resource Last Review Date | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | The date on which the asset content was last reviewed. Review happens periodically after that, but doesn't change the original approval date. |
| 1 | 2 | 3 | 4 | 5 | 6 | |
| Extension | C D | C D | C D | C D | C D | C D |
| Extension.valueBoolean | ||||||
| Extension.extension | C | C | C | C | ||
| Extension.url | F | F | F | F | F | F |
| Extension.value[x] | C | C | C | C |
Produced 06 Apr 2023