# | Name | Source | Ver | Description | |
1 | Period duration | hl7.fhir.uv.extensions.r4#1.0.0 | R4 | Specifies the duration of the period, based on the starting date, rather than specifying the end date of the period. |
1 | |
Extension | C D |
Extension.extension | C |
Extension.url | F |
Extension.value[x] | C |
Produced 06 Apr 2023