http://hl7.org/fhir/StructureDefinition/composition-clinicaldocument-versionNumber|4.0.1
Version specific identifier for the composition, assigned when each version is created/updated.
| Name | Flags | Card | Type | Description & Constraints | 
|---|---|---|---|---|
| 
Extension | 0..1 | Version-specific identifier for composition | ||
| ?..0 | ||||
| ?..? | ||||
| 1..? | ||||
| 1..? | string |