Properties
| Name | Required | Type | Description |
|---|---|---|---|
| id | No | string | Unique id for inter-element referencing |
| extension | No | Extension[] | Additional content defined by implementations |
| use | No | code | usual / official / temp / secondary / old (If known) |
| type | No | CodeableConcept | Description of identifier |
| system | No | uri | The namespace for the identifier value |
| value | No | string | The value that is unique |
| period | No | Period | Time period when id is/was valid for use |
| assigner | No | Reference<Organization> | Organization that issued id (may be just text) |