Identifier
Base StructureDefinition for Identifier Type: An identifier - identifies some entity uniquely and unambiguously. Typically this is used for business identifiers.
Complex data type in FHIR R4. Maturity: Not stated.
Elements
| Element | Type | Cardinality | Description |
|---|---|---|---|
id | string | 0..1 | Unique id for inter-element referencing |
extension | Extension | 0..* | Additional content defined by implementations |
use | code | 0..1 | usual | official | temp | secondary | old (If known) |
type | CodeableConcept | 0..1 | Description of identifier |
system | uri | 0..1 | The namespace for the identifier value |
value | string | 0..1 | The value that is unique |
period | Period | 0..1 | Time period when id is/was valid for use |
assigner | Reference | 0..1 | Organization that issued id (may be just text) |
Reference
Official FHIR R4 specification: Identifier.