id
Base StructureDefinition for id type: Any combination of letters, numerals, "-" and ".", with a length limit of 64 characters. (This might be an integer, an unprefixed OID, UUID or any other identifier pattern that meets these constraints.) Ids are case-insensitive.
Primitive data type in FHIR R4. Maturity: Not stated.
Elements
| Element | Type | Cardinality | Description |
|---|---|---|---|
id | string | 0..1 | xml:id (or equivalent in JSON) |
extension | Extension | 0..* | Additional content defined by implementations |
value | string | 0..1 | Primitive value for id |
Reference
Official FHIR R4 specification: id.