description: 'In NHS Englands Spine Directory Service this is the uid in the nhsPerson object.\r\n \r\n This is also [SmartCard UUID](https://digital.nhs.uk/services/care-identity-service/smartcard-and-authentication-users)\r\n \r\n MISSING formal definition of this type\r\n \r\n HL7 v3/OID: 1.2.826.0.1285.0.2.0.65' package_name: fhir.r4.nhsengland.programme derivation: constraint name: EnglandIdentifierSDSUserId type: Identifier elements: system: pattern: {type: uri, value: 'https://fhir.nhs.uk/Id/sds-user-id'} type: uri index: 0 value: {index: 1} package_version: 0.2.2-pre-release class: complex-type kind: complex-type url: https://fhir.nhs.uk/England/StructureDefinition/England-Identifier-SDS-User-Id base: http://hl7.org/fhir/StructureDefinition/Identifier version: 0.0.1-current required: [system, value]