description: A locally-produced identifier which uniquely identifies the referral record. All PROMs questionnaires associated with the same referral must have the same Referral Identifier.
package_name: fhir.r4.wales.psom
derivation: constraint
name: DataStandardsWalesPSOMReferralIdentifier
type: Identifier
elements:
  system:
    short: Referral Identifier Origination
    constraint:
      PSOM-ReferralIdentifier-01: {human: The issuing system should be an ApplicationInstanceOID that starts with the '2.16.840.1.113883.2.1.8.1.5.' sequence., severity: error, expression: 'startsWith(''urn:oid:2.16.840.1.113883.2.1.8.1.5.'')'}
    index: 0
  value: {short: Referral Identifier, index: 1}
package_version: 1.0.0-rc3
class: complex-type
kind: complex-type
url: https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-PSOM-ReferralIdentifier
base: http://hl7.org/fhir/StructureDefinition/Identifier
version: null
required: [value]