description: This extension has been constrained to represent a link to a Patient resource for a Related Person, to support the Digital Child Health project. package_name: NHSD.Assets.STU3 derivation: constraint name: Extension-DCH-Link-1 type: Extension elements: url: pattern: {type: Uri, value: 'https://fhir.nhs.uk/STU3/StructureDefinition/Extension-DCH-Link-1'} index: 0 valueReference: type: Reference short: Link to a Patient resource for a Related Person refers: ['https://fhir.nhs.uk/STU3/StructureDefinition/CareConnect-DCH-Patient-1'] index: 1 slicing: slices: valueReference: match: {} schema: type: Reference short: Link to a Patient resource for a Related Person refers: ['https://fhir.nhs.uk/STU3/StructureDefinition/CareConnect-DCH-Patient-1'] _required: true index: 1 min: 1 package_version: 1.0.0 class: extension kind: complex-type url: https://fhir.nhs.uk/STU3/StructureDefinition/Extension-DCH-Link-1 base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0 required: [valueReference]