description: This Contact is the preferred contact at this organization for the purpose of the contact There can be multiple contacts on an Organizations record with this value set to true, but these should all have different purpose values. package_name: hl7.fhir.r2b.examples derivation: constraint name: Preferred Contact type: null elements: extension: isModifier: false name: extension mustSupport: false maxLength: 0 base: {max: '0', min: 0, path: Extension.extension} isSummary: false index: 0 url: isModifier: false pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/organization-preferredContact'} type: uri mustSupport: false maxLength: 0 base: {max: '1', min: 0, path: Extension.url} isSummary: false index: 1 value: base: {max: '1', min: 0, path: 'Extension.value[x]'} isSummary: false maxLength: 0 isModifier: false mustSupport: false choices: [valueBoolean] index: 3 valueBoolean: isModifier: false index: 4 type: boolean mustSupport: false maxLength: 0 base: {max: '1', min: 0, path: 'Extension.value[x]'} choiceOf: value isSummary: false package_version: 1.4.0 extensions: {} class: datatype kind: datatype url: http://hl7.org/fhir/StructureDefinition/organization-preferredContact base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [value, valueBoolean]