description: Flag indicating if the specialty is the primary specialty of the provider. Normally, a practitioner will have one primary specialty, but in some cases more than one can be primary. package_name: hl7.fhir.r5.examples derivation: constraint name: primaryInd type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/organizationaffiliation-primaryInd'} index: 1 value: choices: [valueBoolean] index: 3 valueBoolean: {type: boolean, choiceOf: value, index: 4} package_version: 4.5.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/organizationaffiliation-primaryInd base: http://hl7.org/fhir/StructureDefinition/Extension version: 4.5.0 required: [value, valueBoolean]