description: The actual performer in an appointment, eg. teacher in a group class package_name: dk.ehealth.sundhed.fhir.ig.core derivation: constraint name: ehealth-performer type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://ehealth.sundhed.dk/fhir/StructureDefinition/ehealth-performer'} type: uri index: 1 value: choices: [valueReference] index: 3 valueReference: type: Reference choiceOf: value refers: ['http://ehealth.sundhed.dk/fhir/StructureDefinition/ehealth-careteam', 'http://ehealth.sundhed.dk/fhir/StructureDefinition/ehealth-practitioner'] index: 4 package_version: 5.0.0 extensions: {} class: extension kind: complex-type url: http://ehealth.sundhed.dk/fhir/StructureDefinition/ehealth-performer base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.0.0