description: Communications captures what communications have been made with other care providers package_name: hl7.fhir.cz.img derivation: constraint name: HL7IDRCommunicationExt type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://hl7.cz/fhir/img/StructureDefinition/HL7IDRCommunication'} index: 1 value: choices: [valueReference] index: 3 valueReference: {type: Reference, choiceOf: value, index: 4} package_version: 1.0.0 extensions: {} class: extension kind: complex-type url: https://hl7.cz/fhir/img/StructureDefinition/HL7IDRCommunication base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0