description: Medication that when taken affecting the factor package_name: hl7.fhir.uv.symptoms derivation: constraint name: SurroundingEventMedication type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/symptoms/StructureDefinition/SurroundingEventMedication'} index: 1 value: choices: [valueReference] index: 3 valueReference: type: Reference choiceOf: value refers: ['http://hl7.org/fhir/StructureDefinition/MedicationStatement'] index: 4 package_version: 1.0.0-ballot extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/uv/symptoms/StructureDefinition/SurroundingEventMedication base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0-ballot