description: This extension to PlanDefinition conveys the textual summary of the regulations impacting the laboratory service represented by the PlanDefinition instance. package_name: hl7.fhir.uv.order-catalog derivation: constraint name: RegulatorySummary type: Extension elements: url: pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/order-catalog/StructureDefinition/RegulatorySummary'} index: 0 value: choices: [valueString] index: 2 valueString: {type: string, choiceOf: value, index: 3} package_version: 1.0.0 class: extension kind: complex-type url: http://hl7.org/fhir/uv/order-catalog/StructureDefinition/RegulatorySummary base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0