description: Extension defined by the IPS project to describe the abatement date for allergies package_name: ca.on.ehr.r4 derivation: constraint name: AbatementDateTimeUvIps type: Extension elements: url: pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/ips/StructureDefinition/abatement-dateTime-uv-ips'} mustSupport: true index: 0 valueDateTime: {type: dateTime, mustSupport: true, index: 1} package_version: 1.0.0-snapshot4 class: extension kind: complex-type url: http://hl7.org/fhir/uv/ips/StructureDefinition/abatement-dateTime-uv-ips base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.1.0