<status value="draft" /> <date value="2018-03-06" /> <description value="Vaccination validity in years or period of coverage" /> <fhirVersion value="3.0.1" /> <kind value="primitive-type" /> <abstract value="false" /> <contextType value="resource" /> <context value="Immunization" /> <context value="Immunization.vaccinationProtocol" /> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <short value="Vaccination validity" /> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <slicing> <discriminator> <type value="value" /> <path value="url" /> </discriminator> <rules value="open" /> </slicing> </element> <element id="Extension.extension:validityYearsMonthsDays"> <path value="Extension.extension" /> <sliceName value="validityYearsMonthsDays" /> <short value="Validity of this vaccination in years, months or days" /> <max value="1" /> </element> <element id="Extension.extension:validityYearsMonthsDays.url"> <path value="Extension.extension.url" /> <fixedUri value="validityYearsMonthsDays" /> </element> <element id="Extension.extension:validityYearsMonthsDays.valueQuantity:valueQuantity"> <path value="Extension.extension.valueQuantity" /> <sliceName value="valueQuantity" /> <type> <code value="Quantity" /> </type> </element> <element id="Extension.extension:validityYearsMonthsDays.valueQuantity:valueQuantity.comparator"> <path value="Extension.extension.valueQuantity.comparator" /> <max value="0" /> </element> <element id="Extension.extension:validityPeriod"> <path value="Extension.extension" /> <sliceName value="validityPeriod" /> <max value="1" /> </element> <element id="Extension.extension:validityPeriod.url"> <path value="Extension.extension.url" /> <fixedUri value="validityPeriod" /> </element> <element id="Extension.extension:validityPeriod.valuePeriod:valuePeriod"> <path value="Extension.extension.valuePeriod" /> <sliceName value="valuePeriod" /> <type> <code value="Period" /> </type> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="http://hl7.org/fhir/ips/StructureDefinition/vaccinationvalidity-immunization-uv-ips" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <max value="0" /> <type> <code value="base64Binary" /> </type> <type> <code value="boolean" /> </type> <type> <code value="code" /> </type> <type> <code value="date" /> </type> <type> <code value="dateTime" /> </type> <type> <code value="decimal" /> </type> <type> <code value="id" /> </type> <type> <code value="instant" /> </type> <type> <code value="integer" /> </type> <type> <code value="markdown" /> </type> <type> <code value="oid" /> </type> <type> <code value="positiveInt" /> </type> <type> <code value="string" /> </type> <type> <code value="time" /> </type> <type> <code value="unsignedInt" /> </type> <type> <code value="uri" /> </type> <type> <code value="Address" /> </type> <type> <code value="Age" /> </type> <type> <code value="Annotation" /> </type> <type> <code value="Attachment" /> </type> <type> <code value="CodeableConcept" /> </type> <type> <code value="Coding" /> </type> <type> <code value="ContactPoint" /> </type> <type> <code value="Count" /> </type> <type> <code value="Distance" /> </type> <type> <code value="Duration" /> </type> <type> <code value="HumanName" /> </type> <type> <code value="Identifier" /> </type> <type> <code value="Money" /> </type> <type> <code value="Period" /> </type> <type> <code value="Quantity" /> </type> <type> <code value="Range" /> </type> <type> <code value="Ratio" /> </type> <type> <code value="Reference" /> </type> <type> <code value="SampledData" /> </type> <type> <code value="Signature" /> </type> <type> <code value="Timing" /> </type> </element> </differential> </StructureDefinition>