<status value="retired" /> <date value="2021-09-10" /> <publisher value="HL7 UK" /> <contact> <name value="HL7 UK" /> <telecom> <system value="email" /> <value value="secretariat@hl7.org.uk" /> <use value="work" /> <rank value="1" /> </telecom> </contact> <contact> <name value="NHS Digital" /> <telecom> <system value="email" /> <value value="interoperabilityteam@nhs.net" /> <use value="work" /> <rank value="2" /> </telecom> </contact> <description value="The date and time that the dosage instructions were last changed." /> <purpose value="This extension extends the MedicationStatement resource to support the exchange of the information about the date and time that the medication dosage instructions were last changed, which is currently not supported by the FHIR standard." /> <copyright value="Copyright © 2021+ HL7 UK Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. HL7® FHIR® standard Copyright © 2011+ HL7 The HL7® FHIR® standard is used under the FHIR license. You may obtain a copy of the FHIR license at https://www.hl7.org/fhir/license.html." /> <fhirVersion value="4.0.1" /> <mapping> <identity value="rim" /> <uri value="http://hl7.org/v3" /> <name value="RIM Mapping" /> </mapping> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="MedicationStatement" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <short value="The date when the dosage instructions were last changed." /> <definition value="The date when the dosage instructions were last changed." /> <max value="1" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="https://fhir.hl7.org.uk/StructureDefinition/Extension-UKCore-MedicationDosageLastChanged" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <min value="1" /> <type> <code value="dateTime" /> </type> </element> </differential> </StructureDefinition>