<status value="active" /> <experimental value="false" /> <date value="2019-10-21T20:21:39.354284+00:00" /> <publisher value="National Comprehensive Cancer Network, Inc." /> <contact> <telecom> <system value="url" /> <value value="https://www.nccn.org/about/contact.aspx" /> <use value="work" /> </telecom> </contact> <description value="A code to denote the preferred unit when referring to the cycle period of this regimen." /> <copyright value="National Comprehensive Cancer Network, Inc. (c) 2017. All right reserved." /> <fhirVersion value="3.0.1" /> <kind value="complex-type" /> <abstract value="false" /> <contextType value="resource" /> <context value="ActivityDefinition.dosage.countUnits" /> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <short value="Day on which the medication/agent is to be administered." /> <definition value="A code to denote the preferred unit when referring to the cycle period of this regimen." /> <comment value="The units in which the regimen length is defined (i.e. number of cycles vs number of doses)" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="http://ots.nccn.org/hl7/fhir/StructureDefinition/countUnits" /> </element> <element id="Extension.value[x]:valueCode"> <path value="Extension.valueCode" /> <sliceName value="valueCode" /> <type> <code value="code" /> </type> </element> </differential> </StructureDefinition>