This code system http://terminology.hl7.org/CodeSystem/handling-condition defines the following codes:

CodeDisplayDefinition
room room temperatureroom temperature.
refrigerated refrigeratedrefrigerated temperature.
frozen frozenfrozen temperature.
 <status value="draft"/> <experimental value="false"/> <date value="2020-04-09T21:10:28+00:00"/> <publisher value="HL7 (FHIR Project)"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org/fhir"/> </telecom> <telecom> <system value="email"/> <value value="fhir@lists.hl7.org"/> </telecom> </contact> <description value="Set of handling instructions prior testing of the specimen."/> <caseSensitive value="true"/> <valueSet value="http://terminology.hl7.org/ValueSet/handling-condition"/> <content value="complete"/> <concept> <code value="room"/> <display value="room temperature"/> <definition value="room temperature."/> </concept> <concept> <code value="refrigerated"/> <display value="refrigerated"/> <definition value="refrigerated temperature."/> </concept> <concept> <code value="frozen"/> <display value="frozen"/> <definition value="frozen temperature."/> </concept> </CodeSystem>