http://hl7.org/fhir/StructureDefinition/specimen-specialHandling|5.2.0

Special handling during the collection, transport, or storage of the specimen.
typedestination
baseDefinitionhttp://hl7.org/fhir/StructureDefinition/Extension
typehttp://hl7.org/fhir/StructureDefinition/Extension
Extension.value[x].typehttp://hl7.org/fhir/StructureDefinition/CodeableConcept