http://hl7.org/fhir/StructureDefinition/observation-specimenCode|4.0.1

A code representing the the type of specimen used for this observation. Should only be used if not implicit in the code found in `Observation.code`.
typedestination
baseDefinitionhttp://hl7.org/fhir/StructureDefinition/Extension
typehttp://hl7.org/fhir/StructureDefinition/Extension
Extension.value[x].typehttp://hl7.org/fhir/StructureDefinition/CodeableConcept
Extension.value[x].binding.valueSethttp://terminology.hl7.org/ValueSet/v2-0487