This is the ValueSet that contains all the codes in Device Type Specialization IEEE 11073-10101 Nomenclature Codes (http://hl7.org/fhir/uv/phd/ValueSet/DeviceTypes11073MDC) and MDC Device Specialization codes (http://hl7.org/fhir/uv/phd/ValueSet/DeviceTypes11073MDC). E.g. what you have to deal with if you get resources containing codes in either of them