Intersection of http://hl7.org/fhir/ValueSet/c80-doc-typecodes and http://hl7.org/fhir/us/core/ValueSet/us-core-documentreference-type
This is the ValueSet that contains codes in both Document Type Value Set (http://hl7.org/fhir/ValueSet/c80-doc-typecodes) and US Core DocumentReference Type (http://hl7.org/fhir/us/core/ValueSet/us-core-documentreference-type).