This is the ValueSet that contains all the codes in DEQM Update Type Value Set (http://hl7.org/fhir/uv/deqm/ValueSet/deqm-update-type) and DEQM Update Type Value Set (http://hl7.org/fhir/uv/deqm/ValueSet/deqm-update-type). E.g. what you have to deal with if you get resources containing codes in either of them