This is the ValueSet that contains all the codes in DNA Change Type (http://hl7.org/fhir/uv/genomics-reporting/ValueSet/dna-change-type-vs) and DNA Change Type (http://hl7.org/fhir/uv/genomics-reporting/ValueSet/dna-change-type-vs). E.g. what you have to deal with if you get resources containing codes in either of them