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