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