This is the ValueSet that contains all the codes in ActRelationshipHasCost (http://terminology.hl7.org/ValueSet/v3-ActRelationshipHasCost) and ActRelationshipHasCost (http://terminology.hl7.org/ValueSet/v3-ActRelationshipHasCost). E.g. what you have to deal with if you get resources containing codes in either of them