This is the CodeSystem that contains all the codes in WOF Connect Service Types (http://canonical.fhir.link/servicewell/wof-connect/CodeSystem/cs-service-type) and WOF Connect Service Types (http://canonical.fhir.link/servicewell/wof-connect/CodeSystem/cs-service-type). E.g. what you have to deal with if you get resources containing codes in either of them