This is the ValueSet that contains all the codes in CH ELM Lab Study Types (http://fhir.ch/ig/ch-elm/ValueSet/ch-elm-lab-study-types) and CH ELM Lab Study Types (http://fhir.ch/ig/ch-elm/ValueSet/ch-elm-lab-study-types). E.g. what you have to deal with if you get resources containing codes in either of them