This is the ValueSet that contains all the codes in CH AllergyIntolerance (http://fhir.ch/ig/ch-allergyintolerance/ValueSet/CHAllergyIntoleranceValueSet) and CH AllergyIntolerance (http://fhir.ch/ig/ch-allergyintolerance/ValueSet/CHAllergyIntoleranceValueSet). E.g. what you have to deal with if you get resources containing codes in either of them