This is the CodeSystem that contains all the codes in CH ELM FOPH Code Reserve (urn:oid:2.16.756.5.30.1.129.1.5.1) and CH ELM FOPH Code Reserve (urn:oid:2.16.756.5.30.1.129.1.5.1). E.g. what you have to deal with if you get resources containing codes in either of them