This is the ValueSet that contains all the codes in Other Codes (https://www.ehealth.fgov.be/standards/fhir/pss/ValueSet/OtherCodes) and Other Codes (https://www.ehealth.fgov.be/standards/fhir/pss/ValueSet/OtherCodes). E.g. what you have to deal with if you get resources containing codes in either of them