This is the ValueSet that contains all the codes in Claim Exemption Code (https://www.ehealth.fgov.be/standards/fhir/nihdi-terminology/ValueSet/be-vs-claim-exemption-code) and Claim Exemption Code ValueSet (https://www.ehealth.fgov.be/standards/fhir/nihdi-terminology/ValueSet/be-vs-claim-exemption-code). E.g. what you have to deal with if you get resources containing codes in either of them