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