This is the ValueSet that contains all the codes in SNOMED CT Reason Medication Not Given Codes (http://hl7.org/fhir/ValueSet/reason-medication-not-given-codes) and SNOMED CT Reason Medication Not Given Codes (http://hl7.org/fhir/ValueSet/reason-medication-not-given-codes). E.g. what you have to deal with if you get resources containing codes in either of them