This is the ValueSet that contains all the codes in UZCore Data Absent Reason (https://terminology.dhp.uz/fhir/core/ValueSet/data-absent-reason-vs) and UZCore Data Absent Reason (https://terminology.dhp.uz/fhir/core/ValueSet/data-absent-reason-vs). E.g. what you have to deal with if you get resources containing codes in either of them