This is the ValueSet that contains all the codes in Coded Annotation Types (https://www.ehealth.fgov.be/standards/fhir/lab/ValueSet/be-vs-coded-annotation-types) and Coded Annotation Types (https://www.ehealth.fgov.be/standards/fhir/lab/ValueSet/be-vs-coded-annotation-types). E.g. what you have to deal with if you get resources containing codes in either of them