This is the ValueSet that contains all the codes in ePI document types (http://hl7.org/fhir/uv/emedicinal-product-info/ValueSet/epiType) and ePI document types (http://hl7.org/fhir/uv/emedicinal-product-info/ValueSet/epiType). E.g. what you have to deal with if you get resources containing codes in either of them