This is the ValueSet that contains all the codes in Types of rating provided by the PSS system (https://www.ehealth.fgov.be/standards/fhir/pss/ValueSet/PSSRatingTypesVS) and Types of rating provided by the PSS system (https://www.ehealth.fgov.be/standards/fhir/pss/ValueSet/PSSRatingTypesVS). E.g. what you have to deal with if you get resources containing codes in either of them