This is the ValueSet that contains all the codes in PCT Diagnosis Type Value Set (http://hl7.org/fhir/us/davinci-pct/ValueSet/PCTDiagnosisTypeVS) and PCT Diagnosis Type Value Set (http://hl7.org/fhir/us/davinci-pct/ValueSet/PCTDiagnosisTypeVS). E.g. what you have to deal with if you get resources containing codes in either of them