This is the ValueSet that contains all the codes in PROM Target Measure Scores (http://hl7.org/fhir/us/pco/ValueSet/prom-target-measures) and PROM Target Measure Scores (http://hl7.org/fhir/us/pco/ValueSet/prom-target-measures). E.g. what you have to deal with if you get resources containing codes in either of them