This is the ValueSet that contains all the codes in ObservationInterpretationNormalityHigh (http://terminology.hl7.org/ValueSet/v3-ObservationInterpretationNormalityHigh) and ObservationInterpretationNormalityHigh (http://terminology.hl7.org/ValueSet/v3-ObservationInterpretationNormalityHigh). E.g. what you have to deal with if you get resources containing codes in either of them