This is the ValueSet that contains all the codes in Period UnitsOfTime dgMP ValueSet (http://ig.fhir.de/igs/medication/ValueSet/PeriodUnitsOfTimeDgMP) and Period UnitsOfTime dgMP ValueSet (http://ig.fhir.de/igs/medication/ValueSet/PeriodUnitsOfTimeDgMP). E.g. what you have to deal with if you get resources containing codes in either of them