This is the ValueSet that contains codes in both ActMedicationTherapyDurationWorkingListCode (http://terminology.hl7.org/ValueSet/v3-ActMedicationTherapyDurationWorkingListCode) and ActMedicationTherapyDurationWorkingListCode (http://terminology.hl7.org/ValueSet/v3-ActMedicationTherapyDurationWorkingListCode).