External reference pricing
Countries using external reference pricing (ERP) for medications cost-containment policies in 2018 or latest data. Categories of medications include generics, patented, reimbursed-only or imported medicines.
 
  ERP used as main criterion for at least one category of medications
   ERP as at least a supportive information
   Unknown criteria
   Experimental or informal use of ERP
   Not using ERP
   Using internal reference pricing
External reference pricing (ERP), also known as international reference pricing, is the practice of regulating the price of a medication in one country, by comparing with the price in a "basket" of other reference countries. It contrasts with internal reference pricing, where the price of one drug is compared to the domestic price of therapeutically related drugs, and with cost-plus pricing, where the price involves negotiating an acceptable markup to the unit cost to develop and produce.: 300