Most Favored Nation Model Interim Final Rule Executive Summary

On Friday, November 20, 2020, the Center for Medicare & Medicaid Innovation released the “Most Favored Nations” (MFN) interim final rule that changes how CMS will pay for selected, separately payable Part B drugs. The MFN will test paying Part B drugs at comparable amounts to the lowest adjusted price paid by any country in the Organisation for Economic Co-operation and Development whose gross domestic product is comparable to the United States. Initially, the model focuses on a set of 50 separately payable Medicare Part B drugs that encompass a high percentage of Medicare Part B drug spending.