Title 42 › CHAPTER 7 — SOCIAL SECURITY › SUBCHAPTER XI — GENERAL PROVISIONS, PEER REVIEW, AND ADMINISTRATIVE SIMPLIFICATION › Part E — Price Negotiation Program To Lower Prices for Certain High-Priced Single Source Drugs › § 1320f–1
The Secretary must pick and publish each year a list of “selected drugs” that will go into price negotiations. For 2026 the list must include 10 high-spend Part D drugs, and for 2027 it must include 15 high-spend Part D drugs. For 2028 the list must include 15 high-spend drugs from Part D or Part B. For 2029 and later years the list must include 20 high-spend drugs from Part D or Part B. The Secretary ranks eligible drugs by their recent Medicare spending (the most recent 12 months of data ending no later than October 31 before the publication year) and picks the top drugs. Drugs already on a prior list, small biotech drugs that meet specific 2021 low‑spend/manufacturer rules for 2026–2028, certain orphan drugs, plasma‑derived products, and drugs below a low‑spend dollar cutoff (for 2026 that cutoff is $200,000,000 for June 1, 2022–May 31, 2023 and it rises later with the CPI) are not counted as negotiation candidates. A “qualifying single source drug” means a covered Part D drug or a Part B drug that has been marketed long enough (at least 7 years since drug approval or at least 11 years since biologic licensure) and is not the reference/listed product for a generic or biosimilar. Authorized generics are treated as the same product for these rules. A biological product’s selection can be delayed up to 2 years if a biosimilar is likely to be licensed and marketed soon and the biosimilar maker asks for a delay and gives needed documents (like FDA filing and manufacturing schedules). The Secretary may delay selection one year, then reevaluate and may delay a second year if there is strong progress; delays can never exceed 2 years and there are limits (for example, no delay if the biosimilar maker is the same company as the reference product maker). If the biosimilar does not get licensed and marketed as promised, the Secretary will add the biologic to the list and the biologic’s maker must pay a rebate. For Part D covered biologics the rebate is calculated using 75% of the amount by which the manufacturer price would have exceeded the negotiated maximum fair price times the units dispensed; for Part B biologics the rebate uses 80% of the excess payment amount times units furnished. If the biologic is a “long‑monopoly” drug, a special 65%‑of‑the‑2021 price formula (adjusted by CPI) is used instead. Rebate payments go into the Medicare trust funds. A “high likelihood” of a biosimilar means the FDA has accepted or approved its application and the documents show clear and convincing evidence it will be marketed within the required time.
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The Public Health and Welfare, Source: USLM XML via OLRC
Legislative History
Reference
Citation
42 U.S.C. § 1320f–1
Title 42, The Public Health and Welfare
Last Updated
Sep 23, 2026
Release point: 119-110