Mintz IRA Update — The IRA in 2024: The Medicare Drug Price Negotiation Program in Full Swing and Other Developments


Our team’s preparation for the year includes a review of the anticipated impact of the IRA on the health care industry in 2024. Many of the IRA’s key provisions that go into effect this year are centered around two main goals: (1) lowering drug costs by permitting the federal government to negotiate drug prices for certain high-expenditure Medicare Part D Drugs (the “Negotiation Program” or “Program”), and (2) reducing out-of-pocket prescription drug costs for Medicare Part D beneficiaries via a redesign of the Part D benefit.

Medicare Drug Price Negotiation Program

No less than nine separate lawsuits were filed against the Negotiation Program in 2023, alleging various aspects of the Program as being unconstitutional or unenforceable. We discuss the status of the ongoing legal challenges brought against the Program in our article Legal Challenges to the Medicare Drug Price Negotiation Program Continue.

As background, in late September 2023, a federal court rejected a request to block implementation of the Program, so as of the date of publication, the Program will proceed as scheduled. As we previously covered, on August 29, 2023, CMS selected the first 10 high-expenditure, single source, Medicare Part D drugs (“Selected Drugs”) for negotiation, with the negotiated price expected to take effect January 1, 2026. In 2024, CMS and the manufacturers of the Selected Drugs will negotiate the maximum fair price (MFP) for each selected drug. The key dates for the MFP negotiation process are as follows:

CMS plans to publish an explanation of the agreed-upon MFP and the negotiation process for each Selected Drug but will not make this information available until March 2025.

Part D Benefit Redesign

Effective January 1, 2024, the IRA made several changes to the Medicare Part D benefit design to reduce out-of-pocket costs and improve access to prescription drug coverage for Medicare Part D beneficiaries:

Other Developments to Watch For

Inflation Rebate Program. As we noted in our overview of the Medicare Prescription Drug Inflation Rebate Program (“Inflation Rebate Program”), the Inflation Rebate Program requires drug manufacturers to pay rebates to the Medicare Trust Fund if prices for certain Medicare Part B and Medicare Part D drugs increase faster than the rate of inflation. On December 14, 2023, CMS published revised guidance for the Medicare Part B Inflation Rebate Program and the Medicare Part D Inflation Rebate Program. The revised guidance provides clarification as to how inflation rebates will be calculated, including but not limited to:

Part B Biosimilar Payment CapFor new biosimilars administered on or after July 1, 2024, Medicare will limit Part B payment when average sales price (ASP) data is not available. Specifically, Part B payment for new biosimilars will be the lesser of (i) 103% of the biosimilar’s wholesale acquisition cost (WAC) or (ii) 106% of the lesser of the WAC or ASP of the reference biologic, or 106% of the MFP if the reference biologic is subject to negotiation under the IRA.


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National Law Review, Volume XIV, Number 53