S. 4323 Introduced Health

Ensuring Access to Lower-Cost Medicines for Seniors Act

A bill to amend title XVIII of the Social Security Act to require PDP sponsors of a prescription drug plan and Medicare Advantage organizations offering an MA-PD plan under part D of the Medicare program that use a formulary to include certain generic drugs and biosimilar biological products on such formulary, and for other purposes.

  1. Introduced
  2. Committee
  3. Passed Senate
  4. Passed House
  5. To President
  6. Became law
Sponsor Sen. Lankford, James [R-OK] Introduced April 16, 2026 Cosponsors 2 (2 D) Latest action April 16, 2026

Summary

Ensuring Access to Lower-Cost Medicines for Seniors Act
This bill requires prescription drug plans under the Medicare prescription drug benefit to include generic drugs and biosimilars on their formularies.
Specifically, the bill requires plans that use formularies to include generic drugs and biosimilars on the formularies and without any requirements (e.g., prior authorization requirements) that are more restrictive as compared to those for brand-name drugs and biologics. Plans that use cost-sharing tiers must also have specific tiers for generic drugs and biosimilars, in accordance with certain limitations.

Summary by the Congressional Research Service, Library of Congress.

Congress.gov

Actions

  1. Apr 16, 2026 Read twice and referred to the Committee on Finance.
  2. Apr 16, 2026 Introduced in Senate

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