CMS's 2025 Medicare Part D Premium Stabilization Demonstration, Explained

CMS's 2025 Medicare Part D Premium Stabilization Demonstration, Explained
July 30, 2024

The Centers for Medicare & Medicaid Services (CMS) is introducing a voluntary program to stabilize premiums for Medicare Part D stand-alone prescription drug plans (PDPs) in 2025.

This demonstration includes three main components:

  1. Premium Reduction:
    • CMS will apply a $15 reduction to the base premium for all participating stand-alone PDPs.
    • If this reduction would make a plan's premium go below $0, it will be adjusted to $0.
  2. Premium Increase Limit:
    • A cap will be set so that any increase in a plan's premium from 2024 to 2025 cannot exceed $35.
    • This limit is applied after the $15 reduction.
  3. Risk Corridor Adjustment:
    • CMS will provide greater government risk-sharing for potential plan losses.

Eligibility and Duration:

  • All stand-alone PDPs, including Employer Group Waiver Plans (EGWPs), can participate.
  • EGWPs are eligible only for the premium reduction, not the other two elements.
  • The demonstration will run for one year initially, with the possibility of continuation for at least two more years.
  • Plans must inform CMS of their participation by August 5, 2024.

The goal is to increase efficiency and stability in the Part D market during the transition to the redesigned benefits under the Inflation Reduction Act.

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