KEY POINTS
  • Medicare Part B, which generally covers approved vaccines deemed necessary, does not extend that coverage to those approved under emergency-use authorization, which is expected for an early Covid-19 vaccine.
  • It's uncertain when a legislative fix could come or if there are regulatory maneuvers that could provide a work-around instead.
  • A statement from the Centers for Medicare and Medicaid Services said the agency is "committed to modernizing the Medicare program and delivering for our nation's seniors to ensure access to a vaccine with no cost sharing."
A health worker injects a person during clinical trials for a Covid-19 vaccine at Research Centers of America in Hollywood, Florida.

If you're on Medicare and hope to get a coronavirus vaccine as soon as it's available, it may take an act of Congress for it to be free.

The CARES Act, signed into law in March, has no cost-sharing for Medicare beneficiaries for a Covid-19 vaccine once it's available. However, due to existing Medicare rules, the legislation would apply only to a vaccine that undergoes the standard approval process for new biologics — not one authorized under emergency use, which is how the Trump administration anticipates making a vaccine available quickly