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Medicare Preventative Services: Flu Shot

Guidance for payment rates, coverage information, and additional resources related to flu vaccination

Issued by: Centers for Medicare & Medicaid Services (CMS)

Issue Date: August 27, 2020

Get payment allowances & effective dates for the 2024–2025 season.

This content is for health care providers. If you're a person with Medicare, learn more about flu shots

What’s New for the 2024-2025 Season

All U.S. flu vaccines this season are trivalent (3 virus) vaccines and were updated from last season’s vaccines to provide optimal protection.

Frequency & Coverage

  • The CDC recommends annual flu shots for everyone 6 months and older each flu season. September and October are the best times for most people to get vaccinated.
  • Medicare Part B covers the seasonal flu shot.
  • We cover additional flu shots if medically necessary. Patients can get flu shots twice in a calendar year during 2 different flu seasons, and we’ll pay for both shots.
  • Your patients pay nothing if you accept assignment. There’s no copayment, coinsurance, or deductible.
  • Find out when your patients are eligible for the flu shot (PDF). We give information for dates of service in the last 18 months:
    • CPT or HCPCS codes
    • Dates of service
    • NPIs who administered the shots

If you need help, contact your eligibility service provider.

Billing

ICD-10, HCPCS, and CPT codes

ICD-10 Code: Z23

Seasonal HCPCS & CPT codes: Get the most current list of billing codes, payment allowances, and effective dates

Additional Resources

HHS is committed to making its websites and documents accessible to the widest possible audience, including individuals with disabilities. We are in the process of retroactively making some documents accessible. If you need assistance accessing an accessible version of this document, please reach out to the guidance@hhs.gov.

DISCLAIMER: The contents of this database lack the force and effect of law, except as authorized by law (including Medicare Advantage Rate Announcements and Advance Notices) or as specifically incorporated into a contract. The Department may not cite, use, or rely on any guidance that is not posted on the guidance repository, except to establish historical facts.