G0439 Frequency Limit: Medicare AWV Eligibility Explained
A subsequent Medicare Annual Wellness Visit is not simply available once each calendar year. Check prior IPPE/AWV history and the payer-reported next eligible date before scheduling or billing G0439.
How the Medicare frequency rule works
CMS describes AWV coverage as once in a 12-month period. Medicare claims guidance counts 11 full months after the month of the last AWV. Do not substitute an automatic January reset or a blanket 365-day calculation.
Example: an October visit
For an October 12, 2025 AWV, the 11 full intervening months are November 2025 through September 2026. The month-based rule points to October 1, 2026. Confirm actual eligibility in Medicare or the plan portal before relying on that date.
A scheduling checklist
Check Part B enrollment, prior wellness claims including visits at other practices, and the next eligible date. Record the verification source and date. For Medicare Advantage, verify the specific plan.
Avoid automatic add-on bundles
The AWV includes required preventive-planning elements. Additional services need their own eligibility and documentation; not every component is separately payable. A separate problem E/M requires significant, separately identifiable work and modifier 25 when appropriate.
Frequently asked questions
Can I bill G0439 every January?
No. Eligibility depends on coverage and prior wellness services, not the start of a calendar year.
Should I simply add 365 days?
No. Use the Medicare month-based guidance and confirm the payer's actual next eligible date.
Related code pages
Sources and next steps
Source links checked 2026-09-23. RVUDoc editorial reference; not an independently certified coding review.
Get the free coding reference ↗Educational reference, not billing or legal advice. Verify against payer contracts and your compliance team before claim submission. Last updated 2026-09-23.