Medicare Annual Wellness Visit Billing: G0438 and G0439 Guide
The Medicare annual wellness visit pays well for preventive care — when eligibility, frequency, and documentation are right. This guide explains how to bill G0438 and G0439 correctly and avoid common denials.
The Medicare annual wellness visit, or AWV, is a valuable preventive service — and one of the most frequently billed incorrectly. It is not a physical exam, does not follow routine checkup rules, and can only be billed when strict eligibility and frequency requirements are met. Treating it like an ordinary office visit invites denials and recoupments.
What the Annual Wellness Visit Actually Is
The AWV is a prevention-focused visit built around a personalized prevention plan for the individual patient. It is not a head-to-toe physical examination, and Medicare does not pay for it as one. Billing the AWV for a visit that was really an exam — or billing an exam code for a visit that was really an AWV — creates problems in both directions.
A compliant AWV centers on several defined elements:
- Health risk assessment — a structured review covering demographics, health status, psychosocial and behavioral risks, and activities of daily living
- Medical and family history review — including past illnesses, hospital stays, surgeries, and risk factors that shape the screening plan
- Current provider and medication review — a list of the patient's other providers and suppliers, plus a review of current medications and supplements
- Cognitive screening — an assessment for cognitive impairment using an appropriate instrument or direct observation
- Personalized screening schedule — a written plan of preventive screenings for the next five to ten years based on age, risk factors, and current guidelines
- Personalized prevention advice — counseling and referrals for risk-factor reduction, including weight, activity, smoking, and fall risk where relevant
The deliverable is the plan itself: a written screening schedule and health advice the patient takes home. When the chart shows only vital signs and an exam, it does not support the AWV — no matter which code was billed.
AWV Codes Compared: G0402, G0438, G0439, and the Annual Physical
Confusion between four services causes a large share of AWV denials. They look similar on a schedule, but have different codes, eligibility windows, and coverage rules.
| Service | Code | When it applies | Covered by Medicare? |
|---|---|---|---|
| Welcome to Medicare visit (IPPE) | G0402 | Once, within the first 12 months of Medicare Part B enrollment | Yes — one time only |
| Initial annual wellness visit | G0438 | First AWV, after the first 12 months of Part B and at least 12 months after any IPPE | Yes |
| Subsequent annual wellness visit | G0439 | Each AWV after the initial AWV, at least 12 months after the previous AWV | Yes |
| Routine annual physical exam | 99387 / 99397 | A preventive exam visit for new (99387) or established (99397) patients | No — routine physicals are not a Medicare benefit |
Nationally, G0438 pays approximately $174 and G0439 pays approximately $138. Actual payment varies by locality, so confirm the current fee schedule amount for your area rather than budgeting from a national figure.
The routine physical row matters most. Medicare does not cover a traditional annual physical, so billing 99387 or 99397 to Medicare denies — and patients are often surprised that their "annual physical" is a different service from the AWV. Front-desk scripting that explains the difference before the visit prevents denials and difficult checkout conversations.
Eligibility and Frequency Rules
AWV eligibility turns on timing, and the timing rules are unforgiving. A claim billed even a few days early denies.
- Part B enrollment period — the patient must be enrolled in Medicare Part B. The initial AWV (G0438) is available only after the first 12 months of Part B enrollment have passed
- IPPE spacing — if the patient had the Welcome to Medicare visit (G0402), at least 12 months must pass after that visit before an initial AWV can be billed
- AWV spacing — at least 12 months must pass after a previous AWV — initial or subsequent — before the next AWV (G0439) is payable
- One initial AWV per lifetime — G0438 can be billed only once per patient. Every AWV after that is G0439, even if a different practice billed the first one
Because another practice may have billed a previous AWV, verify the dates of any prior IPPE or AWV through your Medicare Administrative Contractor's eligibility systems before the visit, and record the last AWV date in the chart. That single check eliminates the most predictable AWV denial.
Who May Perform the AWV
Medicare allows the AWV to be furnished by a physician, a qualified non-physician practitioner — such as a nurse practitioner, physician assistant, or clinical nurse specialist — or by a team of medical professionals under a physician's direct supervision. Trained clinical staff, including health educators and registered nurses, can perform much of the visit when supervision rules are met.
Direct supervision means the supervising physician is present in the office suite and immediately available, though not necessarily in the same room. Document who performed each element and confirm the supervisor was on site. Medicare Advantage plans generally follow Medicare's framework but may add requirements, so confirm the rules before building a staff-led program.
Billing a Problem-Oriented Visit on the Same Day
Patients rarely arrive with only prevention on the agenda. A patient mentions worsening knee pain, needs a medication adjustment, or has a new symptom. That additional work can be billed — but only when it is genuinely separate from the AWV itself.
When a medically necessary, problem-oriented evaluation and management (E/M) service is furnished during the same encounter, bill the appropriate office visit code (such as 99212–99215) with modifier 25 appended, alongside G0438 or G0439. Modifier 25 tells the payer the E/M was a significant, separately identifiable service beyond the preventive visit.
Three conditions decide whether that combination survives review:
- A separate problem — the E/M addresses a condition distinct from the prevention planning, with its own history, assessment, and plan
- A separate diagnosis — the E/M claim carries the diagnosis for the problem addressed, distinct from the wellness diagnosis supporting the AWV
- Separate documentation — the note makes it possible to identify which work belonged to the AWV and which belonged to the problem visit. One blended paragraph supporting both codes is the most common reason these claims are denied or downcoded on audit
Do not bill a same-day E/M for work that is part of the AWV itself. Because the AWV has no patient cost-sharing while a problem visit may, tell the patient in advance that addressing a problem can create a copayment or deductible charge.
Documentation Payers Audit
AWV claims are audited against a defined checklist. A complete note should show:
- The completed health risk assessment, or a clear reference to where it is filed in the record
- Established medical and family history, with risk factors identified
- A list of current providers and suppliers involved in the patient's care
- Height, weight, body mass index, and blood pressure, plus other routine measurements as appropriate
- Cognitive impairment screening and how it was performed
- Depression and safety screening, including fall risk and home safety where indicated
- The personalized prevention plan — the written screening schedule for the next five to ten years and the advice or referrals given
- Who performed each element, and the supervising practitioner's presence where staff delivered the service
A structured AWV template inside the EHR that cannot be closed until each element is addressed is a practical safeguard. Elite Bill Care works inside Epic, athenahealth, eClinicalWorks, AdvancedMD, Tebra, and NextGen to check eligibility dates, code selection, and modifier 25 use before AWV claims go out — supporting a 98% first-pass clean claim rate and up to 30% denial reduction, with HIPAA-compliant processes, 10+ years of experience, and service in all 50 states.
Related pages
- Medicare Medical Billing Guide
- Primary Care Medical Billing Services
- Family Medicine Medical Billing Services
- Internal Medicine Medical Billing Services
Frequently asked questions
Is the annual wellness visit the same as an annual physical?
No. The AWV is a prevention-planning visit built around a health risk assessment and a personalized screening schedule. A routine annual physical (99387/99397) is a different service and is not covered by Medicare.
How often can a patient have an annual wellness visit?
At least 12 months must pass after the Welcome to Medicare visit (G0402) or a previous AWV before the next AWV is payable. G0438 is billed once per lifetime; every later AWV is G0439. Verify prior visit dates before scheduling.
Can clinical staff perform the annual wellness visit?
Yes. A physician, non-physician practitioner, or a team under a physician's direct supervision — the physician in the office suite and immediately available — may perform it. Document who performed each element.
Can we bill an office visit with the AWV on the same day?
Yes, when a separate problem is evaluated beyond the preventive work. Bill the office visit with modifier 25 and a problem-specific diagnosis, and document that work separately. Work that is part of the wellness visit does not support a separate E/M.
Does the patient owe anything for an annual wellness visit?
Medicare covers the AWV without deductible or coinsurance when frequency rules are met. If a separate problem is billed with modifier 25, normal cost-sharing can apply to that E/M service — tell patients before the visit.
What happens if we bill G0438 for a patient who already had an initial AWV elsewhere?
The claim will deny: G0438 is payable once per lifetime regardless of which practice billed it first. The correct code is G0439, provided 12 months have passed since the previous AWV.