Aetna has two provider appeal forms: the Practitioner and Provider Complaint and Appeal Request (commercial and non-Medicare plans) and the Medicare Provider Complaint and Appeal Request (Medicare Advantage plans). Both are available on Aetna's healthcare professionals forms page. The fastest path is Availity — no separate form is required when filing online, and you get an immediate case number.
Aetna's Two-Track Dispute System
Before filling out any form, identify which track your denial falls under. The form, the deadline window, and the submission routing differ between the two.
Reconsideration covers claim reimbursement disputes, coding decisions, and administrative processing errors — situations where Aetna paid incorrectly or a claim needs reprocessing. This is not a clinical determination.
Formal Appeal covers adverse clinical determinations — medical necessity denials, utilization review decisions, prior authorization denials, and experimental or investigational treatment decisions. These require written documentation, clinical evidence, and the appropriate form regardless of channel.
If you are unsure which track applies, check the denial reason on your Explanation of Benefits. CO-97 (service included in another service), CO-96 (non-covered charge), or CO-29 (timely filing) are typically reconsiderations. Denial codes citing "not medically necessary" or "clinical criteria not met" require the formal appeal track.
For a full step-by-step walkthrough of building the clinical argument and drafting the appeal letter, see our How to Appeal Aetna Denials 2026 guide.
Key Deadline Difference
Aetna's current provider guidance gives 180 calendar days for reconsideration and 60 calendar days for an appeal after a reconsideration decision. An issue that does not qualify for reconsideration may be appealed within 180 days of the initial claim decision; Aetna lists up to 65 days for a Medicare non-contracted provider's direct appeal. Follow the notice and contract when they specify a different window.
The Aetna Provider Appeal Forms
Aetna maintains two forms for provider dispute submissions, available on the "Forms for health care professionals" section of aetna.com.
Turn this denial into a review-ready draft.
Muni prepares a payer-specific appeal, policy citations, and an evidence checklist. Your team reviews and submits it.
1. Practitioner and Provider Complaint and Appeal Request
Use this form for commercial plans, self-funded (ASO) plans, and most non-Medicare submissions. If you are submitting by fax or mail, this form is required — Aetna will not process a submission received without it. You will receive a notice to resubmit, and the deadline is still running.
When filing through Availity, the portal generates this form automatically. You do not need to download or attach it separately.
2. Medicare Provider Complaint and Appeal Request
Use this form for Aetna Medicare Advantage and Aetna Medicare supplement plans when you submit by mail or fax. Aetna's current disputes overview says a separate appeal form is not required when you file through Availity; follow the live portal prompts for the plan and dispute type.
Missing Form = Delayed Claim
For mail or fax, complete the applicable provider complaint and appeal form and include the supporting records the notice requests. An incomplete paper submission can delay routing while the filing deadline continues to run.
How to Submit via Availity (Recommended)
Availity is Aetna's preferred submission channel because it provides real-time tracking and an immediate case number. No paper form is required for commercial plans when filing online.
Step 1: Log in to Availity Go to availity.com and log in to your organization's Essentials account. If your practice has not registered, enrollment is free and does not require Aetna's approval.
Step 2: Open Payer Spaces From the main navigation, select Payer Spaces → search for or select Aetna from your connected payers list.
Step 3: Navigate to Claims & Disputes Within Aetna's Payer Space, look for Claims & Billing → Submit Dispute or Reconsideration/Appeal. Navigation labels vary by Availity version and organization setup.
Step 4: Select the dispute type Choose between Reconsideration (payment or coding dispute) and Appeal (clinical or medical necessity denial). The portal routes your submission to the appropriate Aetna processing team based on your selection.
Step 5: Upload supporting documents Attach your appeal narrative, denial letter, original EOB, and clinical documentation as PDF files. Combined PDFs are accepted; keep individual files under 10 MB.
Step 6: Record your case number After submitting, the portal generates an onscreen confirmation with a Case Number. Save this immediately — it is your proof of timely submission and your primary tracking reference until Aetna issues a decision.
Aetna does not accept appeals by email for any plan type. For the reasoning and the full submission channel breakdown, see our Aetna appeal submission channel guide.
How to Submit by Fax
If filing by fax, attach the correct form before transmitting. Fax submissions without the completed form are not processed.
Commercial and Non-Medicare Plans:
Fax: 1-859-455-8650
Medicare contracted providers:
Fax: 1-860-900-7995
Medicare non-contracted providers:
Fax: 1-724-741-4953
Always confirm fax numbers against your denial letter or EOB before transmitting — Aetna routing can vary by contracted market or product line.
How to Submit by Mail
Use the mailing address printed on your denial letter or EOB when one is listed. Aetna's current fallback routes depend on the dispute stage and provider contract status.
Commercial reconsideration — Eastern and Central States (CO, CT, DE, IL, IN, IA, KS, KY, ME, MD, MA, MI, MO, MT, NE, NH, NJ, NY, ND, OH, OK, PA, RI, SD, TX, VT, VA, DC, WV, WI, WY):
Aetna Provider Resolution Team
PO Box 981106
El Paso, TX 79998-1106
Commercial reconsideration — Western States (AL, AK, AR, AZ, CA, FL, GA, HI, ID, LA, MS, NC, NM, NV, OR, SC, UT, TN, WA):
Aetna Provider Resolution Team
PO Box 14079
Lexington, KY 40512-4079
Formal commercial/non-Medicare appeal: Aetna Provider Resolution Team, PO Box 14020, Lexington, KY 40512.
Medicare contracted provider appeal: PO Box 14835, Lexington, KY 40512.
Medicare non-contracted provider appeal: PO Box 14067, Lexington, KY 40512.
PO Box 14079 is also Aetna's fallback for a provider-identified overpayment refund when neither an EOB nor member ID card supplies an address. See our Aetna claims and appeals mailing address directory for the full breakdown.
Mail Deadline Risk
Mail provides no case number or delivery confirmation. If you are within 30 days of the filing deadline, use Availity or send by certified mail with return receipt. Avoid standard mail for time-sensitive appeals.
Submission Channels at a Glance
| Channel | Form Required? | Case Number? | Best For | Risk Level |
|---|---|---|---|---|
| Availity Portal | No (auto-generated for commercial) | Yes — immediate | All appeals, especially tight deadlines | Lowest |
| Fax | Yes (paper form required) | No | When Availity is unavailable | Medium — no delivery confirmation |
| Yes (paper form required) | No | Bulky records, state-required written submission | Highest — no confirmed delivery | |
| Phone | No (reconsideration only) | No | Simple coding or payment disputes only | Medium — no written record |
Phone calls are limited to reconsideration of payment and coding issues only. Clinical appeals and formal appeals cannot be initiated by phone.
Timelines by Dispute Type
| Dispute Type | Filing Deadline | Aetna Response Window |
|---|---|---|
| Reconsideration (all commercial plans) | 180 calendar days from initial decision | 45 business days |
| Formal Appeal — non-Medicare | 60 calendar days from reconsideration decision | 60 business days |
| Formal Appeal — Medicare contracted | 60 calendar days from reconsideration decision | 60 business days |
| Formal Appeal — Medicare non-contracted | Up to 65 calendar days for a direct appeal; 60 days after reconsideration | 60 business days |
State law may extend these windows depending on your state and plan type. See the state exceptions section below. For a broader insurer comparison, the insurance appeal deadlines by company guide covers Aetna alongside UHC, BCBS, Cigna, and Humana.
What to Include With Your Submission
For both reconsideration and formal appeal submissions, Aetna requires:
- The completed appeal form (commercial version or Medicare version as applicable)
- The original denial letter or Explanation of Benefits
- A copy of the original claim
- Your written appeal narrative or letter (see Aetna appeal letter templates)
- Supporting documentation: medical records, office notes, discharge summaries, lab reports, and any physician statements
For medical necessity appeals, include the Aetna Clinical Policy Bulletin (CPB) cited in the denial and your counter-documentation addressing the specific criteria. Referencing the current peer-reviewed literature and applicable clinical guidelines strengthens the record, particularly for utilization review-based denials.
If the denial was for a prior authorization that was not obtained or was denied before service, the appeal track and documentation requirements differ — see our Aetna denied claim guide for routing by denial type.
2026 Clinical Policy Note
Aetna's Level of Severity Inpatient Payment Policy became effective January 1, 2026. Peer-to-peer review is not available for inpatient severity denials under this policy. These cases require fax-based clinical review documentation submitted to Aetna's clinical team before reimbursement can be reconsidered.
State-Specific Filing Exceptions
Aetna's 180-day reconsideration standard applies to most fully insured commercial plans, but state regulations override the plan-level standard in some markets.
Turn this denial into a review-ready draft.
Muni prepares a payer-specific appeal, policy citations, and an evidence checklist. Your team reviews and submits it.
Key exceptions to know:
- Texas: 4 years for claims and non-claims disputes; additional statutory penalty provisions apply if Aetna misses the response deadline
- Georgia, Indiana, Kentucky, North Carolina, Ohio, Oklahoma: Up to 2 years
- Arizona, Colorado, Florida: 12 months
- Maryland, California HMO: 365 days
- New Jersey (PICPA program): 90 calendar days from the notice of determination — the shortest provider window in the country for PICPA-eligible disputes
Self-funded ERISA plans are governed by their plan documents and ERISA timelines, not state insurance law. This affects roughly 63% of large-employer workers according to KFF's 2024 employer benefits survey. For most self-funded plans, check the Summary Plan Description for the applicable appeal window before filing.
For a full breakdown of how state law shapes appeal rights across all major payers, see our state-by-state insurance appeal laws guide.
How Muni Appeals Reduces the Manual Work
Locating the correct form, confirming the right submission address, assembling documentation, and tracking deadlines across multiple denied claims takes more staff time than most billing teams can afford. Muni Appeals organizes the workflow in one place.
- Builds appeal narratives from clinical notes and denial details using Aetna's clinical policy framework
- Provides likely Aetna submission-channel guidance for staff to verify before filing
- Surfaces deadline risk from the uploaded notice; staff verifies and calendars each reconsideration or appeal window
- Lists the Availity case number or fax-delivery fields staff should record after filing
Frequently Asked Questions
Do I need a form to file an Aetna appeal online?
No separate appeal form is required when you submit through Availity. Aetna's current disputes overview gives that instruction for online submissions; follow the live portal prompts for the plan and dispute type. For mail or fax, use the applicable commercial/non-Medicare or Medicare provider complaint and appeal form.
Where do I find the Aetna provider appeal form?
Both forms — the Practitioner and Provider Complaint and Appeal Request (commercial) and the Medicare Provider Complaint and Appeal Request (MA) — are available on Aetna's "Forms for health care professionals" page at aetna.com. The forms are free to download and do not require a login.
What is the deadline to file an Aetna appeal?
For commercial and non-Medicare plans, Aetna's current provider guidance gives 180 calendar days from the initial decision to file a reconsideration. If Aetna upholds the denial, the next formal appeal is due within 60 calendar days. For Medicare non-contracted providers, that same 60-day post-reconsideration window applies; Aetna lists up to 65 days only for a direct appeal of an issue that is not eligible for reconsideration. State law, the provider agreement, or the notice may specify a different window.
What is the difference between a reconsideration and an appeal at Aetna?
A reconsideration addresses payment disputes, coding decisions, and administrative processing errors. A formal appeal is for adverse clinical determinations — medical necessity denials, prior authorization denials, and utilization review decisions. Filing a reconsideration on a clinical denial, or an appeal on a payment dispute, will delay your case and may exhaust part of the filing window.
Can I file an Aetna appeal by phone?
Only for reconsideration of payment and coding disputes. You can call Aetna provider services at 1-888-632-3862 (non-Medicare, 8 AM–5 PM local time) or 1-800-624-0756 (Medicare plans). Phone calls do not establish a formal written appeal record for clinical denials, and Aetna cannot process medical necessity appeals by phone. For the full directory of Aetna's provider lines — including which number to call for a peer-to-peer review versus an Availity portal problem — see our Aetna provider phone numbers guide.
What fax number do I use for Aetna appeals?
For commercial and non-Medicare plans, fax to 1-859-455-8650. Contracted Medicare providers use 1-860-900-7995; non-contracted Medicare providers use 1-724-741-4953. Always verify against your denial letter or EOB, as specific contracts may have different routing.
How long does Aetna take to respond?
Aetna has 45 business days to respond to a reconsideration and 60 business days to respond to a formal appeal. If you have not received a response within those windows, contact Aetna provider relations and document the contact date, time, and representative name.
What if I filed too late?
Missing the deadline generally closes the dispute. Some states allow reinstatement for documented extraordinary circumstances. If the claim was denied specifically for timely filing — meaning the original claim was filed late — that is handled through a separate timely filing dispute with different documentation requirements. See the Aetna timely filing limits guide for that process.
Ready to Stop Tracking Aetna Deadlines Manually?
Assembling forms, finding the correct Aetna submission address, and staying ahead of overlapping reconsideration and appeal windows is time billing teams cannot get back. Muni Appeals organizes the uploaded materials into a review-ready packet; staff verifies the route and calendars every controlling window.
Get Started:
- Aetna-specific submission guidance for commercial, Medicare Advantage, and state-regulated plans
- Deadline-risk guidance based on the uploaded denial materials, with staff verification required
- Appeal narratives calibrated to Aetna Clinical Policy Bulletins and Level of Severity policy
- Fields for staff to record case numbers and delivery confirmations after filing
This guide reflects Aetna's 2026 appeal procedures as documented in Aetna's provider disputes and appeals resources (May 2026). State regulations and specific plan documents may modify standard timelines. Verify current forms and mailing addresses on your denial letter or through Aetna's healthcare professionals portal at aetna.com.