Aetna members appealing a denied medical or dental claim can fax the Member Complaint and Appeal Form to Aetna's national fax number, 859-425-3379. Providers appealing commercial claims fax the Provider Resolution Team at 1-859-455-8650. For prescription drug precertification, Aetna's request form lists 1-877-269-9916 (non-specialty) and 1-888-267-3277 (specialty). Medicare plans use separate lines. If your denial letter gives a different number, use the one on the letter.

This guide sets out every Aetna fax number we could confirm on aetna.com, says which plan and sender each one is for, and covers the mistakes that slow down an Aetna appeal.

  • Members and providers use different fax lines, and Medicare plans have their own
  • Verified numbers, each linked to the Aetna page or form it came from
  • Medical precertification starts online or by phone. The FaxHub line is only for clinical follow-up.

Table of Contents

How Aetna splits its fax lines

Aetna routes faxes on three questions:

  • Who is sending? A member (or someone authorized to act for them) uses the member appeal route. A provider disputing payment uses the provider route.
  • Which plan? Commercial plans (employer and individual) and Medicare plans go to different units. Medicare provider appeals are split again between contracted and non-contracted providers.
  • What is it? Appeals, drug precertification, and clinical information for an open precertification case each have their own number.

A useful detail from Aetna's provider appeal form: if a provider is acting for a member with the member's signed authorization, or is appealing a precertification denial before the service is given, Aetna wants the member form, not the provider form.

Verified Aetna fax numbers

All numbers below come from aetna.com pages and forms. Each applies only to the plan type and request shown.

Verified November 2026:

Plan type Request Fax number Source
Aetna members, medical and dental (Medicare plans have separate lines) Member complaints and appeals (form GR-68192) 859-425-3379 Aetna Member Complaint and Appeal Form
Non-Medicare (commercial) providers Provider appeals, Aetna Provider Resolution Team 1-859-455-8650 Aetna Disputes & Appeals for Providers
Medicare, contracted providers Provider appeals 1-860-900-7995 Aetna Disputes & Appeals for Providers
Medicare, non-contracted providers Provider appeals 1-724-741-4953 Aetna Disputes & Appeals for Providers
Prescription medications (form GR-68988) Non-specialty drug prior authorization requests 1-877-269-9916 Aetna precertification request for prescription medications
Prescription medications (form GR-68988) Specialty drug prior authorization requests 1-888-267-3277 Aetna precertification request for prescription medications
Medicare Advantage Precertification for drugs under the medical benefit 1-844-268-7263 Aetna 2026 participating provider precertification list
Commercial and Medicare Clinical information for an existing precertification (FaxHub) 1-833-596-0339 Aetna Precertification Information Request Form

Notes on these numbers:

  • The 1-888-267-3277 line also appears in Aetna's 2026 precertification list as the fax for commercial members' drugs and medical injectables billed under the medical benefit.
  • Medicare Advantage members filing their own appeals have separate lines on Aetna's Medicare appeals page, and some depend on state and plan. Those are covered in our insurance fax guide.
  • Medicaid plans (Aetna Better Health) run state-specific lines and are not listed here.

The number on your letter wins

Aetna's own appeal form says the same thing we do: you can also write to the address at the end of your EOB or other Aetna correspondence. If your denial letter, EOB, or request for information lists a fax number, use it. That number belongs to the unit holding your case, and it beats any general number on this page.

If you have no letter, call the member services number on the ID card and ask for the fax line for your exact request. Say whether it is pre-service (before care) or post-service (after care), because Aetna handles them differently.

Precertification: what you can and cannot fax

Aetna's rules depend on the type of request:

  • Medical services: start the request electronically on Availity or by phone (1-888-632-3862 for traditional plans, 1-800-624-0756 for HMO plans). Aetna's FaxHub number, 1-833-596-0339, is only for sending supporting clinical information once a request has a reference number. A new request sent to FaxHub will not start a case.
  • Prescription drugs: the precertification request form can be faxed to the non-specialty or specialty line, or submitted on Availity.
  • Medicare Advantage medical-benefit drugs: call 1-866-503-0857 or fax request forms to 1-844-268-7263, according to Aetna's 2026 precertification list.

For how to put together a complete request, see our prior authorization guide.

How to fax an Aetna appeal, step by step

  1. Confirm the plan type on the member ID card and decide whether this is a member or provider appeal.
  2. Find the number on your denial letter or EOB. Use the table only if there is none.
  3. Complete the right form. Aetna says the member form is voluntary, but it asks for everything a reviewer needs: member ID, plan type, claim ID (post-service) or reference number (pre-service), service date, and your explanation.
  4. Add an authorized representative form if someone other than the member is filing, such as a spouse or an adult child. Aetna's member form asks for this.
  5. Attach the evidence: the denial letter or EOB, bills, and any records or a doctor's letter that answer the reason for the denial.
  6. Send it in one fax and keep the confirmation.

You do not need a fax machine. You can send a fax online for $2.99 with no subscription and no account, and get the delivery confirmation by email.

For urgent situations, Aetna tells members to call the number on the ID card or denial letter to request an expedited appeal. If the clinical team agrees it is urgent, a decision is due within 72 hours on a one-level plan, or 36 hours on a plan with two appeal levels.

Common reasons an Aetna fax is rejected or delayed

  • Provider form for a member appeal. A provider acting for a member, or appealing a pre-service denial, must use the member form.
  • No claim ID or reference number. Without it, the reviewer has to look the case up before doing anything else.
  • A new precertification sent to FaxHub. That line only takes clinical information for an existing case.
  • Medicare and commercial lines mixed up. A Medicare provider appeal faxed to the commercial Provider Resolution Team lands in the wrong unit.
  • Missing pages. Put a page count on the cover sheet so a partial transmission is obvious.
  • Missing the deadline. Members generally have 180 days from the denial notice. Providers have 180 days to request reconsideration and 60 days after that decision to appeal.

Faxing Aetna works when the sender, plan type, and request match the line, your claim or reference number is on every page, and you keep the confirmation.

Fax your Aetna documents now →

Frequently asked questions

What is the Aetna appeals fax number?

For members, Aetna's Member Complaint and Appeal Form lists the national fax number 859-425-3379. Providers appealing commercial claims use the Provider Resolution Team fax, 1-859-455-8650. Medicare plans use separate numbers.

What is the Aetna prior authorization fax number for drugs?

Aetna's precertification request form for prescription medications lists 1-877-269-9916 for non-specialty drugs and 1-888-267-3277 for specialty drugs. For drugs under the medical benefit on Medicare Advantage plans, Aetna's 2026 precertification list gives 1-844-268-7263.

Can I start an Aetna precertification by fax?

Not for medical services. Aetna asks providers to start precertification on Availity or by phone. Its FaxHub line, 1-833-596-0339, is only for sending clinical information on a request that already has a reference number.

How long do I have to appeal an Aetna denial?

Aetna says members have 180 days from the notice of a denied claim to appeal, unless the plan documents allow longer. Providers have 180 calendar days to request reconsideration, then 60 days after that decision to appeal.

Do I need a fax machine to send Aetna an appeal?

No. An online fax service sends the same fax from your browser or phone and gives you a delivery confirmation you can keep with the case.

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