Humana Denied Your Surgery — How to Appeal

A surgery denial from Humana can feel like a wall. You and your surgeon have agreed on a treatment plan, and Humana has refused to authorize or pay for it. But Humana surgical denials are challengeable, and many are overturned — especially when you follow the appeal process and build a strong clinical record. Here is how to do it.

Why Humana Denies Surgical Procedures

Humana denies surgery for reasons that are similar across most major insurers:

• Not medically necessary: Humana's clinical reviewers conclude the procedure does not meet its medical necessity criteria for your diagnosis and condition.
• Prior Authorization Denied: How to Appeal" class="auto-link">Prior authorization not obtained or denied: Most surgeries require preapproval from Humana. A missing or denied authorization blocks payment.
• Conservative treatment not completed: Humana commonly requires evidence of failed conservative treatment — physical therapy, medications, injections — before approving certain surgical procedures.
• Out-of-network surgeon: Your surgeon is not in Humana's network, or the facility is out of network.
• Experimental or investigational designation: Newer surgical techniques or devices may not yet be recognized as covered under Humana's coverage guidelines.

Request the full denial letter, the specific clinical criteria Humana applied, and all utilization management review notes. Federal law entitles you to all of these materials.

Humana Peer-to-Peer Review

Before filing a formal appeal, your surgeon should call Humana to request a peer-to-peer review — a direct conversation between your surgeon and the Humana medical director who reviewed or issued the denial.

Peer-to-peer reviews are available for most pre-service surgical denials. The call must typically be requested within a short window after the denial — often five to ten business days. Your surgeon should come prepared with the clinical rationale, the specific diagnosis and procedure codes, evidence of conservative treatment failure, and any published guidelines supporting the surgery. Peer-to-peer reviews result in reversals more often than most patients expect, particularly for orthopedic, spinal, and cardiac surgical procedures.

Step 1 — Humana Level 1 Internal Appeal

If the peer-to-peer review does not resolve the denial, file a formal Level 1 Appeal with Humana. Federal law gives you at least 180 days from the denial notice to file. Humana's internal appeal timelines are:

• Urgent pre-service (expedited): Humana must respond within 72 hours.
• Non-urgent pre-service: Response within 30 days.
• Post-service standard: Response within 60 days.

Your Level 1 Appeal package should include:

• The original denial letter and your EOB
• A detailed letter of medical necessity from your surgeon that specifically addresses Humana's denial reason
• All medical records relevant to the surgery — diagnoses, imaging, specialist notes, prior treatment records
• Clinical practice guidelines from appropriate specialty societies supporting the procedure
• A direct rebuttal of each reason cited in Humana's denial

Address the specific language Humana used to deny the claim. Generic appeals that do not engage with the denial criteria are frequently unsuccessful.

Step 2 — Level 2 External Independent Review: Complete Guide" class="auto-link">External Review

If Humana upholds the denial at Level 1, you are entitled to an independent external review through an IROs) Explained" class="auto-link">Independent Review Organization. For fully insured Humana commercial plans, your state's insurance department oversees this process and the IRO's decision is legally binding on Humana. For self-funded employer plans, federal ERISA governs and external review is still available and binding.

File your external review request promptly after Humana's Level 1 denial letter — you typically have four months from the final adverse determination. The IRO will conduct its own independent clinical review of your records and Humana's denial criteria. Submit your full documentation package, including clinical guidelines and the surgeon's letter.

Humana Medicare Advantage vs. Commercial Plan Surgery Denials

If your coverage is through Humana Medicare Advantage rather than a commercial employer plan, the appeal process differs in important ways.

Medicare Advantage appeals follow CMS-regulated timelines:

• Urgent (expedited) appeal: Humana must respond within 72 hours.
• Standard appeal (Redetermination): Response within 60 days.
• Reconsideration by QIC: Independent review after standard appeal, 60-day standard or 72-hour expedited.
• ALJ Hearing: Available if disputed amount exceeds the threshold (typically around $180).
• Medicare Appeals Council: Further review if ALJ decision is unfavorable.
• Federal District Court: Final option if amounts exceed the statutory threshold.

Medicare Advantage members have an additional layer of protection: you can request a fast appeal if delaying surgery would seriously harm your health. Humana must respond to expedited Medicare Advantage appeals within 72 hours.

For commercial Humana plans, the ERISA and state insurance law frameworks govern as described above.

Filing a State Insurance Department Complaint

Alongside your appeal, file a complaint with your state's insurance commissioner if your plan is fully insured. The commissioner can investigate whether Humana's denial was consistent with state law and its own coverage standards. Many state commissioners require Humana to respond to complaints within 30 days, creating additional pressure to resolve your case.

Fight Back With ClaimBack

Humana surgical denials are a common starting point — not an ending point. The appeal process exists precisely because insurers make incorrect coverage decisions, and the tools to challenge those decisions are available to every member.

Start your free appeal →

Related Reading

• How to Write an Insurance Appeal Letter
• What Is Medical Necessity?
• Internal vs. External Insurance Appeal