Insurance Denied Your Surgery? Appeal Steps & Options

The letter arrives with a single word that changes everything: DENIED. Below it, in smaller print, the reason: "not medically necessary at this time." Your surgeon — a board-certified specialist who has examined you, reviewed your imaging, and documented your symptoms — says you need the operation. A claims adjuster who has never met you decided otherwise.

If this sounds familiar, you are not alone. A 2024 Kaiser Family Foundation analysis of ACA Marketplace plans found that insurers denied about 19% of in-network claims and 37% of out-of-network claims, averaging roughly 20% overall. In some plans, denial rates were far higher. And "not medically necessary" is one of the most common reasons given.

Here is what the insurance company is counting on: that you will accept the denial and give up. Most people do. The same KFF analysis found that fewer than 1% of denied claims were appealed. The process is designed to exhaust you.

This article explains what "not medically necessary" actually means, how to build a strong appeal, what to do if appeals fail, and how some patients resolve the problem through self-pay options including surgery abroad.

What Does "Not Medically Necessary" Actually Mean?

When an insurance company says a procedure is "not medically necessary," it is not saying you do not need it. It is saying that, according to its clinical guidelines and utilization review criteria, the procedure does not meet the threshold for coverage.

Common reasons for this determination include:

• Conservative treatment not fully exhausted: The insurer believes you should try more physical therapy, medications, or injections before surgery, even if your doctor says those approaches have failed.
• Step therapy requirements: Many plans require you to try cheaper treatments in a specific order before approving surgery.
• Timing disagreements: The insurer may believe surgery is premature, even though waiting could worsen your condition.
• Diagnostic criteria: The insurer may have specific thresholds for imaging findings, lab values, or pain scores that your case does not quite meet.
• Experimental or investigational classification: Some newer procedures may be classified as not yet proven effective by the insurer's medical policy.
• Coding errors: Sometimes the denial results from incorrect procedure codes (CPT) or diagnosis codes (ICD-10) submitted by your doctor's office.

What Should You Do First After a Denial?

Before you can fight the denial, you need to know precisely what the insurer is objecting to.

Request these documents immediately:

• The denial letter in full — read every word, including the fine print about appeal rights
• The clinical rationale — the specific medical policy or guideline used to make the decision
• The utilization review notes — notes from the insurer's reviewing physician
• Your plan's appeal procedure — the steps, deadlines, and requirements for appealing

Call your insurer's member services line and ask specifically: "What clinical criteria did you use, and what additional documentation would change your decision?" Write down the name of every representative you speak with, the date, and the answer given.

How Do You File an Internal Appeal?

Your first appeal goes through the insurance company itself. Under Affordable Care Act rules, you typically have 180 days from the denial date to file.

How to build a strong appeal:

• Get your surgeon involved. Ask for a "Letter of Medical Necessity" that directly addresses the insurer's stated reasons. It should include your clinical history, conservative treatments attempted and their outcomes, relevant imaging and test results, peer-reviewed literature supporting the procedure, and a clear statement of what will happen if surgery is delayed.
• Request a peer-to-peer review. Ask your surgeon to speak directly with the insurer's reviewing physician. Many denials are reversed at this stage because the insurer's reviewer is often a generalist who cannot effectively argue with the specialist treating you.
• Submit additional documentation. If the denial was based on missing information, such as a recent MRI, submit it with your appeal.
• Include a personal statement. Describe how the condition affects your daily life, work, sleep, and mental health. Humanize the case.
• Meet all deadlines. Missing a deadline can forfeit your rights.

A 2024 KFF analysis found that insurers upheld their original denial in about two-thirds of internal appeals, meaning roughly one-third were resolved in the consumer's favor. Strong documentation and specialist involvement improve those odds.

What Is an External Review and How Do You Request One?

If the internal appeal is denied, you have the right to an external review by an independent third party. This is a critical right that many patients do not know about.

How external review works:

• Under the Affordable Care Act, all non-grandfathered health plans must provide external review
• An independent review organization, not the insurer, reviews your case
• The IRO's decision is binding on the insurance company
• You do not need a lawyer to request external review
• The review is free to you

Filing for external review:

• Contact your state's insurance department or the federal Department of Health and Human Services
• File within the required timeframe after the internal appeal denial
• Provide all medical records, the denial letter, the internal appeal decision, and supporting documentation

A recent analysis of New York independent review cases found that external review reversed approximately 47% of denials. For some categories, such as home health care, reversal rates exceeded 78%.

Can You File a Complaint with Your State Insurance Commissioner?

If the denial feels unfair or the process feels rigged, file a complaint with your state insurance commissioner's office. They can:

• Investigate whether the insurer followed proper procedures
• Mediate between you and the insurer
• In some cases, compel the insurer to reconsider
• Identify patterns of improper denials that may affect other consumers

You can find your state insurance commissioner through the National Association of Insurance Commissioners website.

What Are Your Self-Pay Options If Appeals Fail?

If you have exhausted your appeal rights and the denial stands, you still need the surgery. Here are your self-pay options:

Negotiate cash-pay pricing

Many hospitals and surgery centers offer significant discounts for self-pay patients. Ask for:

• The self-pay rate or cash price, often 20-50% below the chargemaster price
• A bundled price that includes surgery, anesthesia, facility fees, and follow-up care
• A prompt-pay discount if you can pay upfront

Surgical financing

Options include medical credit cards, personal loans, and hospital financing programs. Be cautious of deferred-interest traps and compare total costs before borrowing.

Consider a different procedure code

Sometimes the denial is about the specific procedure requested, not surgery in general. Ask your surgeon whether an alternative approach or different coding might meet the insurer's coverage criteria. This is not about gaming the system — it is about understanding the insurer's clinical framework and working within it.

Is Surgery Abroad a Realistic Alternative?

When insurance denies your surgery and US self-pay would cause financial distress, surgery abroad becomes a legitimate option worth considering. You have already established three important things:

• Your doctor believes the surgery is medically necessary
• Conservative treatment has been attempted and failed
• The denial is an insurance coverage decision, not a medical judgment

Cost comparison

The same surgery can cost 60-80% less abroad than the US cash price. Here are typical ranges:

Major Chinese hospitals are internationally recognized. Peking Union Medical College Hospital, Beijing Jishuitan Hospital, and Zhongshan Hospital Shanghai are among the institutions that handle complex surgeries. Several Chinese hospitals hold JCI accreditation, the same international standard used to evaluate hospitals worldwide.

After surgery in China, patients often have access to integrated recovery protocols that combine Western physical therapy with Traditional Chinese Medicine modalities such as acupuncture and herbal medicine. This integrated recovery model may reduce opioid use and support functional improvement.

What Legal Options Do You Have?

If you believe the denial was wrongful, you may have legal recourse:

• ERISA claims: If your insurance is through an employer, the Employee Retirement Income Security Act governs your appeal rights. You may be able to sue in federal court after exhausting internal and external appeals.
• State law claims: Some states allow patients to sue insurance companies for bad-faith denial of coverage.
• Patient advocacy organizations: Groups such as the Patient Advocate Foundation provide free case management and can help navigate complex denials.

Consult a healthcare attorney who specializes in insurance denial cases. Many offer free initial consultations and work on contingency.

What Resources Can Help You Fight a Denial?

• Patient Advocate Foundation (patientadvocacy.org) — free case management for insurance denials
• American Medical Association — state-specific appeal guides
• National Association of Insurance Commissioners (naic.org) — find your state insurance commissioner
• Dollar For (dollarfor.org) — help with hospital financial assistance
• Centers for Medicare & Medicaid Services (cms.gov) — federal appeals guidance

How We Help

Frequently Asked Questions

What does "not medically necessary" mean from an insurance company?

It means the insurer's clinical guidelines and utilization review criteria do not meet the threshold for covering the procedure. It is a coverage decision, not a medical judgment that you do not need surgery.

How long do I have to file an internal appeal for a denied surgery?

Under Affordable Care Act rules, you typically have 180 days from the date of the denial letter to file an internal appeal. Missing this deadline can forfeit your appeal rights, so act promptly.

What are the chances of winning an internal appeal?

A 2024 KFF analysis of ACA Marketplace plans found that insurers upheld their original denial in about two-thirds of internal appeals, meaning roughly one-third were resolved in the consumer's favor. Strong documentation and a surgeon's letter of medical necessity improve the odds.

What is an independent external review?

An independent external review is conducted by a third-party review organization not affiliated with your insurer. Under the Affordable Care Act, non-grandfathered plans must offer this option, and the IRO's decision is binding on the insurance company.

Can I sue my insurance company for denying surgery?

If you believe the denial was wrongful, you may have legal recourse. Employer-sponsored plans are generally governed by ERISA, which allows federal lawsuits after appeals are exhausted. Some states also permit bad-faith claims against insurers. Consult a healthcare attorney for guidance specific to your plan.

Is surgery abroad safe if my insurance denies coverage?

Surgery abroad can be safe when performed at accredited hospitals with documented outcomes. Several major Chinese hospitals hold JCI accreditation, the same international standard used worldwide. The key is thorough vetting of the hospital, surgeon, and continuity-of-care plan.

Is the case review really free?

Yes. OrientHealthLink's initial case review is free and without obligation. The coordination team reviews your denial, medical history, and surgical needs to assess whether surgery abroad is a realistic option for your situation.

What documents do I need for a surgery appeal?

Gather the denial letter, your plan's appeal procedures, all relevant imaging and test results, records of conservative treatments attempted, a letter of medical necessity from your surgeon, and a personal statement describing how the condition affects your daily life.

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