You got a denial for a medical procedure claim. It's frustrating, and it can hit your wallet hard. But you have the legal right to appeal. Under the Employee Retirement Income Security Act (ERISA) and the Affordable Care Act (ACA), group health plans must provide a clear and fair appeals process. Start by understanding why the claim was denied—the explanation of benefits (EOB) or denial letter must specify the reason: “not medically necessary,” “experimental treatment,” “out-of-network provider,” or “coding error.” That reason will shape your entire appeal strategy.
Step 1: Gather Your Documents
Assemble these documents first:
- The denial letter (with the claim number, dates, and rationale)
- Your health plan’s Summary Plan Description (SPD) or certificate of coverage
- Detailed medical records from your provider (including notes, test results, and diagnosis codes)
- A letter of medical necessity from your physician explaining why the procedure is essential
- Any peer-reviewed studies, clinical guidelines, or medical society recommendations that support the procedure’s effectiveness for your condition
Put together the package so your argument is based on facts, not emotions. Employers and third-party administrators respond best to evidence, not anecdotes. WellthCare is a zero-net-cost Health-to-Wealth Benefit System that works alongside your existing plan and aligns every incentive toward prevention, reducing the odds of denied claims through clear, compliance-grade processes.
Step 2: File a Standard Internal Appeal
First, you have to go through the internal appeals process. Submit your appeal to the insurance company or plan administrator within the time limit stated in your denial letter—typically 180 days for group plans under ERISA. Here's what to do:
- Write a formal appeal letter referencing the claim number, plan ID, and the specific reason for denial. Cite the relevant plan language and explain why the procedure meets medical necessity criteria.
- Include all supporting documents as described above, organized and clearly labeled.
- Request an “expedited appeal” if your health is at immediate risk (the plan must respond within 72 hours for urgent cases).
- Keep copies of everything you send and use certified mail or a secure portal to confirm receipt.
By law, the plan must respond within 30 days for non-urgent pre-service appeals and 60 days for post-service appeals. If they deny again, they must explain the reasons and inform you of your right to an external review.
Step 3: Request an External Independent Review
If the internal appeal is denied, you can request an external review by an independent third party not employed by the insurer or employer. Under the ACA, this option is available for all non-grandfathered group health plans. Your denial letter must explain how to request it, or you can contact your state’s insurance commissioner or the U.S. Department of Labor (for ERISA plans).
The reviewer has no financial stake in the outcome, which makes this a strong safeguard. If the reviewer overturns the denial, the plan must cover the procedure.
Step 4: Consider a “Second-Level” or “Special” Appeal
Some employer plans, especially self-funded ones, offer extra appeal levels. Review your SPD carefully—some allow a “final and binding” arbitration step. For certain preventive care denials under the ACA (e.g., a denied colonoscopy or mammogram), you may be able to file a complaint with the Department of Labor or seek a fiduciary breach claim if the plan failed to follow its own rules.
Common Reasons for Denial and How to Counter Them
- “Not medically necessary”: Provide a letter from your specialist detailing why the procedure is the standard of care for your diagnosis, and include supporting guidelines from authoritative bodies like the American Medical Association or National Institutes of Health.
- “Experimental or investigational”: If the procedure is emerging, gather peer-reviewed studies, FDA approvals for similar uses, and letters from professional societies that endorse it.
- “Out-of-network provider”: If no in-network provider offers the procedure, argue that the plan must provide access to “reasonable” care under the plan’s network adequacy rules. Some plans have a “balance billing” or “continuity of care” exception.
- “Coding error or missing documentation”: Work with your provider to resubmit the claim with corrected codes or additional records. Often the simplest fix.
When to Get Professional Help
If the claim denial involves a high-cost procedure, a chronic condition, or a complex plan design, consider hiring a healthcare advocate or an attorney specializing in ERISA benefits litigation. Many advocates work on a contingency basis (only get paid if you win). Additionally, state insurance departments and nonprofit legal aid clinics can provide free guidance for certain cases.
What’s Different if You Have a WellthCare Plan?
If your employer uses WellthCare, the appeals process may be more streamlined because of the preventive-first architecture. With WellthCare, claims usually go through $0-co-pay preventive care first, so routine denials happen less often. But for complex procedures, the same ERISA and ACA standards apply. WellthCare’s patent-pending Readiness Index™ can also help employers identify high-cost claims early, but it does not change your individual right to a fair appeal. If you are on a WellthCare plan, your SPD will include specific appeal timelines and contact information for the claims administrator.
Final Pro Tips
- Don't stop at the first denial. Over 60% of appeals win at the external review stage.
- Document every interaction with the insurer, including names, dates, and what was said.
- Keep it professional in all communications—emotional language weakens your credibility.
- If you're an employer, ensure your plan’s denial and appeal procedures are fully compliant with ERISA and ACA regulations, as improper denials can lead to penalties and fiduciary liability.
Appealing a denial is your right, and preparation is your best weapon. Get the right documents. Write a solid internal appeal. Request an external review on time. That'll boost your odds of overturning the denial and getting the care you need.