How to Appeal a Denied Insurance Claim

The short answer: To appeal a denied insurance claim, get the denial in writing, read the stated reason and your deadline, gather your policy and evidence, and submit a written appeal to the insurer. If they still won't resolve it, escalate to your state's Insurance Commissioner — the regulator whose job is to handle exactly these complaints. A documented appeal, followed by escalation to the right authority, is how a wrong denial gets challenged.

What should I do first when a claim is denied?

Get the denial in writing and read it carefully. The denial letter states the reason for the decision and — critically — your deadline to appeal. Note that deadline immediately. Then gather your policy documents, the claim, and any evidence that contradicts the stated reason. Your appeal is only as strong as the record behind it.

How do I write an insurance appeal?

Write to the insurer, reference your policy and claim number, address the specific reason they gave for the denial, and attach your supporting evidence. Be factual and specific — point to the policy language or evidence that bears on the decision. Keep a dated copy of everything you send. A clear, documented appeal is far harder to dismiss than a phone call.

What if the insurer still won't pay?

This is where you escalate — and insurance has a clear authority for it: your state's Insurance Commissioner (or Department of Insurance). Every state has one, and handling consumer complaints against insurers is a core part of their job. You file a complaint with them, including your documented record of the denial and your appeal. The Commissioner can review the insurer's conduct.

Start documenting your denied claim →

What's the full escalation path for an insurance dispute?

It typically runs:

1. Appeal directly to the insurer in writing.
2. If unresolved, complain to your state Insurance Commissioner.
3. If still unresolved, state court or legal proceedings.

Each step is stronger when backed by the documented record from the step before. Knowing this path — and that a named regulator sits at level two — is what keeps a denial from being the end of the road.

How long do I have, and how long does it take?

Your appeal deadline is on the denial letter and is often strict — a figure commonly cited for health plans is 180 days, but the window that applies to you depends on your policy and your state, so check yours. Once you escalate to the Insurance Commissioner, their review has its own timeframe. The key is not to miss the insurer’s appeal deadline, because that can close the door before you reach the regulator.

When should I start documenting?

From the moment the claim is filed, and certainly the moment it is denied. Start with the denial letter, note your deadline, and record every contact and document from there. A complete, dated record is what makes both your appeal and any escalation to the Commissioner effective.