How do I appeal a denied insurance claim?

Request the denial in writing with the specific policy exclusion cited, then file a formal written appeal with supporting documentation — if the insurer upholds the denial, you can escalate to your state's department of insurance.

Claim denials happen for a variety of reasons — some are legitimate policy exclusions, others are errors or disputes about coverage. You have formal appeal rights under both your policy contract and state insurance law. The NAIC's consumer complaint process is the authoritative backstop when internal appeals fail.

Step 1 — Get the denial in writing

If your claim is denied verbally or via a brief letter, request a formal written denial that cites the specific policy provision or exclusion being applied. This is your right as a policyholder. The written denial tells you exactly what ground you're fighting on.

Step 2 — Review the cited policy language

Pull out your declarations page and the full policy document. Find the exact exclusion or provision the insurer cited. Read it carefully — insurers sometimes misapply exclusions, or the coverage dispute may turn on ambiguous language that courts often interpret in favor of the policyholder.

Step 3 — Gather documentation to counter the denial

Photos, videos, and inspection reports showing the loss.
Contractor or repair estimates from licensed professionals.
Police, fire, or weather service reports (for losses where applicable).
Medical records or bills (for injury or health claims).
Expert opinions if the dispute is technical (structural engineer, forensic accountant).
Any communication history with the insurer about the claim.

Step 4 — File a formal written appeal

Most insurers have a formal internal appeals process. Submit a written appeal letter that: (1) identifies the claim number and denial date, (2) states the grounds for your appeal, (3) attaches all supporting documentation, and (4) requests a response within a specific timeframe (typically 30 days). Send via certified mail and keep a copy.

Step 5 — Escalate to your state department of insurance

Every state has a Department of Insurance (DOI) with a consumer complaint unit. If the internal appeal fails, file a complaint with your state DOI. Insurers are regulated at the state level and must respond to DOI inquiries. Many disputes are resolved at this stage without litigation. The NAIC's consumer complaint map links to every state DOI.

Optional: hire a public adjuster or attorney

For large losses, a licensed public adjuster (who works for you, not the insurer) or a policyholder rights attorney can significantly improve your outcome. Public adjusters typically charge 10–15% of the final settlement; many insurance attorneys work on contingency.

Appeal rights and process

All 50 state insurance departments accept consumer complaints about denied claims and can compel insurers to respond and reconsider. — NAIC — Consumer Complaint Center
Ambiguous language in an insurance policy is typically interpreted in favor of the policyholder under the doctrine of contra proferentem, applied by courts across most jurisdictions. — NAIC — Consumer Resources
The FTC advises consumers to document all communications with insurers during a dispute, including the name, date, and substance of every conversation. — FTC — Consumer Resources

Key takeaways

Get the denial in writing with the specific policy provision cited — you need to know exactly what's being disputed.
Read the policy language carefully; exclusions are sometimes misapplied.
Build your documentation file before filing the appeal: photos, repair estimates, expert reports.
File a formal written appeal and give the insurer a response deadline.
Escalate to your state DOI if the internal appeal fails — it's free and regulators take these seriously.

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