Founders & Small BusinessFree

Insurance Claim Appeal Letter Generator

Send the insurer's letter, your policy, and your proof, and get an appeal or supplemental claim letter that answers them point by point.

Insurance Claim Appeal Letter

[Your name, or your business's legal name]
[Mailing address]
[Phone] | [Email]

[Date of this letter]

Sent by [certified mail, return receipt requested, or email to the claims address in the denial letter] [Keep proof of the date you sent it.]

[Adjuster's name], [Adjuster's title]
[Insurance company name]
[Claims department mailing address]

Re: Request for reconsideration of denied claim

Named insured: [Name exactly as it appears on the declarations page]
Policy number: [Policy number]
Claim number: [Claim number]
Date of loss: [Date of loss]
Insured property or vehicle: [Property address, or vehicle year, make, model and VIN]
Denial letter: [Date of the denial letter, and whether it denies all or part of the claim]

Dear [Adjuster's name]:

I am writing to ask [Insurance company name] to reconsider its decision, in your letter dated [date of denial letter], to deny [all / part] of the claim above. The policy covers this loss for the reasons set out below, and I ask you to reverse the denial and pay the claim.

1. What happened

[Two to four sentences of plain fact: what was damaged, when and how it happened, when you found it, and what you did to prevent further damage.]

I reported the loss on [date reported] by [phone / online / to your agent, name]. [Name of adjuster or inspector] inspected on [date of inspection].

2. The reason given for the denial

Your letter gives this reason for the denial:

"[Quote the denial reason exactly, word for word, and note the page or paragraph of the letter.]"

The letter relies on [the policy form number, section, and name of the exclusion, condition, or limitation the insurer cited].

[If the letter gives more than one reason, list each one here and answer each in section 4. The Denial Reason Map sheet lines them up side by side.]

3. The policy language that supports coverage

Coverage grant. The policy states: "[Quote the insuring agreement or coverage section that covers this kind of loss.]" ([Form number], page [page], section [section])

The provision the denial relies on. The full wording is: "[Quote the entire exclusion, condition, or limitation the insurer cited, not only the part in the denial letter.]" ([Form number], page [page])

Why it does not apply here. [Explain in plain terms why the facts of this loss fall outside that provision, and point to the evidence. Example: the exclusion is for damage that happened slowly over time, and the plumber's report says the pipe burst on one day.]

Other policy terms that matter. [Any exception to the exclusion, additional coverage, or endorsement listed on the declarations page that changes the result. Delete this paragraph if there is none.]

4. Response to each denial reason

Reason 1: [Short name for the reason]

What the denial says: "[Quote]"
Why it does not apply: [Your answer, tied to the policy wording above]
Evidence: Exhibit [letter]

Reason 2: [Short name for the reason] [Delete if the letter gives only one reason.]

What the denial says: "[Quote]"
Why it does not apply: [Your answer]
Evidence: Exhibit [letter]

5. Evidence enclosed

Exhibit A: Denial letter dated [date]
Exhibit B: Declarations page and the policy pages quoted above ([form numbers])
Exhibit C: [Number] photos of the damage, taken on [dates]
Exhibit D: [Report or estimate from a contractor, mechanic, engineer, or other professional], dated [date]
Exhibit E: [Invoices, receipts, police or fire report, weather report, or repair records]
Exhibit F: Log of calls, emails, and inspections on this claim

[Send copies and keep the originals. Number every page so the adjuster can cite it.]

6. What I am asking for

Reverse the denial and accept coverage for [the loss / the specific items denied].
Pay [$ amount] based on [Exhibit D], less the [$ deductible] deductible. [Or, if the amount is not yet known: resume adjusting the claim and send a written estimate.]
If you uphold any part of the denial, explain in writing the specific policy provisions and facts you rely on for each part, and send copies of any reports, estimates, photos, or statements the decision is based on.
If you need anything else to decide, tell me in writing exactly what it is.

7. Response requested

Please respond in writing by [response date]. [Choose a date that fits your state's claim handling time limits and any appeal deadline stated in the denial letter. These rules vary by state.]

I also ask that [Insurance company name] handle this request within the time limits set by [state] law. [Cite a specific statute or regulation only after you have checked it.]

Please send all communication about this claim to [email or mailing address].

Nothing in this letter waives any of my rights under the policy or the law.

Sincerely,

[Signature]
[Printed name]
[Title, if writing for a business]
[Business name, if any]

Enclosures: Exhibits A to [last exhibit letter]
cc: [Your insurance agent or broker, if any]

Notes for you, delete before sending:

Check the policy's "Suit Against Us" or "Legal Action Against Us" condition for a time limit to sue. Asking for reconsideration may not pause it.
If the insurer upholds the denial or does not answer, other options include a complaint to your state insurance department, a licensed public adjuster, or a lawyer. Each has different costs and limits. This template does not recommend one.
This template is a drafting aid, not legal advice.

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See the full Insurance Claim Appeal Letter template

Send the insurer's letter, your policy, and your proof, and pick the state where the loss happened. River fills one of two templates in place: the insurance claim appeal letter for a denied claim, or the supplemental insurance claim letter for a claim that was accepted but paid short. Each comes with a sheet that does the matching first, either denial reasons against policy wording, or the insurer's estimate against your contractor's, line by line.

Most appeal letters ask the insurer to take another look. This one answers the insurer's stated reason with the full policy provision and the exhibits that prove it, then asks for a written explanation of anything still refused. That request tracks the NAIC model unfair claims act, which lists failing to "promptly provide a reasonable and accurate explanation" of a denial or a compromise offer as an unfair practice. Each state writes such rules its own way, so River looks up yours.

It is built for homeowners, drivers, and small business owners with a property, auto, or commercial claim, in the weeks after a denial or a short check arrives. It is not for health insurance, which has its own internal appeal and external review process. River drafts and you decide what to send. If the denial shows a genuine gap in cover, the business insurance renewal review is where to close it before the policy renews.

Why claim deadlines depend on your state

There is no single national deadline for an insurer to answer a claim. The NAIC model act sets standards, such as acknowledging claim communications "with reasonable promptness", and each state writes its own numbers. Texas gives an insurer 15 days to acknowledge a claim and 15 business days after it has everything it asked for to accept or reject it, with one 45-day extension if it explains why. California generally allows 40 calendar days from proof of claim.

What a denial must say differs too. California's regulation requires a written denial to list every basis for it, explain how each cited policy provision applies, and tell you that the Department of Insurance can review it. That is why the letter quotes the insurer's reason exactly. In a fictional example, a bakery's burst pipe claim is denied as repeated seepage. The letter quotes the whole exclusion, including its exception, and attaches the plumber's invoice dating the burst.

If the insurer holds its position, the Texas Department of Insurance lists the options plainly: appraisal where the policy has it, a complaint to the department, a public adjuster who charges a fee, mediation, or a lawsuit. The letter names a complaint, a public adjuster, and a lawyer without recommending one. Before choosing, find the policy's time limit to sue, because a request for reconsideration may not pause it. Keep a copy of everything you send, with proof of the delivery date.

How it works

Share the letters
Paste or upload the denial or payment letter, the policy pages it cites, and your photos, estimates and invoices.
Pick the document
Choose the appeal letter for a denial, or the supplemental letter when the claim was paid short.
Choose your state
River looks up that state's claim handling rules and cites only the ones it can verify.
Review and send
Check every marked item, adjust the wording in chat, then print or email the letter yourself.

What you get

An appeal letter that quotes the denial reason and the full policy provision it relies on
A Denial Reason Map with one row per reason, so no stated reason goes unanswered
A supplemental claim letter comparing the insurer's estimate to your contractor's, line by line, with totals
Your state's claim handling rule looked up at the source and cited only when verified
One specific request and a response date, with anything unconfirmed clearly marked for you to check
A neutral note on appraisal, a state complaint, a public adjuster, or a lawyer, recommending none

Common questions

Which letter do I need, the appeal or the supplemental claim?

Use the appeal letter when the insurer refused to cover all or part of the loss. Use the supplemental claim letter when it accepted coverage but paid less than the documented cost, or when repairs uncovered more damage from the same loss. If you are unsure, pick either one and River will say if the other fits better.

Why does it ask which state the loss is in?

Claim handling rules are set state by state. The time an insurer has to acknowledge, decide, and pay, what a denial must explain, and any deadline for a supplemental claim all differ. River looks up the chosen state's rule in the statute, regulation, or insurance department site, and marks it for you to confirm if it cannot verify it.

Does River send the letter to my insurer?

No. River drafts the letter and its sheet in your workspace and never contacts the insurer, the adjuster, or anyone else. You read it, fix anything marked for you to confirm, and send it yourself, ideally by a method that gives you proof of the date it was delivered.

Can I use it for a health insurance denial?

No. This tool is written for property, auto, and commercial claims, such as a building, a vehicle, business equipment, or lost stock. Health plan denials go through a separate appeal and external review process with different rules, so this letter's structure and its state rule lookup would not fit them. River says so and stops if you send one.

What if I do not have the full policy?

Send what you have, usually the declarations page and the pages quoted in the denial letter. River fills the letter from those and marks any policy wording it could not read as something to confirm. Ask your agent or the insurer for a complete copy, because the exception that covers a loss can sit outside the excerpt.

Should I hire a public adjuster or a lawyer instead?

That is your call, and River does not recommend one path. A complaint goes to your state insurance department, a licensed public adjuster charges a fee to handle the claim, and a lawyer can advise on your rights and the time limit to sue. A well-documented letter is useful whichever route you take.

Is this legal advice?

No. It is a drafting aid that lays out your facts, the policy wording, and your evidence in the order an adjuster reads them. It does not decide whether your loss is covered or how a court would read the policy. For a large loss or a complex policy, have a lawyer or licensed public adjuster review the letter before you send it.

Sources

Built by

Chandler Supple

Co-founder & CEO, River

Chandler has spent the last six years working in AI, building tools for millions of users and Fortune 100 companies. In 2025, he co-founded River to build a new kind of operating system for AI agents.

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Reviewed by

Brian Joseff, Co-founder, River

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