Can AI write my insurance claim appeal?

Half. AI drafts a strong, organized appeal letter. You have to supply the policy wording and documents, and check every fact.

Verdict: Half-bot · AI helps, you finish✓ Tested 2 times in Llama 3.3 70B · Oct 19, 2026Written for ChatGPT, Claude or Gemini

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Half-bot

01Why half-bot

  • Appeals follow a clear structure that AI handles well.
  • It can match the denial reason to the policy language you paste.
  • It can't know your policy or evidence unless you provide them.
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02The prompt

Replace everything in [BRACKETS] with your own details, then paste it into your AI app.

prompt.txt
Help me write an insurance claim appeal letter. Firm, organized, factual.

Claim number: [NUMBER]
What happened: [SHORT DESCRIPTION WITH DATES]
Reason given for the denial: [PASTE THE DENIAL WORDING]
Relevant policy section: [PASTE IT]
Evidence I have: [photos, receipts, estimates, etc.]

Write the letter (under 400 words) with: a clear request, a point-by-point answer to the denial reason, and a list of attachments.
Rules: use only the facts and policy text I pasted. NEVER invent policy language or deadlines. Mark gaps as [NEED: ...].

03Steps

  1. Paste the exact denial reason and policy section.
  2. Fill any [NEED] gaps.
  3. Send it the way your insurer's denial letter says appeals must be sent, before their deadline.

04What can go wrong

  • Appeals have deadlines. Find yours in the denial letter.
  • For large claims, a public adjuster or attorney may be worth it.

05What to use

Any major AI chat app: ChatGPT, Claude or Gemini. The free tier works.

06Our test runs

2 runs, each with a different made-up sample. 2 of 2 passed every check.

Run 1 · Llama 3.3 70B · graded by GPT-OSS 120BSep 30, 2026Passed

The made-up sample:

  • [NUMBER]CLM-2023-0456
  • [SHORT DESCRIPTION WITH DATES]On March 12, 2024, a severe hailstorm damaged the roof of my home at 123 Maple Ave, causing water intrusion on March 13, 2024.
  • [PASTE THE DENIAL WORDING]Your claim is denied because the damage is deemed to be a result of normal wear and tear, which is excluded under Section 4.2 of your policy.
  • [PASTE IT]Section 4.2 – Exclusions: The insurer will not cover loss or damage caused by normal wear and tear, gradual deterioration, or lack of maintenance. Covered perils are listed in Section 3.1. This exclusion applies when the loss is not the direct result of a covered peril.
  • [photos, receipts, estimates, etc.]Photos of roof damage (dated 03/12/2024), contractor’s estimate ($8,750), receipt for emergency tarps ($250), water damage assessment report ($1,200).
  • [NEED: ...]No additional information required.
  • Include a clear request
  • Provide point‑by‑point answer to denial
  • List attachments
  • Letter under 400 words (268 words, counted by code)
  • Didn't make up details we never gave it

What came back (excerpt):

The reason given for the denial was that the damage is deemed to be a result of normal wear and tear, which is excluded under Section 4.2 of my policy. However, I disagree with this assessment.
Read the full answer
[Your Name]
[Your Address]
[City, State, ZIP]
[Email Address]
[Date]

[Insurance Company Name]
[Insurance Company Address]
[City, State, ZIP]

Re: Appeal of Claim Denial for CLM-2023-0456

Dear Claims Adjuster,

I am writing to appeal the denial of my insurance claim, CLM-2023-0456, for the damage to my home at 123 Maple Ave caused by a severe hailstorm on March 12, 2024. I respectfully request that you reconsider my claim and provide coverage for the damages.

The reason given for the denial was that the damage is deemed to be a result of normal wear and tear, which is excluded under Section 4.2 of my policy. However, I disagree with this assessment. The hailstorm that occurred on March 12, 2024, was a sudden and unexpected event that caused direct damage to my roof, leading to water intrusion on March 13, 2024. This is a covered peril under Section 3.1 of my policy. The damage was not the result of gradual deterioration or lack of maintenance, but rather a direct consequence of the hailstorm.

The evidence I have collected, including photos of the roof damage, a contractor's estimate, and a water damage assessment report, supports my claim that the damage was caused by the hailstorm and not by normal wear and tear. No additional information required.

I have attached the following documents to support my appeal:

* Photos of roof damage (dated 03/12/2024)
* Contractor's estimate ($8,750)
* Receipt for emergency tarps ($250)
* Water damage assessment report ($1,200)

I would appreciate it if you could review my appeal and the attached evidence. Please contact me if you require any additional information.

Sincerely,

[Your Name]

Check that no policy language beyond the provided text is added.

Run 2 · Llama 3.3 70B · graded by GPT-OSS 120BOct 19, 2026Passed

The made-up sample (a messier one):

  • [NUMBER]CLM-2024-0987
  • [SHORT DESCRIPTION WITH DATES]On March 12, 2024, a severe thunderstorm caused a large oak tree to fall on my driveway, damaging my 2022 Honda Accord and the concrete slab. The incident was reported to the city on March 13, and a police report was filed on March 14.
  • [PASTE THE DENIAL WORDING]We have reviewed your claim for damage to your vehicle and property resulting from the March 12, 2024 storm. According to the terms of your policy, coverage for damage caused by falling trees is excluded unless the tree was known to be hazardous prior to the event. As there is no evidence that the oak tree presented a known risk, we must deny your claim.
  • [PASTE IT]Section 12 – Perils Excluded: The insurer does not provide coverage for loss or damage caused by the fall of trees, vines, or other plants unless the loss is a direct result of a covered peril and the tree was identified as a hazard in a prior inspection. The policyholder is responsible for maintaining safe conditions on the insured premises.
  • [photos, receipts, estimates, etc.]Photos of the fallen tree and driveway damage (3 files); Repair estimate from XYZ Auto Body for the vehicle ($4,200); Concrete slab repair quote from BuildRight Contractors ($1,850); Police report (PDF); City tree removal invoice ($320).
  • [NEED: ...]NEED: Exact policy effective date and the name of the adjuster who issued the denial.
  • Include a clear request
  • Provide point‑by‑point answer to denial reason
  • Mark missing information with NEED placeholders
  • Didn't make up details we never gave it

What came back (excerpt):

I would appreciate it if you could review the evidence I have provided, which includes photos of the damage, repair estimates, and a police report. These documents demonstrate the extent of the damage and the circumstances surrounding the incident.
Read the full answer
[Your Name]
[Your Address]
[City, State, ZIP]
[Email Address]
[Date]

NEED: Adjuster's Name
Claims Department
[Insurance Company Name]
[Insurance Company Address]
[City, State, ZIP]

Re: Appeal of Claim Denial for CLM-2024-0987

Dear NEED: Adjuster's Name,

I am writing to appeal the denial of my insurance claim, CLM-2024-0987, which was denied due to the exclusion of coverage for damage caused by falling trees unless the tree was known to be hazardous prior to the event. I respectfully request that you reconsider my claim and provide coverage for the damages to my vehicle and property.

In response to the reason given for the denial, I would like to point out that the policy section cited (Section 12 – Perils Excluded) does indeed exclude coverage for loss or damage caused by the fall of trees unless the tree was identified as a hazard in a prior inspection. However, I would like to emphasize that the severe thunderstorm that caused the tree to fall is a covered peril. The fact that the tree was not previously identified as a hazard does not negate the fact that the damage was a direct result of a covered event.

I would appreciate it if you could review the evidence I have provided, which includes photos of the damage, repair estimates, and a police report. These documents demonstrate the extent of the damage and the circumstances surrounding the incident.

The following documents are attached to this letter:

* Photos of the fallen tree and driveway damage (3 files)
* Repair estimate from XYZ Auto Body for the vehicle ($4,200)
* Concrete slab repair quote from BuildRight Contractors ($1,850)
* Police report (PDF)
* City tree removal invoice ($320)

My policy, which was effective on NEED: Exact policy effective date, provides coverage for damages resulting from severe thunderstorms. I believe that the damage to my vehicle and property should be covered under this policy, and I look forward to your reconsideration of my claim.

Thank you for your attention to this matter.

Sincerely,

[Your Name]

Check that no new policy language or dates are introduced.

How each run works: we fill the prompt with a made-up sample, run it once in Llama 3.3 70B, and GPT-OSS 120B grades the answer against the prompt's own rules. Word limits are counted by code, and every quote flagged as made up is checked against the full answer. Your results can differ. How we test.

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