Table of Contents
- Start With the Injury Claim Denial Letter
- How to Appeal an Insurance Claim Denial Step by Step
- What to Say When Insurance Denies a Claim (and What to Avoid)
- Evidence Needed to Appeal an Insurance Denial
- Deadlines That Can Sink Your Appeal
- Writing a Formal Appeal Letter After an Injury Claim Denial
- What to Do While Your Appeal Is Pending
- When to Bring in a Personal Injury Attorney
- Frequently Asked Questions
Last Updated: October 18, 2026
Start With the Injury Claim Denial Letter
An injury claim denial is not the end of your case. At Cummings Law, we tell clients to read that document twice before they call anyone. (Source: the National Association of Insurance Commissioners (NAIC))
The letter states a reason. That reason is your roadmap. It usually falls into one of a few buckets:
- No liability: The insurer says their policyholder was not at fault.
- Causation: They admit an accident happened but deny it caused your injuries.
- Pre-existing condition: They claim your injury predates the accident.
- Insufficient evidence: They say you have not proven the loss.
- Late filing: They claim you missed a notice or filing deadline.
- Policy exclusion: A specific term in the policy removes this loss from coverage.
Decoding Common Denial Reasons and Policy Language
Policy language decides most disputes. Words like “causation,” “liability,” and “exclusion” are not filler. Each one shifts the burden onto you.
Read the cited policy section, not just the denial summary. If the letter says “insufficient evidence,” the insurer is telling you exactly what to send next. If it cites an exclusion, check whether that exclusion actually applies to your facts.
Request the full claim file, including the adjuster’s notes. Insurers sometimes deny on a template reason that does not match the internal notes, and that gap is useful in an appeal.
How to Appeal an Insurance Claim Denial Step by Step
An appeal is not a complaint. It is a structured request that the insurer re-examine a specific decision against specific evidence. The sequence below is the one most practitioners use, but the mechanics change depending on whether you are dealing with a first-party, third-party, auto, or health claim.
- Identify the claim type and the appeal track. First-party claims go through your own insurer’s internal review. Third-party claims go back to the at-fault party’s adjuster as a demand for reconsideration. Health claims follow the plan’s internal appeal, then external review. Auto claims may layer personal injury protection (PIP), medical payments (MedPay), collision, and uninsured/underinsured motorist (UM/UIM) coverage, each with its own review path.
- Calendar every deadline the same day. Put the policy appeal date, any state-mandated appeal window, and the statute of limitations for a lawsuit on one calendar. Treat the earliest date as the real one.
- Request the complete claim file and the policy in writing. Ask for the adjuster’s notes, the valuation or reserve history, and the specific policy sections cited in the denial. Many insurers will produce these on request; some require a written demand.
- Map each denial reason to a piece of evidence. If the letter says “causation,” send treatment records, imaging, and a physician’s narrative linking the accident to the injury. If it says “insufficient evidence,” send the proof of loss, bills, and expense records. If it cites an exclusion, quote the exclusion and explain why the facts fall outside it.
- Write a formal appeal letter that quotes the denial. State the denial date, the claim number, the exact reason quoted from the letter, your dispute in one paragraph, and an itemized enclosure list.
- Send it with proof of delivery. Certified mail with return receipt, or the insurer’s portal with a screenshot of the confirmation page. Keep the receipt with your file.
- Log every contact. Date, name, title, and a one-line summary of what was said. This log becomes evidence if the dispute escalates.
First-Party, Third-Party, Auto, and Health Claims Work Differently
A first-party claim is against your own policy, such as collision coverage, MedPay, or PIP.
A third-party claim is against the at-fault party’s insurer.
Auto claims can involve several coverages at once. PIP and MedPay are first-party and follow the policy’s internal appeal.
Health claims run through the plan’s internal appeal, then, for most plans, an external review by an independent review organization.
Ask the adjuster, in writing, which appeal track applies and what the deadline is. If the answer is vague, send your appeal anyway and note in the letter that you are preserving all rights under the policy and applicable law.
What Internal and External Review Actually Do
Internal review means a different adjuster or a review committee at the same insurer re-examines the file. It is fast and inexpensive, but it is still the insurer reviewing itself.
For third-party liability claims, there is no external review. The realistic paths are a stronger demand package, a bad-faith claim where state law allows it, or a lawsuit filed before the statute of limitations runs.
What to Say When Insurance Denies a Claim (and What to Avoid)
Keep every conversation short and factual. Say the date of loss, the claim number, and that you dispute the stated reason. Then ask for the appeal process in writing.
Avoid these:
- Guessing about your injuries or treatment
- Saying “I’m fine” or “it’s not that bad”
- Giving a recorded statement without preparation
- Arguing about fault on the phone
- Accepting a quick settlement before you know your full losses
A recorded statement can be used later to contradict your medical records. If an adjuster asks for one, say you will respond in writing and speak with an attorney first.
Evidence Needed to Appeal an Insurance Denial
Strong appeals are built on documents, not opinions. Collect this:
- Complete medical records and treatment notes
- All medical bills and out-of-pocket expenses
- Accident photos and scene photos
- Police report and witness statements
- Repair estimates or property damage proof
- Pay stubs or records showing lost income
Send copies, never originals. Keep a full set for yourself.
| Denial Reason | Evidence to Send | What It Proves |
|---|---|---|
| No liability | Police report, witness statements, scene photos | The other party caused the crash |
| Causation disputed | Treatment records, imaging, doctor’s note | The accident caused the injury |
| Pre-existing condition | Before-and-after medical history | The injury is new or worsened |
| Insufficient evidence | Bills, proof of loss, expense records | The loss is real and documented |
| Late filing | Proof of notice date, correspondence | You met the deadline |
Deadlines That Can Sink Your Appeal
Miss the appeal window and the denial becomes final.
Clock 1: The policy appeal deadline. Most policies set a short window, often 30, 60, or 90 days from the date of the denial letter.
Clock 2: State-mandated appeal and external review rights. State insurance rules can add or extend appeal rights, especially for health claims and some auto and property lines.
Clock 3: The statute of limitations. This is the legal deadline for filing a lawsuit, not an appeal.
How to Calculate and Preserve Each Deadline
Start from the date on the denial letter, not the date you received it, unless the letter or state rule says otherwise. Count calendar days, not business days, unless the policy specifies business days.
Put all three dates on one calendar with reminders at 30, 14, 7, and 2 days before each. Send the appeal early enough that proof of delivery is in hand before the deadline, not on the deadline.
If a deadline is unclear, treat the earliest possible date as the real one and send the appeal before it. A premature appeal can be supplemented; a late one usually cannot.
What Happens If You Miss a Deadline
If you miss the policy appeal deadline, the insurer can close the file and treat the denial as final. Some insurers will still accept a late appeal as a courtesy, but you cannot count on it. If you miss a state-mandated external review window, you may lose that review right.
The practical rule is to preserve the earliest deadline first, document the date you sent notice, and keep the receipt.
Writing a Formal Appeal Letter After an Injury Claim Denial
An appeal letter should be one page, factual, and tied to the denial. Use this template:
[Your name]
[Address] | [Phone] | [Email]
[Date][Insurer name]
[Claims department address]Re: Appeal of Denial, Claim No. [number], Date of Loss [date]
Dear [Adjuster name],
I am appealing the denial dated [date] for claim number [number]. The denial states [quote the reason].
I dispute this because [one clear explanation]. Enclosed please find [list each document].
Please reconsider this decision and confirm receipt of this appeal in writing within [number] days. I reserve all rights under the policy and applicable law.
Sincerely,
[Signature]
[Printed name]Enclosures: [list]
Send it certified mail with return receipt, or through the insurer’s portal with a screenshot of confirmation.
What to Do While Your Appeal Is Pending
Keep treating your injuries. Gaps in care are the fastest way to weaken a claim, because insurers read them as proof you recovered.
Also:
- Continue documenting symptoms and expenses
- Respond to insurer requests in writing, on time
- Do not sign a release or settlement while the appeal is open
- Avoid posting about the accident on social media
- Check in with the adjuster every couple of weeks, in writing
The appeal is a paper trail. Every letter, receipt, and record you keep makes the next step, whether negotiation or court, stronger.
When to Bring in a Personal Injury Attorney
Bring in a lawyer when the denial cites liability or causation, when the appeal deadline is close, or when your injuries are serious. Those are the cases where a wrong word costs real money.
Cummings Law handles injury claim denial appeals and personal injury cases on a contingency basis, which means no attorneys’ fees or court fees until the case is complete.
Frequently Asked Questions
What are the odds of winning an insurance appeal?
There is no reliable public figure for appeal success rates, and outcomes vary widely by insurer, claim type, and the strength of your documentation. What matters more is preparation: appeals that include a written explanation request, complete medical records, accident photos, and a formal appeal letter tend to fare better than bare reconsideration requests. If your injury claim denial cites insufficient evidence, supplying the missing records and a clear causation argument gives the reviewer something concrete to reverse the decision on. An attorney can assess your specific denial and tell you whether an internal appeal, external review, or legal action is the stronger path.
What should I avoid saying to an insurance company after a denial?
Skip recorded statements, guesses about fault, and casual comments about your recovery. Avoid saying you feel ‘fine’ or that your injuries are ‘not that bad,’ since adjusters document those phrases and later use them to argue your damages are minimal. Do not speculate about pre-existing conditions or offer opinions on liability. Keep communication in writing where possible, stick to facts you can document, and refer the adjuster to your medical records rather than summarizing treatment yourself. If an adjuster pushes for a recorded call, you can decline and ask for questions in writing instead.
What documents should I gather to challenge an injury claim denial?
Build a claim file with the denial letter itself, your full policy, and every medical record and bill tied to the injury, including treatment notes, imaging, and discharge instructions. Add accident photos, the police report, witness statements, and repair estimates if a vehicle was involved. A proof of loss form and any correspondence with the adjuster belong in the file too. If the denial cites a pre-existing condition, request records from before the accident to show the contrast. Organize everything chronologically and keep copies of what you send, since the appeal record is what the reviewer will rely on.
Should I contact a lawyer if my injury claim is denied?
It is worth a consultation, especially if the denial cites causation, a pre-existing condition, or a policy exclusion you do not understand. An attorney can read the denial letter, check whether the appeal deadline is approaching, and tell you whether internal review or external review fits your claim type. Legal help matters most when medical bills are climbing, liability is disputed, or the insurer’s offer falls far short of your damages. Cummings Law handles personal injury and medical malpractice cases on a contingency basis, with no attorneys’ fees until the case resolves.
A denied claim is a setback, not a verdict. If you are facing an injury claim denial and the deadlines are closing in, do not wait for the insurer to change its mind. Cummings Law offers a consultation, contingency-fee representation, and a team that gathers the evidence and fights for the recovery your injuries deserve. Call for a consultation and get a clear read on your options.
