Ask the insurer for the denial in writing, identify the specific policy term and facts behind it, and respond with evidence that addresses each stated reason. If reconsideration does not resolve the dispute, you can contact your state insurance department—but separately check any arbitration and court deadlines. A regulator complaint does not necessarily preserve those deadlines.
Start by identifying why the insurer denied the claim
“Denied” can refer to different disputes, and the next step depends on which one you have. New Jersey’s Department of Banking and Insurance distinguishes a denial based on lack of coverage from one based on lack of liability; other states may handle disputes differently. Read the denial letter closely. If it does not explain the insurer’s reasoning, ask in writing for the specific policy language and factual basis it relied on.
- Coverage: The insurer says the policy does not cover this loss or that an exclusion or condition applies.
- Insured status: The insurer says you are not an insured under the policy.
- Liability: The insurer disputes whether the uninsured driver was legally responsible.
- Evidence or damages: The insurer says the records do not establish the loss or support the amount claimed.
- Notice or another condition: The insurer says a policy requirement or deadline was not met.
These categories can overlap. Note every reason the insurer gives so you can address each one, rather than sending a general objection.
Compare the denial with your policy and organize the evidence
Use the denial letter and the complete policy together, including endorsements. Locate the uninsured motorist (UM) or underinsured motorist (UIM) insuring agreement, definitions, exclusions, conditions, notice requirements, arbitration clause, and any limitation language. The policy wording and your state’s law both matter; a denial letter alone does not establish whether the insurer’s interpretation is correct.
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Create a dated timeline from the crash through the claim submission, insurer communications, and denial. Keep a copy of the policy and denial with your supporting records. The National Association of Insurance Commissioners (NAIC) recommends gathering policy details, documentation, bills, and communication records when preparing a complaint. California’s auto guidance specifically identifies documentation of injuries, medical expenses, and lost wages for a UM claim; that is California guidance, not a rule for every state.
- Accident and police records, photographs, and witness contact details.
- Records relevant to the other driver’s uninsured or underinsured status.
- Medical records and bills, proof of lost wages, and other loss or expense records.
- All claim correspondence, call notes, submission dates, and proof of delivery.
Preserve originals and send copies unless the insurer or agency specifically requires otherwise. Keep a dated log of calls and submissions.
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Request reconsideration in writing
There is no single internal appeal route established for every UM claim; the process can depend on your policy and state. Still, a focused written request gives the insurer a clear opportunity to review the dispute and creates a record of your position.
- List each reason in the denial letter.
- For each reason, identify the relevant policy wording and explain the facts that you believe apply.
- Attach the records that support your response, labeling them so the insurer can tell what each document shows.
- State the decision or payment you are asking the insurer to reconsider.
- Keep a full copy and proof of delivery, and record the date you sent it.
If the insurer’s explanation is unclear, first ask it to identify the specific provision and facts it relies on. NAIC complaint guidance recommends using policy language and assembling supporting documentation when describing an insurance problem.
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Escalate to your state insurance department if the dispute remains unresolved
The NAIC advises consumers to try to resolve the issue with the insurer first, then contact the state insurance department if they remain dissatisfied. State departments may review complaints involving matters such as unfair claim denials, delays, or failure to honor a policy. The process and the agency’s authority vary by state, and a complaint is not a guarantee of payment.
Use the NAIC directory of state insurance departments to find your agency, then follow that department’s filing instructions. The NAIC’s complaint guidance recommends providing policy details, a factual account, relevant documents and bills, and records of communications. Explain the denial reason and the steps you have already taken with the insurer.
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A regulator complaint is a separate review channel. Do not assume it pauses or extends an arbitration or lawsuit deadline. California’s Department of Insurance also says California consumers may contact it when a UM insurer is unresponsive or claim handling appears unreasonably delayed; that advice is specific to California.
Check arbitration and lawsuit deadlines promptly
Do not rely on a single nationwide deadline for UM or UIM disputes. The time limit and procedure can depend on state law, policy language, the type of claim, when the other driver’s coverage was denied, and whether the dispute must go to arbitration or court. Check the policy’s arbitration and limitation sections immediately, and confirm the applicable rule with your state insurance department or a local attorney.
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New Jersey regulator guidance describes arbitration when the parties cannot agree whether the insured is legally entitled to recover or on the amount of damages. Whether arbitration applies to a coverage denial, or is mandatory, depends on the policy and controlling law. New Jersey’s guidance also directs claimants to preserve the applicable statute of limitations.
Arizona Revised Statutes § 12-555 is one state-specific example that sets written-notice and arbitration-or-suit timing rules for UM/UIM benefits. California guidance describes written notice of applicable time periods that may be relied on to deny a claim, including a particular notice period for first-party UM claimants. Neither state’s rules should be applied outside its jurisdiction.
If a deadline may be near, seek local legal advice promptly rather than waiting for the insurer or regulator to respond. A complaint with the state department should not be treated as a substitute for a required court filing or arbitration demand.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Choose the route that fits the dispute
Different processes address different issues. The New Jersey guidance illustrates why it is important to distinguish a coverage question from a disagreement about liability or damages; rules elsewhere may differ.
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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errors| Route | What it may address | What to check |
|---|---|---|
| Insurer reconsideration | The insurer’s reasons for denying coverage or disputing liability, evidence, or damages. | Policy terms, the denial’s factual basis, and any review process or deadline. |
| State insurance department complaint | Complaint review of claim handling under the state department’s process and authority. | Correct agency, filing instructions, supporting records, and separate legal deadlines. |
| Arbitration | Some UM disputes, depending on the policy and applicable law; New Jersey guidance describes certain entitlement and damages disagreements. | Whether arbitration applies to this issue, whether it is mandatory, and the demand deadline. |
| Court | A legal dispute that must or may be brought in court under the governing policy and law. | Applicable limitation period, required notices, and whether arbitration must come first. |
For a complex coverage dispute or a deadline-sensitive claim, a local attorney experienced in insurance coverage or personal injury law can help assess the applicable policy and state procedures.
Quick Recap
Official state and national resources
- NAIC: How to File a Complaint
- NAIC: Insurance Departments directory
- New Jersey Department of Banking and Insurance: Filing an Uninsured/Underinsured Motorist Claim
- Arizona Revised Statutes § 12-555
- California Department of Insurance: So You’ve Had an Accident, What’s Next?
- California Department of Insurance: 2026 Guide for Adjusting Property Claims in California After a Major Disaster
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