Auto Insurance Claims Terminology Defined

Understanding the language of auto insurance claims is one of the most practical things you can do before — or during — a claim. Adjusters, attorneys, and repair shops use these terms precisely, and knowing what they mean helps you ask the right questions and protect your interests. These definitions reflect standard industry usage; your insurer's specific policy language governs in all cases.

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Claims Adjuster (Staff, Independent, and Public)

A claims adjuster is the professional who evaluates a claim and determines what the insurer owes. Staff adjusters are employees of the insurance company. Independent adjusters are freelancers or contractors hired by insurers to handle overflow or specialized work — they still represent the insurer, not you. Public adjusters are professionals you hire to represent your interests in negotiating with the insurer; they typically charge a percentage of the settlement. If you believe the insurer's offer is too low, a public adjuster or attorney can help you push back. See filing a claim for more on the adjuster's role in the process.

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Appraisal Clause

An appraisal clause is a policy provision that gives both you and your insurer a way to resolve disagreements over the dollar value of a loss without going to court. Each side hires its own appraiser, and if those two cannot agree, they jointly select a neutral umpire whose decision is binding. Invoking appraisal is not an admission that a claim is valid or invalid — it only addresses the amount. Check your declarations page or policy to see whether your coverage includes this clause and what the procedures are.

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Actual Cash Value (ACV)

Actual cash value is what your vehicle — or a specific damaged component — was worth at the moment of the loss, taking depreciation into account. It is roughly what you could have sold the item for on the open market the day before the accident. Insurers use ACV to calculate payouts under most standard auto policies unless you have purchased replacement cost coverage. Because depreciation can significantly reduce the payout, ACV settlements often feel lower than expected, especially on older vehicles.

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Replacement Cost Value (RCV)

Replacement cost value is the amount it would cost to replace a damaged or destroyed item with a new one of the same kind and quality, without any deduction for depreciation. RCV coverage is more common in homeowners insurance than auto, but some gap or endorsement products for newer vehicles use replacement cost principles. If your policy pays ACV rather than RCV and your car is financed, gap insurance can cover the difference between the settlement and your loan balance.

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Depreciation

Depreciation is the reduction in a vehicle's value over time due to age, wear, mileage, and market conditions. Insurers apply depreciation when calculating ACV payouts. For example, a five-year-old vehicle with 80,000 miles is worth considerably less than it cost new, and the insurer's settlement reflects that reduced value. Depreciation schedules and methodology vary by insurer; if you disagree with the amount applied, you can request the adjuster's calculation and contest specific line items.

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Deductible

A deductible is the portion of a covered loss that you agree to pay before your insurer pays the rest. If your vehicle sustains $4,000 in damage and your collision deductible is $500, you pay $500 and the insurer pays $3,500. Deductibles apply per claim, not per year. A higher deductible lowers your premium but increases your out-of-pocket cost after an accident. You generally do not pay a deductible when you are filing a third-party claim against someone else's liability coverage.

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Fault Determination

Fault determination is the process by which the insurer (or insurers, if multiple parties are involved) decides who was legally responsible for causing the accident and to what degree. Evidence used includes police reports, photos, witness statements, and traffic laws. In states that use comparative negligence rules, fault can be split — for example, 70% to one driver and 30% to the other — and payouts are adjusted proportionally. Fault determinations affect both claim payments and future premiums.

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First-Party vs. Third-Party Claim

A first-party claim is a claim you file with your own insurance company under your own policy — for example, using your collision coverage after an accident regardless of who was at fault, or your comprehensive coverage after a theft. A third-party claim is a claim you file against another person's insurance policy, typically when that person's negligence caused your loss. Third-party claims are paid from the at-fault driver's liability coverage. The process and timelines differ between the two. See filing a claim for a step-by-step walkthrough of each path.

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Subrogation

Subrogation is the legal right your insurer acquires — after paying your claim — to step into your shoes and pursue reimbursement from the party who caused the loss. If another driver hit your car and your collision coverage paid for the repairs, your insurer may then seek that money back from the at-fault driver's liability insurer. Subrogation benefits you indirectly because it allows your insurer to recover funds that may be returned to you as a deductible refund if they succeed. Do not settle with or release the at-fault party on your own before your insurer has resolved the subrogation process, or you may inadvertently waive their right to recover.

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Reservation of Rights Letter

A reservation of rights letter is written notice from your insurer that it is investigating your claim and may provide a defense or temporary payment, but has not yet determined whether coverage applies. It is not a denial. The letter preserves the insurer's ability to deny the claim later if it finds that the policy does not cover the loss. If you receive one, read it carefully and consider consulting an attorney, as it signals that coverage is in question.

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Proof of Loss

A proof of loss is a formal sworn statement you submit to your insurer describing the circumstances of the loss and the dollar amount you are claiming. Many policies require you to submit a proof of loss within a specific timeframe — often 60 to 90 days — and failure to do so can give the insurer grounds to deny the claim. The form typically requires supporting documentation such as receipts, repair estimates, and photos. Your insurer will provide the required form if you ask.

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Independent Medical Examination (IME)

An independent medical examination is a physical evaluation of an injured claimant ordered by the insurer and conducted by a physician the insurer selects. Despite the word "independent," the doctor is paid by the insurance company and the results often favor the insurer. Insurers use IMEs to challenge the necessity or extent of treatment claimed. If you are asked to attend an IME in connection with a bodily injury claim, consider speaking with a personal injury attorney beforehand.

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Maximum Medical Improvement (MMI)

Maximum medical improvement is the point at which a treating physician determines that a claimant's condition has stabilized and is unlikely to improve further with continued treatment. Reaching MMI is significant in personal injury claims because it signals that future medical costs can be estimated and that a final settlement figure can be calculated. Settling a bodily injury claim before you reach MMI can be risky — once you sign a release, you typically cannot reopen the claim if your condition worsens.

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Settlement

A settlement is a mutually agreed resolution of a claim in which the insurer pays a specified amount and the claimant accepts it as full satisfaction of the claim. Settlements can cover vehicle damage, medical expenses, lost wages, pain and suffering, or some combination. Once accepted, settlements are usually final and binding. Before accepting any settlement offer — particularly on a bodily injury claim — make sure you understand what you are giving up and that the amount reasonably covers all your actual and anticipated losses.

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Release of Liability

A release of liability is the legal document you sign when accepting a settlement, in which you agree to give up any further claims arising from the incident in exchange for the payment received. Signing a release is typically irreversible. Read it carefully before signing: it should accurately describe the parties, the incident, and the scope of what is being released. If the release language is broader than the specific claim you are settling, ask that it be narrowed before you sign.

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Total Loss

A vehicle is declared a total loss when the cost to repair it exceeds a threshold set by state law or insurer guidelines — often somewhere between 70% and 100% of the vehicle's ACV. When a total loss is declared, the insurer pays you the ACV of the vehicle (minus your deductible) rather than paying repair costs. You may be offered the option to retain the salvaged vehicle at a reduced payout. If you disagree with the ACV the insurer assigns, you can negotiate or invoke the appraisal clause if your policy includes one. See filing a claim for guidance on the total loss process.

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Salvage Title

When a vehicle is declared a total loss and the insurer takes ownership, they typically sell it at salvage auction. The vehicle then receives a salvage title — a brand on the title record that permanently indicates the vehicle was written off as a total loss. If the vehicle is subsequently repaired and passes a state inspection, it may receive a rebuilt or reconstructed title, but the salvage history remains part of the permanent record. Vehicles with salvage or rebuilt titles are harder to finance, insure, and sell, and typically carry significantly lower market values.

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Diminished Value

Diminished value is the reduction in a vehicle's market value that persists even after repairs are completed. A car that has been in an accident — even if properly repaired — is generally worth less than a comparable vehicle with a clean history. There are three recognized categories: inherent diminished value (the stigma from accident history alone), repair-related diminished value (from incomplete or inferior repairs), and immediate diminished value (the difference in value immediately after the accident, before repairs). In most states you can pursue a diminished value claim against an at-fault driver's liability insurer; claims against your own insurer are more limited and depend on state law and policy language.