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Car Crash Claims: How the Insurance Filing Process Works

After a car accident, filing a claim is usually the first formal step toward recovering your losses. But the process isn't one-size-fits-all. How a claim works — and what you can recover — depends on your state's fault rules, the coverage involved, the severity of injuries, and the specific facts of the crash.

Here's how the process generally works.

First-Party vs. Third-Party Claims

The type of claim you file depends on whose insurance you're dealing with.

A first-party claim is filed with your own insurance company. This applies when you're using your own coverage — such as collision, Personal Injury Protection (PIP), or MedPay — regardless of who caused the crash.

A third-party claim is filed against the at-fault driver's liability insurance. You're essentially making a claim against someone else's policy, which means the other insurer represents their customer's interests — not yours.

In no-fault states, drivers are generally required to file with their own insurer first, using PIP coverage to pay for medical expenses and lost wages, regardless of who caused the accident. In at-fault (tort) states, the person responsible for the crash bears primary financial liability, and injured parties typically file against that driver's liability policy.

How Fault Is Determined

Insurers investigate crashes to determine who was responsible. Common sources include:

  • Police reports — often the first document an adjuster reviews
  • Witness statements
  • Photos and video evidence
  • Vehicle damage assessments
  • Recorded statements from involved parties

How fault affects your claim depends heavily on your state's negligence rules:

Fault RuleHow It Works
Pure comparative faultYou can recover damages even if you were mostly at fault; your award is reduced by your percentage of fault
Modified comparative faultYou can recover only if your fault falls below a threshold (often 50% or 51%)
Contributory negligenceIn a small number of states, any fault on your part can bar recovery entirely
No-faultYour own insurer pays certain losses up to policy limits, regardless of fault

Roughly a dozen states operate under no-fault rules. The rest use some form of at-fault or tort-based system. The specific rule in your state directly shapes what you can claim and from whom.

What Damages Are Generally Recoverable 💡

Car crash claims typically involve two categories of damages:

Economic damages — measurable financial losses:

  • Medical bills (emergency care, hospitalization, therapy, ongoing treatment)
  • Lost wages and reduced earning capacity
  • Property damage (vehicle repair or replacement)
  • Out-of-pocket expenses related to the accident

Non-economic damages — harder to quantify:

  • Pain and suffering
  • Emotional distress
  • Loss of enjoyment of life

In no-fault states, tort thresholds often limit when you can step outside the no-fault system to pursue pain and suffering damages. These thresholds may be monetary (medical expenses exceeding a set amount) or verbal (injuries meeting certain severity criteria like permanent disfigurement or serious impairment). The rules vary by state.

How Medical Treatment Fits Into a Claim

Medical documentation is central to any injury claim. The records created throughout your treatment — from the initial ER visit through follow-up care, imaging, physical therapy, and specialist consultations — form the factual basis for calculating medical damages.

Gaps in treatment can become a point of dispute. Insurers sometimes argue that delayed or inconsistent care suggests injuries weren't serious or weren't caused by the accident. Whether that argument holds weight depends on the specific facts, the medical evidence, and how the claim is evaluated.

MedPay and PIP coverage can help pay medical bills as they arise, often without waiting for fault to be resolved. These coverages vary in what they include, their limits, and whether they're mandatory in your state.

Coverage Types That Commonly Apply ⚖️

CoverageWhat It Generally Covers
LiabilityPays the other party's damages when you're at fault
PIP (Personal Injury Protection)Your own medical costs and sometimes lost wages; required in no-fault states
MedPayMedical expenses for you and passengers; available in most states
Uninsured Motorist (UM)Covers your losses if the at-fault driver has no insurance
Underinsured Motorist (UIM)Covers the gap when the at-fault driver's coverage is insufficient
CollisionRepairs your vehicle regardless of fault

Coverage limits, deductibles, and whether certain coverages are required or optional all differ by state and policy.

How Settlements Are Calculated

Once treatment is complete (or the injury picture is clear), the claims process typically moves toward resolution. An adjuster evaluates the claim using medical records, bills, proof of lost income, and other documentation.

A demand letter is often sent by the injured party — or their attorney — outlining the damages and requesting a specific settlement amount. Negotiation follows. Most claims settle without litigation, though timelines vary widely.

Common terms in this phase include:

  • Subrogation — your insurer's right to recover what it paid you from a responsible third party
  • Diminished value — a claim for the reduced market value of a repaired vehicle
  • Lien — a claim against your settlement by a healthcare provider or insurer who covered your treatment

When Attorneys Get Involved

Personal injury attorneys who handle car accident cases typically work on a contingency fee — meaning they collect a percentage of the settlement or verdict, usually between 25% and 40%, only if the case resolves in the client's favor. The exact percentage varies by attorney and state.

Legal representation is commonly sought when injuries are serious, fault is disputed, the insurance company denies or undervalues the claim, or multiple parties are involved. An attorney can manage communications, gather evidence, and negotiate with insurers — but whether representation makes sense depends on the specific circumstances.

Statutes of Limitations and Reporting Requirements

Every state sets a statute of limitations — a deadline for filing a lawsuit if the claim doesn't settle. These deadlines vary by state (commonly between one and four years) and can differ based on whether the claim involves personal injury, property damage, or a government vehicle. Missing the deadline typically bars the claim entirely.

Some states also require drivers to file accident reports with the DMV within a set period, particularly when injuries or damages exceed certain thresholds. Serious accidents may trigger SR-22 requirements — a certificate of financial responsibility that some drivers must carry for a period following certain violations or crashes.


How all of this applies to any specific crash — what coverage is available, how fault is allocated, what damages are recoverable, and how long the process takes — turns entirely on the state involved, the policies in place, the nature of the injuries, and the facts as they actually unfolded.