Uninsured Motorist Claim in California: Four Kinds of Claims and What Each One Requires

Not every uninsured motorist claim is the same. A claim against a driver who simply had no insurance follows different rules than a claim over a hit-and-run, a claim against a driver whose policy was too small, or a claim by a passenger hurt during an Uber or Lyft trip. Each type has its own proof, its own conditions, and its own traps. Identifying which kind you have is the first thing to settle, because it decides what has to be done, by whom, and how soon.

Which Uninsured Motorist Claim Do You Have?

In every type, the overall deadline is the same: within two years of the accident, you must file suit against the at-fault driver, reach an agreement with the insurer, or formally demand arbitration by certified mail (Insurance Code section 11580.2, subdivision (i)).

Claim Type 1: The Driver Was Identified but Uninsured

This is the most straightforward uninsured motorist claim. You must show the other driver was at fault and that no bodily injury liability insurance applied. California law also counts a vehicle as uninsured when its insurer denies coverage, or accepts it only conditionally, and when the insurer becomes insolvent within a year of the accident. Ask for any denial in writing; it becomes part of your proof.

What to gather: the police report, the other driver’s information, photos, witness names, and the denial letter if there is one.

Claim Type 2: A Hit-and-Run Uninsured Motorist Claim

When nobody knows who the driver was, the Insurance Code adds three conditions:

1. The injury arose from physical contact between the unknown vehicle and you or the vehicle you were in.
2. The accident was reported within 24 hours to the city police department, or in unincorporated areas to the county sheriff or the local California Highway Patrol office.
3. Within 30 days after that, you or someone for you filed a sworn statement with your insurer explaining that you have a claim against a driver who can’t be identified, with facts supporting it.

These are strict. If you’re hurt and can’t report within 24 hours yourself, someone else can report on your behalf. Keep the report number and a copy of the sworn statement.

Claim Type 3: An Underinsured Uninsured Motorist Claim

A driver is “underinsured” under California law only if their liability limits are lower than the uninsured motorist limits on your own vehicle. The order of events matters:

• Exhaust first. Underinsured coverage applies only after the liability limits of every at-fault vehicle’s policy have been paid through settlement or judgment, and you’ve sent your insurer proof of payment.
• Get consent. Resolving the case against the at-fault driver, by settlement or judgment, before your insurer agrees in writing can cost you the coverage.
• Share the lawsuit. When a lawsuit is filed against the at-fault driver, hand your insurer a copy of the complaint promptly, by personal service or certified mail.
• Expect a credit. Your insurer’s maximum is your underinsured limit, reduced by whatever the responsible parties already paid you.

Claim Type 4: A Rideshare Passenger’s Uninsured Motorist Claim

If an uninsured or underinsured driver hit the Uber or Lyft you were riding in, the rideshare company’s coverage comes first. Under Public Utilities Code section 5433, the company must provide uninsured and underinsured motorist coverage from the moment a passenger gets in until the passenger gets out. It is primary over any other uninsured motorist coverage and is solely the company’s obligation. Since January 1, 2026, the required amount is $60,000 per person and $300,000 per incident. Whether your own policy adds anything depends on its terms. Passenger scenarios are covered in car accident while riding in Uber.

What Happens When the Insurer Disagrees

If you and the insurer can’t agree on fault or the amount, the law requires arbitration before a single neutral arbitrator rather than a jury trial against your own insurer. A few points shape how that goes:

• Starting it. Send a written demand for arbitration by certified mail with a return receipt, addressed to the insurer or the agent it has registered to accept legal papers.
• Discovery. Both sides can use depositions, interrogatories, and requests for admission, and subpoenas are available.
• The insurer’s requests. The insurer can request wage loss information, medical record releases, and a medical examination it arranges. Not responding in time can delay the arbitration.
• Workers’ compensation. If the injury also involves a workers’ compensation claim, the arbitration generally waits until the condition is permanent and stationary.
• Finishing it. Arbitration must generally be concluded within five years of being started, unless the parties agree in writing to extend that or another statutory exception applies.

Mistakes That Can Sink an Uninsured Motorist Claim

• Waiting more than 24 hours to report a hit-and-run to law enforcement
• Accepting the at-fault driver’s policy limits without your insurer’s written consent
• Letting two years pass without a lawsuit, agreement, or certified-mail arbitration demand
• Ignoring the insurer’s requests for records or an exam
• Assuming your own policy pays first after a rideshare crash

A protective rule works in your favor: if you don’t have a lawyer and your claim is pending, the insurer has to warn you in writing of the time limit no later than 30 days before it expires. A missing warning pushes the limit out to 30 days after the warning finally arrives.

Money the Insurer May Subtract, and What It Can’t Demand

The policy can reduce the payment by medical payments coverage paid or owed, by workers’ compensation benefits, and by what you can collect from someone else covered by that same policy. The insurer can’t make payment depend on your signing away rights under other applicable insurance, and it can’t hold up payment while liability is sorted out among other insurers.

Damage to Your Car Is a Separate Uninsured Motorist Claim

The injury coverage stops at your body. Vehicle damage falls under a separate, narrower coverage set out in Insurance Code section 11580.26:

• Without collision coverage, it pays the car’s actual cash value or $3,500, whichever is less. With collision coverage, it can cover the collision deductible.
• It requires physical contact, and the uninsured driver or vehicle must be identified, by name or license plate.
• The accident must be reported to your insurer or agent within 10 business days, and a disputed claim must go to arbitration within one year.
• It doesn’t pay for loss of use.

For claim handling that crosses into unreasonable conduct, see bad faith insurance claims. For background on the coverage itself, see uninsured motorist coverage in California.

Talk With Vaksman Khalfin About Your Uninsured Motorist Claim

Vaksman Khalfin, PC can help sort out which kind of uninsured motorist claim you have and what it requires, including arbitration. Representation is on contingency, and the written agreement states the fee percentage and, separately, how case costs are handled. Phone (650) 250-0705.

Reviewed by Alan D. Khalfin, Partner and Managing Attorney, Vaksman Khalfin, PC (admitted in California). Last reviewed: 10/08/2026