Overview
Uninsured underinsured motorist coverage protects California drivers when the at-fault driver has little or no insurance. Many accident victims worry that filing a UM/UIM claim will increase their premiums. This guide explains how UM/UIM coverage works, when to use it, and how California law protects policyholders from unfair insurance rate increases.
Table of contents:
Uninsured underinsured motorist coverage (UM/UIM) is a type of auto insurance protection that helps cover your financial losses if you are injured in a crash caused by a driver who has no insurance or not enough insurance to fully pay for the damages.
California requires minimum liability coverage of only $15,000 per person/$30,000 per accident for bodily injury, and $5,000 for property damage (15/30/5). These limits are often insufficient to cover serious injuries, which is why UM/UIM coverage is critical.
As a result, many accident victims discover that the at-fault driver’s policy does not cover all medical expenses, lost income, or auto vehicle damage. UM/UIM coverage fills this gap by allowing you to recover compensation through your own policy when the negligent driver cannot pay.
UM/UIM coverage in California covers bodily injury only, which may include:
- Medical expenses
- Lost wages
- Pain and suffering
- Rehabilitation costs
Property damage from an uninsured motorist is covered by a separate optional coverage called Uninsured Motorist Property Damage (UMPD), which has a mandatory $3,500 deductible. However, most drivers use their collision coverage instead to repair vehicle damage, as it typically has a lower deductible.
Why UM/UIM Coverage Is Critical for California Drivers
- Large medical bills
- Out-of-pocket repair costs
- Lost wages during recovery
- Difficulty obtaining compensation
When You Should Use UM/UIM Coverage
UM/UIM coverage typically applies in several common accident scenarios. You may need to use this coverage if:- The at-fault driver has no insurance
- The at-fault driver has minimum coverage that is insufficient
- The driver flees the accident scene (hit-and-run)
- Medical expenses exceed the negligent driver’s policy limits
- Report the accident to the police within 24 hours (Vehicle Code § 20002)
- File a claim with your insurer within 30 days of the accident
- Provide corroborating evidence that the accident occurred (witness statements, photos, damage assessment)
Example Scenario: Accident With an Uninsured Driver
Imagine you are driving through an intersection when another vehicle runs a red light and crashes into your car. The other driver is clearly at fault. However, after exchanging information, you discover the driver does not have active insurance coverage. Without uninsured underinsured motorist coverage, you may have to:- Pay medical bills out of pocket
- Cover vehicle repairs yourself
- File a lawsuit against the at-fault driver
- Risk of never recovering the full cost of your damages
Will My Insurance Rates Increase After a UM/UIM Claim?
Many drivers hesitate to file a UM/UIM claim because they fear their insurance premiums will increase. Under California Insurance Code § 1758.85, insurance companies cannot cancel or refuse to renew your policy solely because you filed a UM/UIM claim. Additionally, California law limits the factors insurers can use to set rates. Under Proposition 103 (Insurance Code § 1861.02), rates must be primarily based on:- Your driving safety record
- Miles driven annually
- Years of driving experience
- Driving history
- Age
- Vehicle type
- Mileage
- Prior claims history
Factors That May Affect Insurance Premiums
Although UM/UIM claims themselves are not supposed to increase premiums after non-fault accidents, insurance companies still consider several variables when calculating insurance rates.Age
Younger drivers typically pay higher insurance premiums due to limited driving experience. Premiums generally stabilize in middle age before increasing again for older drivers.Driving History
Insurance companies heavily evaluate driving records. A clean history with no accidents or violations typically results in lower premiums.Vehicle Type
Vehicles with high repair costs, high theft rates, or poor safety records may carry higher insurance premiums.Parking Location
Where a vehicle is parked overnight can also affect risk assessment. Cars parked on the street or in high-crime areas may result in higher premiums.Vehicle Usage
Drivers who commute long distances or drive frequently may face higher insurance costs because increased mileage raises accident exposure.How Insurance Companies Try to Discourage UM/UIM Claims
Insurance companies sometimes discourage policyholders from using their uninsured underinsured motorist coverage. Some common tactics may include:- Suggesting your premiums will increase
- Delaying the claims process
- Questioning the severity of injuries
- Pressuring victims to accept low settlements
How a California Personal Injury Lawyer Can Help
After an accident involving an uninsured or underinsured driver, recovering fair compensation can be complicated. Insurance companies may challenge medical treatment, dispute liability, or undervalue the full cost of injuries. An experienced California personal injury lawyer can:- Investigate the accident
- Gather medical and insurance documentation
- Communicate directly with insurance adjusters
- Calculate the full value of your damages
- Negotiate for a fair settlement or pursue litigation if necessary
Frequently Asked Questions
Uninsured motorist coverage and underinsured motorist coverage are protections included in many auto policy options that help pay for damages when the at-fault driver in a motor vehicle accident has little or no insurance. This coverage may compensate victims for bodily injury, medical bills, lost wages, and other losses when the negligent driver lacks adequate liability coverage.
California law does not require drivers to carry uninsured motorist coverage, but insurance companies must offer it when issuing an auto policy. Drivers can decline the coverage in writing. However, many legal professionals strongly recommend retaining this protection because it helps cover bodily injury expenses when another driver lacks liability coverage or adequate insurance.
California Insurance Code § 11580.2 requires insurance companies to offer UM/UIM coverage to every policyholder. The coverage must be offered in amounts equal to your liability limits unless you reject it in writing.
If you don’t explicitly reject it, you automatically have UM/UIM coverage equal to your liability limits. Many drivers don’t realize they already have this protection.
Yes. Underinsured motorist coverage applies when the negligent driver’s liability coverage exists, but the coverage limits are too low to fully compensate the victim after a motor vehicle accident. In this situation, your uninsured motorist coverage may help pay the remaining damages after the at-fault driver’s insurance policy reaches its coverage limits.
Uninsured motorist coverage can help pay for bodily injury damages such as medical treatment, rehabilitation costs, lost wages, and pain and suffering after a motor vehicle crash. Depending on your auto policy, it may also cover certain property losses. However, collision coverage typically handles vehicle repair costs when your car is damaged in an accident.
Yes. Although uninsured motorist coverage comes from your own auto policy, insurance companies still evaluate claims carefully and may dispute the value of bodily injury damages. A California personal injury lawyer can review coverage limits, communicate with insurers, and ensure your liability coverage and uninsured motorist benefits are properly applied.
Protect Your Rights After an Accident
If you were injured in a crash caused by an uninsured or underinsured driver, your financial recovery should not depend on someone else’s lack of insurance.
At Farahi Law Firm, our experienced accident lawyers help accident victims across California navigate uninsured and underinsured motorist coverage claims and fight for the compensation they deserve. We work directly with medical providers, investigate insurance policies, and aggressively negotiate with insurance companies that attempt to undervalue legitimate claims.
Our goal is simple: help you obtain the medical care you need and the financial recovery you deserve.
We offer free consultations, and you pay nothing unless we win your case.
Call (844) 824-2955 today to speak with a trusted LA personal injury lawyer and learn how we can help protect your rights after an accident.


