The Difference Between an Uninsured and an Underinsured Motorist Claim

If you were injured in a car crash in California and the person who caused the crash either didn’t have insurance or didn’t have enough of it, you might be able to file a claim through your own auto insurance policy. But whether your situation qualifies as an uninsured motorist claim or an underinsured motorist claim depends on one very important difference: Did the at-fault driver have no insurance at all, or just not enough? That difference determines how and whether your insurance company has to pay you.

Below, experienced car accident lawyers at Law Offices of Samer Habbas & Associates explain what that means under California law—and why it matters to your case.

Why Uninsured and Underinsured Motorist Coverage Matters

Roughly 1 in 6 drivers in California are uninsured, and many more carry only the state’s minimum liability limits—which is often nowhere near enough to cover serious injury or property damage. If you’re hit by one of these drivers, the financial burden could fall entirely on you unless you have uninsured (UM) coverage or underinsured motorist (UIM) coverage. These types of policies help protect you when the at-fault driver can’t. They can cover your medical bills, lost income, and other losses when the responsible party is unable or unwilling to pay.

What to Do If the Other Driver Is Uninsured

If the other driver had no insurance at the time of the crash, your situation likely falls under what’s known as an uninsured motorist claim, or UM claim. This is governed by California Insurance Code § 11580.2.

This type of claim applies in two main situations: one, when the driver who hit you simply didn’t carry any liability insurance at all; and two, when you were hurt in a hit-and-run and you don’t know who the driver is.

The law allows your own insurer to step in and pay for damages such as medical bills, lost wages, and pain and suffering—basically, the money you would have gotten from the other driver’s insurer if they had coverage. But you still have to prove that the other driver was at fault and that they were uninsured. And just because the driver fled the scene doesn’t mean your insurer will automatically pay; you have to report the hit-and-run quickly and give your insurer all the information required under your policy.

What is Underinsured Motorist Coverage?

Now let’s say the driver who caused the crash did have liability insurance, but it wasn’t enough to cover your losses. In that case, you’re dealing with what’s called an underinsured motorist claim, or UIM claim.

The key here is that you can only use your UIM coverage if your own policy limit is higher than the amount of insurance the at-fault driver had. For example, if the other driver had a $15,000 policy and your total damages are $100,000, your UIM coverage can potentially pay the remaining amount—but only if your own policy goes above $15,000.

Your insurer is typically only required to pay the difference between what the other driver’s insurance pays and the total amount of your damages, up to your own UIM coverage limits.

Importantly, you usually have to get written permission from your insurer before accepting an underinsured motorist coverage settlement from the at-fault driver’s insurer. If you take the other driver’s insurance payout without doing this, your insurer may refuse to pay you under your UIM coverage—even if you would have otherwise qualified.

Why the Difference Between UM and UIM Matters

• First of all, in an uninsured claim, you deal directly with your own insurer from the start. In an underinsured claim, you have to go through the at-fault driver’s insurance first and try to settle with them before your own insurer will consider paying anything.
• Second, the rules around settlement are different. In an uninsured case, once you prove the other driver didn’t have insurance, your insurer can pay you and close the claim. In an underinsured case, if you don’t follow the right steps—like getting your insurer’s consent before settling with the at-fault driver—you may end up forfeiting your right to any more compensation.
• Third, the amount you can recover may be different. In a UM claim, you can recover up to the limits of your own UM coverage, assuming your damages are high enough. In a UIM claim, your insurer only pays the amount that exceeds the at-fault driver’s policy—again, up to your own coverage limits.

What the Law Says About Time Limits and Deadlines

Uninsured and underinsured motorist claims come with strict deadlines—some of which are shorter than the general personal injury statute of limitations in California, which is two years under California Code of Civil Procedure section 335.1.

Your auto insurance policy might require you to give notice of a UM or UIM claim within 30 days of the crash or within a “reasonable time.”

In addition, most UM/UIM policies require that any dispute over payment be resolved through arbitration, not a lawsuit. The deadline to demand arbitration—if needed—can also be short.

What If You’re Not Sure What Kind of Claim You Have?

It’s not always obvious whether the driver who hit you was uninsured or just underinsured. In hit-and-run cases, for instance, there may be no way to identify the driver unless witnesses or cameras captured the incident. Even if the driver stopped and gave you their insurance card, that doesn’t mean the policy was active—or that it will be enough to cover your injuries.

You may not find out until weeks or months later that the at-fault driver’s insurance isn’t going to be enough. That’s why it’s important to notify your own insurance company as soon as possible, even if you think the other driver’s coverage might take care of things.

What to Do After an Accident with an Uninsured or Underinsured Driver

After the crash, call the police and get a report. Take photos, gather witness contacts, and seek medical attention—even for minor injuries. Notify your insurer right away about a potential UM or UIM claim. Avoid giving recorded statements without speaking to a lawyer first. These claims are complex, and mistakes can reduce your payout.

Contact Orange County Uninsured / Underinsured Motorist Accident Lawyer Samer Habbas

If you or someone you care about was injured in a crash with a driver who had no insurance or not enough, you may be able to recover compensation through your own policy—but only if the claim is handled properly. These cases are time-sensitive, and missing a step could affect the outcome.

To learn your rights under California law, contact Law Offices of Samer Habbas & Associates by calling 949-727-9300 or contacting us online for a free consultation with an uninsured motorist accident lawyer in Orange County. Get Samer on your side to fight for the full compensation you deserve.