What is uninsured motorist coverage? Definition and how it protects injury victims

Uninsured motorist coverage pays for your injuries when the driver who hit you has no insurance or takes off before anyone can identify them. The uninsured motorist coverage definition is plain enough, but what it does is bigger: it decides who covers your treatment when there’s no one left to bill. In 2023, 15.4% of U.S. drivers carried no insurance at all, the Insurance Research Council reports; Georgia runs higher, at 19.0%. Factor in the underinsured, and nationwide roughly one in three drivers is a risk you can’t plan around.

What is uninsured motorist (UM) coverage?

Uninsured motorist (UM) coverage kicks in when the at-fault driver has no insurance at all or flees and never gets identified. The classic hit-and-run. When you’re hit by an uninsured driver, the money doesn’t come from them; it comes from your own UM/UIM policy. Coverage splits in two: UM Bodily Injury handles medical bills, lost wages, and pain and suffering, while UM Property Damage takes care of the vehicle, though in many states that half won’t apply to a hit-and-run.

What is underinsured motorist (UIM) coverage — and how is it different?

Underinsured motorist (UIM) coverage fills a different gap: the at-fault driver has insurance, just not enough of it. Say a broken leg runs $80,000 in bills and the other driver carries a minimum $25,000 policy. Your UIM makes up the difference. In Georgia, an underinsured motorist claim isn’t a separate product. State law (O.C.G.A. § 33-7-11) writes the situation into the definition of an uninsured motor vehicle, so UM and UIM ride as one coverage.

By default, Georgia uses add-on: your limit sits on top of what the at-fault driver pays, while the reverse option, which subtracts their limit from yours, must be chosen in writing. Add-on is what makes stacking insurance coverage possible, letting UM/UIM limits across several cars or household policies combine into one pool.

When can you use UM/UIM coverage after an accident?

A handful of situations come up again and again. Most often, an uninsured driver hits you. It also steps in when the at-fault driver’s limit can’t cover your bills, and an injured passenger, pedestrian, or cyclist can lean on their own UM/UIM or, in Georgia, on a resident relative’s policy.

The hit-and-run is its own case. Under O.C.G.A. § 33-7-11, an unknown vehicle counts as uninsured, but UM only pays if there was physical contact or an independent witness backs up your account. And when the at-fault driver carried a token policy against much larger bills, it became an uninsured motorist settlement, where UIM covers the rest.

Common reasons insurers deny UM/UIM claims

A denial rarely arrives with an honest reason attached. Sometimes it’s a technicality: you reported the crash late, or the policy excludes damages already paid through medical payments coverage or workers’ comp. More often the fight is over substance, with the insurer disputing fault or downplaying how badly you were hurt. A separate trap waits for anyone who signs a release with the at-fault carrier without protecting their right to UIM. And sometimes it’s simpler than that: there’s no coverage at all, rejected when the policy was bought.

Georgia does give you leverage against stalling. If an insurer fails to pay within 60 days of a written demand and a court finds the refusal was made in bad faith, it can owe a penalty on top of the award: up to 25% of the recovery or $25,000, whichever is greater, plus attorney’s fees (O.C.G.A. § 33-7-11).

Kermani LLP handles UM/UIM cases on contingency, so you pay nothing until there’s a result. If an uninsured or underinsured driver crossed your path after a crash, call us and we’ll review your policy for free.