The Other Driver Had $25,000 in Coverage. Your Own Policy May Owe You the Rest.
There is a specific moment in a lot of Colorado injury claims where the case appears to end. The liability carrier accepts fault, agrees the injuries are real, and then explains that their insured carried minimum limits. The check is written for the policy amount. It does not come close to covering the surgery, let alone the months of missed work. The adjuster is polite about it. There is nothing more here, they say.
Frequently there is quite a lot more. It is just sitting in your own policy, under a coverage most drivers do not think about until the day it becomes the most important line on their declarations page. Uninsured and underinsured motorist coverage is the mechanism Colorado law provides for exactly this situation, and the way it works here is more favorable to injured people than in many other states.
What This Coverage Actually Does
Uninsured motorist coverage responds when the at-fault driver has no liability insurance at all. Underinsured motorist coverage responds when the at-fault driver has some insurance, but not enough to cover the harm they caused. Colorado handles both under the same statutory framework, and insurers typically sell them together as a single UM/UIM limit.
The coverage is first-party, meaning you are claiming against your own carrier rather than the other driver’s. That sounds simple and it is not, because the moment you file a UM/UIM claim, the company that has been collecting your premiums becomes the entity deciding how much your injuries are worth. The relationship changes, and people are routinely surprised by how adversarial it becomes.
Colorado Uses Add-On Coverage, Not Setoff
This is the detail that changes case values, and it is worth understanding precisely.
In some states, underinsured motorist coverage is reduced by whatever the liability carrier paid. If you carried $100,000 in UIM and the at-fault driver’s carrier paid $25,000, you would be left with $75,000 of available coverage. Colorado does not work that way. Under C.R.S. 10-4-609, this coverage is in addition to any liability coverage, and the statute expressly states that the available amount is not reduced by a setoff from any other coverage, including liability insurance, medical payments coverage, health insurance, or other UM/UIM coverage.
So in the example above, the $25,000 liability payment and the $100,000 in UIM coverage stack on top of one another. The setoff structure was eliminated by legislation effective January 1, 2008, and the change materially increased what Colorado drivers can actually recover. Anyone still operating on the older assumption is undervaluing their own claim.
Stacking Across Policies Versus Within One Policy
The word stacking gets used loosely, and the distinction matters.
Within a single policy that covers several vehicles for a single premium, the statute permits insurers to limit the coverage so it applies once per accident. Most Colorado auto policies are written that way, so a household with three cars on one policy generally cannot multiply the UM/UIM limit by three.
Separate policies are a different question. If you are covered as a resident relative under a parent’s policy, or you have a second policy on a motorcycle or a work vehicle, or you were a passenger in a vehicle carrying its own UM/UIM coverage, there may be more than one policy in play. Identifying every policy that could respond is basic investigative work in an underinsured case, and it is work that no adjuster is going to do on your behalf. Our page on stacking uninsured motorist coverage in Colorado goes through how those layers get identified.
Hit and Run Drivers and Drivers Who Cannot Be Found
A driver who flees is treated as uninsured for purposes of your own coverage, which is why UM protection is often the entire case after a hit and run. The statute also addresses a subtler situation. A tortfeasor is deemed uninsured, solely so the insured can be paid under UM coverage, where the person cannot be located for service of process after a reasonable attempt to serve them. That provision matters more often than people expect, because a driver who gave a bad address at the scene or who has left the state can effectively become unreachable even when they technically carried insurance.
Documenting a hit and run properly in the first hours is what makes the UM claim viable later. Report it to law enforcement. Get the report number. Note anything you recall about the vehicle. Tell your own carrier promptly, because policies contain notice provisions and carriers do enforce them. Our hit and run coverage page covers the reporting requirements in more detail.
You Have to Ask Permission Before Settling
Here is a mistake that permanently destroys otherwise strong claims. Almost every UM/UIM policy contains a consent to settle provision. Before you accept the liability carrier’s policy limits and sign a release, you generally must notify your own UIM carrier and obtain their consent.
The reason is that your carrier holds subrogation rights against the at-fault driver. If you release that driver without permission, you have extinguished a right your own insurer possessed, and the insurer will argue that your UIM claim is prejudiced or forfeited entirely. People do this constantly. They receive a policy limits offer, it feels like a windfall relative to nothing, they sign, and only afterward discover the far larger claim they just gave away. If there is one procedural point in this entire article worth remembering, it is this one.
The Deadline Is Not the Same as Your Injury Deadline
UM/UIM claims carry their own limitations framework under C.R.S. 13-80-107.5. The general rule is that an action or arbitration demand must be brought within three years after the cause of action accrues. The statute then provides alternative timing where the underlying bodily injury claim against the at-fault driver has been preserved, allowing the UM or UIM claim to proceed within two years after the insured receives payment of the liability settlement or judgment.
The practical takeaway is that the UM/UIM clock and the ordinary motor vehicle clock are related but not identical, and which provision governs depends on what happened with the underlying claim and when. Treating your own carrier’s deadline as automatically the same as the tortfeasor’s deadline is a mistake that has cost people entire claims.
Medical Payments Coverage Sits Alongside It
Most Colorado auto policies also carry medical payments coverage, usually in a modest amount, and it operates independently of fault. MedPay pays treatment costs regardless of who caused the crash, it pays quickly, and under the same no setoff language it does not reduce what your UM/UIM coverage owes you.
That matters more than the dollar figure suggests. In the months between a crash and a resolution, unpaid medical bills go to collections, providers stop scheduling, and people abandon treatment they need. Gaps in treatment then become the centerpiece of the insurer’s argument that the injuries were minor or unrelated. MedPay is often the coverage that keeps care continuous long enough for the larger claim to be worth anything. Ask whether you have it before you assume you do not.
Arbitration Instead of a Jury
Many Colorado UM/UIM policies require disputes to be resolved through arbitration rather than in front of a jury. That has real consequences. The rules of evidence may be relaxed, discovery is often narrower, the arbitrator is frequently a retired judge or an experienced lawyer rather than twelve neighbors, and the outcome is usually final with very limited grounds for appeal.
Arbitration is not inherently bad for an injured person. It is faster and less expensive than trial, and a well prepared arbitration presentation can produce an excellent result. But it is a different forum requiring different preparation, and whether your policy compels it is something to determine early rather than after you have built the case for a jury that will never hear it.
Your Own Carrier Can Act in Bad Faith
The last thing worth saying about first-party coverage is that the duty of good faith runs directly from your insurer to you. When a carrier unreasonably delays or denies benefits owed under your own policy, Colorado provides statutory remedies that do not exist against a third-party liability insurer. A UM/UIM claim that is being slow-walked, lowballed against clear evidence, or denied without a reasonable basis is not merely frustrating. It may be a separate cause of action.
What to Do Now
Pull your declarations page and find your UM/UIM limit. If you have not looked at that number recently, look now, because it is the practical ceiling on your recovery in a crash with an underinsured driver, and raising it is usually inexpensive relative to what it protects. If you are already in a claim, identify every policy that might respond before you sign anything, and do not release the at-fault driver without your carrier’s written consent.
Talk to a Colorado Injury Lawyer
Rampart Injury Lawyers represents injured people in Castle Rock, Douglas County, and along the I-25 corridor from Greenwood Village to Colorado Springs. Todd Travis and Jordan Travis have handled underinsured motorist and insurance bad faith claims across Colorado for decades, including the arbitrations and coverage fights that follow when a carrier decides its own policyholder is worth less than the policy says. If the driver who hit you did not carry enough coverage, contact our office for a free consultation with an attorney.
