You did everything right. You bought insurance. You drove carefully. And then someone else’s negligence put you in the hospital — only for you to find out their policy limits won’t cover half of what this is going to cost you. Now your own insurance company is supposed to help. But they’re lowballing you, delaying your claim, or questioning injuries your own doctor has documented.
This is the reality of a UIM claim in Colorado — and it’s one of the most important, and most misunderstood, areas of personal injury law in our state.
What Is UIM Coverage and Why Does It Exist?
Underinsured Motorist coverage — abbreviated UIM — is a provision in your own auto insurance policy that pays the gap between what the at-fault driver’s liability insurance covers and your actual damages. It exists because Colorado’s minimum liability requirement is only $25,000 per person. That number hasn’t kept pace with the cost of a single emergency room visit, let alone surgery, rehabilitation, and lost income.
Under Colorado law, every auto insurer is required to offer UIM coverage in the same amounts as your liability limits. If you never specifically rejected that coverage in writing, you almost certainly have it. Many Colorado drivers don’t know this — and insurance companies aren’t eager to remind you.
Here Is How a UIM Claim Actually Works
When you are injured by an underinsured driver, the claim process has two distinct phases that must be handled carefully and in sequence.
Phase 1 — The at-fault driver’s liability policy. You first pursue a claim against the driver who hit you. Their carrier will investigate, dispute your damages where they can, and eventually offer a settlement up to their policy limits. If those limits are genuinely insufficient to cover your losses, you have the foundation for a UIM claim.
Phase 2 — Your own UIM coverage. Here is the step that surprises most people: before you accept the at-fault driver’s settlement, Colorado law and most policy language requires you to obtain your own insurance company’s consent. Accept that settlement without permission, and you may forfeit your right to pursue UIM benefits entirely. This is one of the most common and costly mistakes injured Coloradans make without an attorney.
Once you’ve properly preserved your rights and the at-fault driver’s limits are exhausted, your UIM carrier steps into the picture — and this is where the fight usually begins in earnest.
Your Own Insurance Company Is Still Your Opponent
This is the part nobody wants to believe. Your insurance company, the one you’ve been paying premiums to for years, is now on the other side of the table. They are not your advocate in a UIM claim. They are a business whose interest is in minimizing what they pay out.
Common tactics Colorado UIM carriers use to undervalue or deny claims include:
- Disputing the severity of your injuries or claiming they preexisted the accident
- Commissioning an Independent Medical Examination (IME) with a physician they hire and pay — whose findings routinely favor the carrier
- Requesting duplicative documentation and then claiming your submission was incomplete
- Delaying a response past 60 days with no legitimate justification
- Making an initial offer that bears no reasonable relationship to your documented damages
- Arguing that your treatment was excessive or unnecessary
None of this is coincidental. It is a systematic approach to claim valuation that is specifically designed to capitalize on an unrepresented claimant’s lack of information. Most people don’t know what their claim is actually worth. Insurers do.
What Colorado Law Says Your Carrier Must Do
Colorado has enacted some of the strongest first-party insurance protections in the country. Under C.R.S. § 10-3-1115, an insurance company may not unreasonably delay or deny payment of a claim for benefits owed to or on behalf of any first-party claimant. The statute applies directly to UIM claims against your own carrier.
When a carrier violates that standard, C.R.S. § 10-3-1116 provides a powerful remedy: the claimant is entitled to recover twice the covered benefit that was unreasonably denied or delayed, plus attorney’s fees and court costs. In practical terms, if your carrier unreasonably refused to pay $100,000 in UIM benefits you were owed, the statute creates exposure of $200,000 plus fees.
This is not a technicality. It is a deliberate legislative decision to give Colorado policyholders real teeth when their own insurer acts in bad faith. But it requires an attorney who knows how to build that record and recognize when the threshold has been crossed.
What Makes a UIM Claim Stronger
Not every UIM claim is the same. The factors that tend to drive value — and that a skilled attorney will build the file around from the beginning — include:
Objective medical findings. MRI findings, surgical records, fracture documentation, and specialist opinions carry significantly more weight than self-reported pain scores alone. Your treatment record needs to tell the story of your injury in clinical terms that an adjuster and, if necessary, a jury can evaluate.
Documented economic losses. Lost wages, reduced earning capacity, and out-of-pocket expenses need to be quantified with records — not estimates. Pay stubs, tax returns, and employer documentation of missed work all matter.
Causation documentation. Every treatment record should clearly connect your injuries to the accident. Gaps in treatment, delayed care, or records that are vague on causation give carriers ammunition to dispute the claim.
Pre-litigation demand positioning. The demand letter your attorney submits to your UIM carrier is the foundation of the entire claim. It needs to establish value with specificity, address anticipated defenses, and — where appropriate — signal bad faith exposure under C.R.S. §§ 10-3-1115 and 10-3-1116. Carriers respond differently to attorneys who demonstrate they understand that exposure.
Timing Matters More Than Most People Realize
Colorado’s general personal injury statute of limitations is three years from the date of the accident under C.R.S. § 13-80-101. But UIM claims can have additional deadlines buried in your policy language — notice requirements, proof of loss deadlines, and consent-to-settle provisions that, if missed, can extinguish your right to benefits even if your claim is otherwise valid.
The time to get an attorney involved in a UIM case is before you accept anything from the at-fault driver’s carrier — not after. Once that settlement is accepted without proper consent, the window may already be closed.
You Should Not Navigate a UIM Claim Without an Attorney
I’ve represented Colorado injury victims for over 16 years. UIM claims against Colorado carriers are among the most complex matters I handle, and they are also among the most consequential — because the stakes are often higher than a standard third-party claim. When the at-fault driver is underinsured, your UIM policy may be the primary source of meaningful recovery.
The carriers know the rules. They have experienced adjusters and defense counsel working these claims every day. An unrepresented claimant is at a structural disadvantage from the moment they pick up the phone.
At Mandelaris Law, I handle UIM and insurance bad faith claims throughout Colorado, including Denver, Aurora, and the surrounding metro area. I intentionally limit my caseload so I can give every client direct attorney access — including my cell phone number. When you call, you get me.
If you’ve been injured by an underinsured driver, or if your own carrier is already pushing back on a valid claim, call me before you say anything else to your adjuster.
The consultation is free. The call is confidential. And it may be the most important call you make after your accident.
Mandelaris Law, LLC
(303) 357-9757
501 S. Cherry St., Suite 1100, Denver, CO 80246
mandelarislaw.com
The information in this article is provided for general informational purposes and does not constitute legal advice.