Understanding the Clock on Underinsured Motorist Claims in Centennial

Key Takeaways: In Colorado, the deadline to file an underinsured motorist claim in Centennial is generally three years from the date the cause of action accrues, under C.R.S. § 13-80-107.5. A conditional alternative may allow a UIM claim brought within two years after the insured receives payment of a settlement or judgment on a properly preserved underlying liability claim, but the statute generally provides a floor of not less than three years from accrual. Accrual is not automatically the crash date; it generally begins when the injury and its cause are known or should have been known through reasonable diligence, and courts have often applied delayed-discovery arguments narrowly. Generally, only a lawsuit or a properly worded arbitration demand delivered to the insurer stops the statutory clock, so calls, emails, and ordinary settlement letters may not preserve the claim. Even a timely claim may be reduced or barred by modified comparative negligence under C.R.S. § 13-21-111, and subrogation rules and policy consent-to-settle provisions can further affect your net recovery. Because policy language and facts vary, confirming whether your claim is a UM or UIM claim early may help avoid a miscalculated deadline.

If an at-fault driver’s liability limits were too low to cover your injuries, Colorado generally gives you three years from accrual to file a lawsuit or deliver an arbitration demand against your own UIM carrier. This comes from C.R.S. § 13-80-107.5, separate from the general personal injury deadline. A narrow alternative may extend that window in limited circumstances, but it does not shorten the three-year period.

If you are worried about the Colorado underinsured motorist claim deadline in your case, the team at Jacobs Law is ready to review your policy and your timeline. Call 303-529-4040 or contact us now to discuss your options before any filing period runs.

What Makes a Claim a UIM Claim Rather Than a UM Claim

The distinction generally turns on whether the at-fault driver carried liability insurance, and if so, whether those limits were adequate. Under C.R.S. § 10-4-609, uninsured motorist coverage includes coverage for bodily injury or death an insured is legally entitled to recover from an underinsured motorist, one insured but with limits insufficient to fully compensate the insured’s damages. A UIM claim generally arises when the other driver had coverage, but not enough of it.

This classification matters because it can determine which portion of the limitations statute governs your case. The UIM portion of C.R.S. § 13-80-107.5 contains an alternative timing provision tied to payment of a settlement or judgment on the underlying liability claim; while the UM portion also has an alternative timing provision, it is triggered by the insured’s knowledge that the tortfeasor lacked any liability insurance — not by receipt of payment — making the UIM payment-based trigger distinct from, though not entirely without parallel in, the UM provision. Misidentifying your claim type may lead to a miscalculated deadline, which is why many injured people in Arapahoe County ask an attorney to confirm the category early.

How UIM Coverage Fills the Gap

Colorado law generally requires insurers to offer UM/UIM coverage that pays the difference between the at-fault driver’s liability limits and your actual damages, although a named insured may reject the coverage in writing. Under C.R.S. § 10-4-609(1)(c), the coverage is in addition to any legal liability coverage and covers the difference, if any, between the liability limits and damages sustained, excluding exemplary damages, up to the coverage purchased. Colorado’s legislative materials on optional automobile insurance coverage describe UM/UIM as one of several coverages drivers may add to a standard policy.

Because insurers are generally required to offer it unless rejected in writing, many Centennial drivers may carry UIM coverage without realizing it. Reviewing the declarations page of every household policy is often a useful first step after a serious collision. Stacking and household resident provisions vary by policy language and are fact-dependent.

The Colorado Underinsured Motorist Claim Deadline in Detail

The default rule under C.R.S. § 13-80-107.5(1)(b) is generally three years after the cause of action accrues. An alternative path exists: if the underlying bodily injury liability claim against the underinsured motorist is preserved, either by commencing an action or by payment of a settlement or judgment within the time limits in C.R.S. §§ 13-80-101(1)(n) and 13-80-102(1)(d), the UIM claim may be timely if brought within two years after the insured receives that payment.

Notably, the statute sets a floor. The insured generally is not to have less than three years after accrual to commence an action or demand arbitration, so the alternative provision can only extend, not shorten, the period. The two-year extension is conditional, not automatic, and depends on facts an insurer may later dispute.

💡 Pro Tip: Calendar the three-year date first and treat any potential extension as a backup rather than a plan. If a dispute later arises over whether the underlying claim was properly preserved, the earlier date may offer more protection.

When the Clock Actually Starts Running

Accrual is not automatically the crash date. Under C.R.S. § 13-80-107.5(3), a UM or UIM cause of action generally accrues when both the existence and cause of the injury are known or should have been known through reasonable diligence. For many straightforward collisions, those facts may be apparent immediately, so accrual and the crash date may line up.

Delayed-discovery arguments exist, but courts have often construed them narrowly. Injuries that surface weeks later, such as certain spinal or brain injuries, may raise a discovery question, though insurers may argue reasonable diligence would have revealed the injury sooner. When accrual is disputed, it is often a fact question, so relying on a discovery argument to justify a late filing carries real litigation risk.

Filing Suit Versus Demanding Arbitration

The statute treats two distinct acts as generally sufficient to stop the clock. C.R.S. § 13-80-107.5(2) defines an "action" as a lawsuit commenced in a court of competent jurisdiction, and an "arbitration demand" as a written demand delivered to the insurer that reasonably identifies the claimant, the underinsured motorist if known, and the fact that UM/UIM arbitration is being demanded.

A phone call to your adjuster is generally not a filing. Common missteps that may not preserve a claim include:

• Reporting the crash to your own insurer and assuming the claim is "open"
• Exchanging emails with an adjuster about medical bills
• Waiting for the liability carrier to finish its investigation
• Sending a settlement demand letter without the statutory arbitration language

Our discussion of why you have 3 years to file your Centennial UM/UIM claim walks through these distinctions in more depth.

How Fault Allocation Can Shrink a Timely Claim

Meeting the Centennial UIM filing time limit may preserve your claim, but comparative fault can still affect its value. Colorado applies a modified comparative negligence standard under C.R.S. § 13-21-111, which generally bars recovery when the claimant’s negligence is as great as the other party’s, and otherwise reduces damages proportionally. Cornell’s overview of comparative negligence doctrine explains that this approach allocates damages based on relative fault, with modified systems cutting off recovery past the applicable threshold.

UIM adjusters frequently raise fault arguments because they can reduce the payout. Preserving photographs, the Arapahoe County crash report, witness contact information, and consistent medical records early may give you material to rebut those arguments later. Fault allocation is fact-intensive, and outcomes vary considerably.

Subrogation, Reimbursement, and Your Net Recovery

Colorado law includes protections intended to keep UIM claimants from being stripped of their recovery by other payers. Under C.R.S. § 10-1-135(3)(a), reimbursement or subrogation is generally permitted only if the injured party has first been fully compensated for all damages, and a provision requiring reimbursement where the injured party has not been made whole may be void as against public policy. Some employer-sponsored health plans governed by ERISA may be treated differently under federal preemption.

Timing also interacts with subrogation rights in a way many claimants may not anticipate. Under C.R.S. § 10-1-135, if an injured party has not pursued a claim against the at-fault third party by 60 days before the statute of limitations expires, a payer of benefits may bring its own direct subrogation action, subject to notice requirements. Letting deadlines drift may shift control of part of your case to a health plan or med-pay carrier.

Practical Steps After a Crash With an Underinsured Driver

Sequencing matters when you are pursuing both a liability claim and a UIM claim. Many policies require notice to the UIM carrier and, in some cases, consent before settling with the at-fault driver; failing to obtain consent may jeopardize coverage regardless of timely filing, although an insurer may need to show prejudice in some circumstances. Reading your policy’s cooperation and consent-to-settle provisions early is worthwhile.

Documentation often carries the claim. Keep treatment consistent, save wage-loss records, and avoid recorded statements about fault or injury severity before you understand the full medical picture. A Colorado underinsured motorist claim deadline lawyer can help coordinate these moving parts while the limitations period runs in the background.

💡 Pro Tip: Request a certified copy of your full policy, not just the declarations page. Endorsements sometimes contain notice conditions and arbitration provisions not summarized elsewhere.

Frequently Asked Questions

1. Is the UIM deadline the same as the general personal injury deadline in Colorado?

Generally no, because different statutes govern each. C.R.S. § 13-80-107.5 applies specifically to UM/UIM actions and arbitrations, while auto negligence claims against the at-fault driver generally fall under C.R.S. § 13-80-101(1)(n). Both periods are commonly three years but run from different triggering events and are calculated independently.

2. Does settling with the at-fault driver end my UIM claim?

Not necessarily, though it may if policy conditions are ignored. Many policies require the UIM carrier’s consent before you release the at-fault driver. Settling within the liability deadline may also trigger the alternative two-year window in the UIM limitations statute, measured from the date you receive payment.

3. What if I did not know how badly I was hurt until months later?

The accrual rule may help, but it is generally applied narrowly. A UIM cause of action generally accrues when both the injury and its cause are known or should have been known with reasonable diligence. Courts may examine what a reasonably diligent person would have discovered, so this is not a reliable substitute for timely filing.

4. Do I have to file in Arapahoe County?

Venue generally depends on the parties and the policy, not on where the crash occurred alone. A UIM claim against your own insurer is generally contractual, and some policies direct disputes to arbitration instead of court. Whether it proceeds in court or arbitration generally depends on the specific policy language and applicable venue rules.

5. Can the deadline ever be shorter than three years?

The statute generally sets three years from accrual as the minimum statutory period for UIM claims. That said, policy notice and cooperation provisions may impose earlier practical obligations, such as prompt reporting requirements. Missing a contractual notice condition may create coverage problems even when the statutory period has not expired.

Protecting Your Claim Before the Window Closes

The Colorado UIM time limit is generally three years from accrual under C.R.S. § 13-80-107.5, with a conditional two-year alternative tied to a preserved liability claim and a statutory floor keeping the period from dropping below three years. Accrual generally turns on discovery of the injury and its cause, filing generally means a lawsuit or a properly worded arbitration demand, and comparative fault under C.R.S. § 13-21-111 may reduce what a timely claim ultimately yields. Every case turns on its own facts, including policy language that varies from carrier to carrier.

If you were injured by an underinsured driver in Centennial or elsewhere in Colorado, Jacobs Law can review your coverage and calendar the applicable deadlines. Call 303-529-4040 or schedule a consultation to get started.

Disclaimer: This content is for informational purposes only and is not legal advice. Every case is unique, and results may vary. Consult an attorney about your specific circumstances.