Uninsured motorist accidents are frustratingly common in Arizona. When the driver who hit you has no insurance — or not enough to cover your losses — the path to compensation runs through your own policy, and often through the legal process. Here's how that generally works in Phoenix and what shapes outcomes in these cases.
Uninsured motorist (UM) coverage is a provision in your own auto insurance policy. When the at-fault driver has no liability insurance, your UM coverage steps in to pay for damages you'd otherwise be unable to collect. A related type, underinsured motorist (UIM) coverage, applies when the at-fault driver has insurance but not enough to cover your full losses.
In Arizona, insurers are required to offer UM/UIM coverage, though policyholders can reject it in writing. If you carry it, the coverage limit typically mirrors your liability limits unless you've selected something different. What your policy actually covers — and for how much — depends entirely on the terms you agreed to when the policy was issued.
UM claims are first-party claims, meaning you're filing against your own insurer rather than the at-fault driver's. That doesn't mean the process is simple or that your insurer automatically pays. Insurance companies investigate UM claims just as they would a liability claim, and disputes over fault, injury severity, and coverage limits are common.
Arizona follows a pure comparative fault system. That means if you were partially at fault for the crash, your recoverable damages are reduced by your percentage of fault — but you're not barred from recovering entirely, even if you were mostly at fault.
In a UM claim, your insurer will still investigate fault. They may argue that you contributed to the accident in order to reduce what they owe. Evidence like the police report, witness statements, traffic camera footage, and physical damage patterns all factor into that determination.
If the at-fault driver is unidentified — a hit-and-run, for example — the claim process involves additional requirements. Many policies require physical contact between vehicles to trigger UM coverage in a hit-and-run, though policy language varies.
In a UM/UIM claim, the categories of damages generally mirror what you'd seek in a standard liability claim:
| Damage Type | What It Covers |
|---|---|
| Medical expenses | ER visits, surgery, rehabilitation, ongoing care |
| Lost wages | Income lost during recovery; future earning capacity in serious cases |
| Property damage | Vehicle repair or replacement (often handled under collision coverage separately) |
| Pain and suffering | Non-economic losses for physical pain and emotional impact |
| Wrongful death | Losses to surviving family members in fatal accidents |
How these are calculated — and what documentation supports them — varies by case. Insurers use adjuster evaluations, medical records, and sometimes independent medical exams to assess injury claims. Gaps in medical treatment or delays in seeking care can affect how a claim is valued.
People often pursue uninsured motorist claims without legal representation when injuries are minor and the insurer pays without dispute. When injuries are serious, coverage is disputed, or the insurer's offer seems far below actual losses, many claimants consult a personal injury attorney.
Most car accident attorneys in Phoenix handle UM/UIM cases on a contingency fee basis — meaning they collect a percentage of the recovery, typically ranging from 25% to 40% depending on case complexity and whether it goes to trial, rather than charging upfront fees. The exact percentage varies by firm and agreement.
An attorney in a UM case typically handles claim documentation, communicates with your insurer, negotiates the settlement, and if needed, pursues arbitration or litigation. Arizona UM/UIM claims that can't be resolved through negotiation often go to arbitration rather than court, depending on the policy language. Some policies require it; others allow either path.
What makes attorney involvement particularly common in UM cases is that your own insurer — despite being your policy provider — is still a business with an interest in limiting payouts. That dynamic is different from what many people expect.
Arizona's statute of limitations for personal injury claims is generally two years from the date of injury, but UM/UIM claims may have different contractual deadlines built into your policy. These can be shorter. Missing a policy-specific deadline can affect your ability to recover even if the legal deadline hasn't passed.
Arizona also has relatively high rates of uninsured drivers — estimates have historically placed the state among the higher-percentage states nationally. Phoenix's dense traffic and highway system contribute to both the frequency and severity of crashes.
SR-22 filings may come into play if the uninsured driver is cited and their license is affected — but that process involves them, not you, unless you also received a citation.
No two UM claims resolve the same way. The variables that most significantly affect results:
Understanding how UM coverage works is one thing. Knowing how those mechanics apply to your specific policy, your injuries, and the facts of your crash is a different matter entirely — and that's where the general framework stops being enough.
