California has one of the highest uninsured driver rates in the country, and the drivers who do carry insurance frequently carry minimum limits that a single hospital stay exceeds. Uninsured and underinsured motorist coverage exists for exactly that gap. What surprises people is the posture: the moment you file, the company you have paid for years starts evaluating your claim the way any opposing insurer would.
People approach their own carrier expecting cooperation and give a casual recorded statement, sign a broad medical authorization, and describe their injuries optimistically. All three are used later. A UM claim is a claim against an insurer, and it should be documented and presented exactly as a claim against a stranger's insurer would be — because functionally, that is what it is.
Check your declarations page for three things. UM/UIM bodily injury limits, which are frequently far lower than the liability limits on the same policy. MedPay, which pays treatment regardless of fault and without waiting on liability. And whether UM is present at all — California requires insurers to offer it, but you can waive it in writing, and many people did so years ago without registering what they were declining.
Four situations trigger the coverage.
The offset rule is the single most misunderstood feature of California UIM, so here it is concretely. Suppose the at-fault driver carried $30,000 and paid it in full. Suppose your own UIM limit is $100,000. Your UIM claim is worth up to $70,000 — your limit minus what was already paid. Total available across both policies is $100,000, not $130,000.
Two consequences follow. First, if your UIM limit is equal to or lower than the at-fault driver's liability limit, you have no UIM claim at all regardless of how severe your injuries are. Second, raising your own UM/UIM limits is one of the least expensive and most consequential insurance decisions available to a California driver. It is worth doing now rather than discovering the shortfall after a crash.
The same way any insurer does, with one added advantage: it already holds your history. Expect examination of prior claims and prior injuries, the timing between the crash and your first treatment, any gap in the treatment record, the property damage relative to the injuries claimed, and consistency between what you told the emergency department, what you told your primary care physician, and what you told the adjuster.
The recorded statement is where most damage occurs. It is requested early, framed as routine, and taken before you know the extent of your injuries. Describing yourself as mostly fine in week one becomes the benchmark against which month six is measured.
This one is worth emphasizing because it is silent and it is fatal. Most policies require the UM carrier's written consent before you accept a settlement from the at-fault driver's insurer, so that the carrier can preserve its right to pursue that driver. Accepting a fast liability settlement without obtaining consent can void the UIM claim entirely.
The sequence that goes wrong: the at-fault carrier offers policy limits early, the injured person accepts because the amount looks large, and only later discovers that the acceptance extinguished a UIM claim worth considerably more. Written consent first, then settlement.
Report it to police and get a report number — UM policies impose prompt reporting conditions. Notify your own insurer promptly, but do not give a recorded statement before you understand the claim. Request a certified copy of your full policy including declarations and endorsements rather than relying on the summary. Get medical attention the same day and maintain continuous treatment. Do not sign a broad medical authorization giving the carrier open access to your entire history. And do not settle with the at-fault driver's insurer without written consent from your own carrier.
No confusion. No pressure. Here is exactly what to expect when you contact us.
We read your actual policy, not the summary, and tell you at no cost what UM and UIM coverage is genuinely available.
We handle every contact with your carrier, obtain consent to settle where needed, and prepare the claim for arbitration.
We know how UM arbitrations value cases in Santa Clara County, and we treat your carrier as the opposing party it is.
Our fee comes from your recovery only — never out of pocket. If we do not win, you owe us nothing.
Settling without your carrier's written consent can void your UIM claim. Free consultation, no fee unless we win.
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