Underinsured Motorist Claims in California in West Covina, CA Exhaustion, Offsets and Deadlines

The offset rule that surprises people

Insurance Code section 11580.2 subdivision (p) governs underinsured motorist claims. An underinsured motor vehicle is one whose liability limits are less than the insured's own uninsured motorist limits. The statute conditions the claim on exhaustion: the insured must first exhaust the bodily injury liability limits of the underinsured driver's policy, by settlement or judgment. The insured's own coverage is then reduced by the amounts paid or payable under that liability policy. A claimant carrying one hundred thousand dollars in coverage who collects thirty thousand from the at-fault driver has seventy thousand of remaining capacity, not one hundred thirty thousand. The statute also entitles the insurer to a credit and requires the insured to serve it with a copy of any complaint filed against the underinsured driver.

No stacking, and a limit on what must be offered

Subdivision (q) prohibits stacking: the limit of uninsured motorist coverage available is the highest single limit under any one policy, not the sum of limits across vehicles or policies. Subdivision (m) obligates insurers to offer these limits only up to thirty thousand dollars per person and sixty thousand per accident, so a higher figure exists only if it was purchased. Reading the declarations page for both the per-person figure and the presence of a written waiver is therefore the first practical step in any file where damages exceed the at-fault driver's limits.

Why this coverage gets used so often here

Statutory minimum liability limits are low relative to hospital costs. Vehicle Code section 16056 sets minimums of thirty thousand, sixty thousand and fifteen thousand for policies issued or renewed on or after January 1, 2025, with the older 15/30/5 figures still relevant to earlier policies. The City's roadway safety plan assigned an economic cost factor of $2.19 million to each fatal or severe-injury collision and $142,300 to a collision producing other visible injury, and counted 29 fatal and 75 severe-injury collisions in the city over five years. Those cost factors sit far above minimum limits, which is the entire reason a first-party layer exists.

The consent trap

Subdivision (c) permits an insurer to exclude coverage where the insured or a representative settled with a person or organization legally liable without the insurer's written consent. In practical terms, accepting the at-fault driver's policy limits and signing a general release before notifying the underinsured motorist carrier can extinguish the second claim. The sequence that preserves both is notice to the insurer, a request for written consent to settle for available liability limits, and only then a release. This is a documentation problem rather than a legal subtlety, and it is where otherwise sound claims fail.

How the dispute gets resolved

Because the underinsured claim runs against the claimant's own insurer, the vehicle is contractual and often arbitral. Subdivision (f) provides for determination by a single neutral arbitrator when the parties do not agree on liability or amount, absent a written agreement to a different number of arbitrators. Subdivision (o) sets out discovery duties on both sides with short response windows, including production of medical records and submission to examinations within stated day counts. Subdivision (i) fixes the two-year outer deadline: file suit against the uninsured motorist, conclude a settlement, or formally demand arbitration by certified mail within two years of the accident, and conclude the arbitration within five.

Valuing damages against your own carrier

The measure of damages does not change because the payer is the claimant's own insurer. Civil Code section 3333 states the general tort measure as compensation for all detriment proximately caused. Past medical damages remain limited by what was paid or incurred rather than billed, following the California Supreme Court's 2011 holding that the collateral source rule does not extend recovery to amounts a provider never expected to collect. What does change is tone: the same insurer holding the claimant's premium record is now evaluating the claimant's injury, and every recorded statement enters that evaluation.

If damages look larger than the other policy

The documents that matter first are both declarations pages, the at-fault driver's policy limits in writing, the written consent correspondence, and the full medical and wage record. The two-year clock in section 11580.2 subdivision (i) is the operative one and runs from the accident date, independently of the two-year injury deadline in Code of Civil Procedure section 335.1. This page describes California statutory requirements in general and is not legal advice about any policy or claim. Coverage-specific questions can be directed to the attorney who advertises on this site.