Arizona gives insurers exactly 30 days to complete an investigation once a claim is reported, under A.A.C. R20-6-801. Most claimants never see that clock. Understanding how insurance companies investigate a claim turns a confusing process into something you can track and question when it stalls.
How an insurance claim investigation starts
An insurer’s file usually opens the moment a crash gets reported, not when you submit paperwork. The adjuster pulls the police report first. Within a few days, they typically check both drivers’ policy status and photograph vehicle damage.
This early work sets the initial reserve. That’s the insurer’s internal estimate of what the claim is worth. The insurer sets that number long before your medical treatment finishes, then revises it as the file grows — but the starting figure anchors the adjuster’s thinking.
What the adjuster actually collects
Beyond the police report, a standard Arizona injury investigation touches four areas.
Statements
The adjuster wants a recorded statement from you and any witnesses. Arizona law doesn’t require you to give one to the other driver’s insurer, only to your own.
Medical records
Insurers request treatment records to compare your reported injuries against your documented history. They flag gaps in treatment or delayed care here first.
Physical evidence
Vehicle damage, road conditions, traffic camera footage where it exists, and sometimes a direct inspection of the vehicles.
Public records and social media
Court records, prior claims history through shared industry databases, and whatever is publicly visible online.
The deadlines insurers actually have to follow
Arizona’s Unfair Claims Settlement Practices Act sets real deadlines for how insurance companies investigate a claim. An insurer must acknowledge a new claim within 10 working days. It must complete its investigation within 30 days, unless it documents a legitimate reason for delay. Once you submit a proper proof of loss, the insurer must accept or deny the claim within 15 working days.
A denial has to name the specific policy provision behind it. A vague denial letter is its own compliance problem, separate from whatever the insurer decided about your claim.
Not X — Y: these deadlines don’t guarantee a fair outcome. They guarantee a documented one. That documentation is the real value here. A stalled file stops looking like bad luck. It becomes something specific you can point to and question.
Where investigations commonly go sideways
Two patterns show up often enough to name directly. First, an insurer treats “still investigating” as an open-ended status, not a 30-day window that requires documentation. Second, adjusters often read a gap between injury and treatment as proof the injury wasn’t serious. Usually the real explanation is simpler: scheduling, cost, or not realizing how hurt you were right away.
The bottom line
An insurance investigation isn’t neutral fact-finding. It’s the insurer building the file it will use to value your claim, on a clock with real deadlines nobody mentions to you upfront. Knowing what gets collected, and by when, won’t change the outcome on its own. But it does turn a vague delay into something you can name, document, and push back on.
Frequently asked questions
Under A.A.C. R20-6-801(F), insurers must complete their investigation within 30 days of being notified of a claim, unless they document a legitimate reason for the delay.
Adjusters typically review the police report, take recorded statements, request medical records, inspect physical evidence, and check public records including social media.
No. Arizona law only requires a recorded statement to your own insurer, not the at-fault driver's insurance company.
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This article is for general informational purposes only and doesn’t constitute legal advice. Claims-handling deadlines reflect Arizona regulation as of publication and can change; every insurer’s file works a little differently.