Arizona is an at-fault state, which means the driver who caused your crash is ultimately responsible for your medical bills. But that liability insurer doesn't pay your providers as treatment happens — they pay at settlement or after a judgment. That gap can be weeks, months, or longer, and your bills don't wait.
What actually covers your bills while the claim is pending
Your own health insurance is the most common bridge. It covers accident-related treatment under your regular plan, though your insurer will likely place a lien on your eventual settlement to recover what they paid — this is called subrogation. Medical payments coverage (MedPay), if you bought it as part of your auto policy, pays your bills up to the policy limit regardless of fault and without a deductible fight. A letter of protection is another option — some healthcare providers, particularly those who work with personal injury attorneys, will defer payment until your case resolves, secured by a written agreement from your attorney. In some situations, injured people simply pay out of pocket and seek reimbursement as part of their damages claim.
When the at-fault driver is uninsured or underinsured
Arizona requires insurers to offer uninsured and underinsured motorist (UM/UIM) coverage, and drivers must reject it in writing if they don't want it (A.R.S. § 20-259.01). If you were hit by an uninsured driver, your UM coverage steps in. If the at-fault driver's limits are lower than your actual damages, UIM coverage fills the gap. Roughly one in ten Arizona drivers carries no insurance — UM/UIM coverage is how you protect yourself from that before the crash ever happens.
Medical liens and subrogation before you settle
Before you sign a settlement release, you need to account for all existing liens. If your health insurer paid for your treatment, your MedPay carrier covered bills, or a provider treated you on a letter of protection, those parties have a right to be repaid from your settlement. Failing to identify and resolve liens before settling can leave you legally obligated to pay more than you expected. Liens are often negotiable — providers and insurers will frequently accept a reduced amount to facilitate settlement — but only if you know they exist and address them before signing.
Comparative fault and your medical recovery
Arizona's pure comparative negligence rule (A.R.S. § 12-2505) means your medical expense recovery is reduced by your percentage of fault if you were partially responsible for the crash. Adjusters routinely argue that you share more blame than the evidence supports, which directly reduces what they owe you. See our post on Arizona comparative negligence law.
The filing deadline
Arizona gives most car accident victims two years to file from the accident date (A.R.S. § 12-542). If a government vehicle was involved, a Notice of Claim must be filed within 180 days. See our post on the Arizona personal injury statute of limitations for exceptions.
Our car accident attorneys handle claims throughout Phoenix and Scottsdale on a contingency fee basis. No fee unless we win. Call (480) 418-SHER (7437) or reach out online.