AZ HB2361

Requires insurance carriers, self-insured employers, or claims processing representatives to determine whether to deny or pay medical bills within 30 days of claim acceptance or bill receipt, whichever is later.

Mandates payment of approved billing portions within 30 days after the payment determination, with interest at the legal rate calculated from the payment due date if payment is late.

Establishes a 24-month limitations period for health care providers to submit billings and commence court action for payment, running from the date medical service was rendered or when the provider knew or should have known service was provided on an industrial claim.

Specifies that subsequent or corrective billings do not restart the 24-month limitations period, and injured workers are not responsible for any disputed amounts between providers and carriers.

Permits insurance carriers and providers to establish express written contracts that specify payment periods and remedies, which supersede these requirements, though late payment interest penalties still apply if the contract lacks remedy provisions.