Section 26.1-41-09 - Payment of basic and optional excess no-fault benefits1. Basic and optional excess no-fault benefits are payable monthly for economic loss sustained by an injured person or dependent survivors or incurred on the injured person's behalf by the injured person's spouse, relatives, or guardian. A basic no-fault insurer may pay basic or optional excess no-fault benefits when due to the above persons who it believes have sustained or incurred the economic loss or at its option to the person rendering, for a charge, the services for which the benefits are payable. If the injured person dies, a basic no-fault insurer may pay the benefits due directly to those entitled to the benefits without the appointment of a personal representative and unless a court directs otherwise, may pay all benefits for survivors' income loss or replacement services loss to the surviving spouse for the use and benefit of all dependent survivors. A basic no-fault insurer's payments made in good faith in accordance with this chapter discharges its liability to the extent of the payments unless the basic no-fault insurer has been notified in writing of the claim of some other person prior to the making of any of the payments.2. Basic and optional excess no-fault benefits are overdue if not paid within thirty days after the basic no-fault insurer receives reasonable proof of the fact and the amount of loss sustained, except that the basic no-fault insurer may accumulate claims for periods not exceeding one month, and the benefits are not overdue if paid within twenty days after the period of accumulation. If reasonable proof is not supplied as to the entire claim, the amount supported by reasonable proof is overdue if not paid within thirty days after the proof is received by the basic no-fault insurer. Any part or all of the remainder of the claim that is later supported by reasonable proof is overdue if not paid within thirty days after proof is received by the basic no-fault insurer. Payment is deemed made on the date of mailing. All overdue payments must bear interest at the judgment rate allowed in section 28-20-34.3. Neither the injured person nor a basic no-fault insurer is required to pay for services billed more than one hundred eighty days after the date of treatment.