Iowa Code § 139A.15: Filing of bills.

All bills incurred under this chapter in establishing, maintaining, and terminating isolation and quarantine, in providing a necessary house or hospital for isolation or quarantine, and in making terminal cleanings, shall be filed with the local board. The local board at its next regular meeting or special meeting called for this purpose shall examine and audit the bills and, if found correct, approve and certify the bills to the county board of supervisors for payment.