Indiana Code Title 27. Insurance § 27-1-2.3-8.1

(1) at a rate set or approved, by contract or ordinance, by the county or municipality in which the ambulance service originated;

(2) at the rate of four hundred percent (400%) of the current published rate for ambulance service as established by the Centers for Medicare and Medicaid Services under Title XVIII of the federal Social Security Act (42 U.S.C. 1395 et seq.) for the same ambulance service provided in the same geographic area;  or

(3) according to the nonparticipating ambulance service provider's billed charges;