Ohio Rev. Code § 505.721
As used in this section, "authorized medicare reimbursement rate" means such rate established for the locality under Title XVIII of the "Social Security Act," 49 Stat. 620 (1935), 42 U.S.C.A. 301, as amended.
A board of trustees of a joint ambulance district may establish reasonable charges for the use of ambulance or emergency medical services. The board may establish different charges for district residents and nonresidents, and, in its discretion, may waive all or part of the charge for any district resident. The charge for nonresidents shall be an amount not less than the authorized medicare reimbursement rate, except that, if prior to the effective date of this section, the board had different charges for residents and nonresidents and the charge for nonresidents was less than the authorized medicare reimbursement rate, the board may charge nonresidents less than the authorized medicare reimbursement rate.
Charges collected under this section shall be kept in a separate fund designated as the ambulance and emergency medical services fund, and shall be appropriated and administered by the board. The moneys in the fund shall be used for the payment of the costs of the management, maintenance, and operation of ambulance and emergency medical services in the district. If ambulance and emergency medical services are discontinued in the district, any balance remaining in the fund shall be allocated in amounts proportionate to the percentage of the district's total population served and paid accordingly into the general funds of the participating political subdivisions.
R.C. § 505.721