Ohio Rev. Code Ann. § 4121.441
(A) The administrator of workers' compensation, with the advice and consent of the bureau of workers' compensation board of directors, shall adopt rules under Chapter 119. of the Revised Code for the health care partnership program administered by the bureau of workers' compensation to provide medical, surgical, nursing, drug, hospital, and rehabilitation services and supplies to an employee for an injury or occupational disease that is compensable under this chapter or Chapter 4123., 4127., or 4131. of the Revised Code, and to regulate contracts with managed care organizations pursuant to this chapter.
(1) The rules shall include, but are not limited to, the following: