Ohio Revised Code Title XXVII. Courts Revised Code General Provisions Special Remedies § 2743.521

(A) For claims for medical, psychological, dental, chiropractic, hospital, physical therapy, and nursing services, the attorney general may audit fee bill payments and adjust fee bill reimbursements in accordance with appropriate cost containment and reimbursement guidelines adopted by the administrator of workers compensation.

(B) A medical provider that accepts payment for medical care-related allowable expenses as part of an award of reparations shall not seek reimbursement for any part of those allowable expenses from the victim or the claimant who was granted the award. This division does not prohibit the medical provider from seeking reimbursement from a collateral source.