Ohio Rev. Code § 3923.27
No policy of sickness and accident insurance delivered, issued for delivery, or renewed in this state after August 26, 1976, including both individual and group policies, that provides hospitalization coverage for mental illness shall exclude such coverage for the reason that the insured is hospitalized in an institution or facility receiving tax support from the state, any municipal corporation, county, or joint county board, whether such institution or facility is deemed charitable or otherwise, provided the institution or facility or portion thereof is fully accredited by the joint commission on accreditation of hospitals or certified under Titles XVIII and XIX of the "Social Security Act of 1935," 79 Stat. 291, 42 U.S.C.A. 1395, as amended. The insurance coverage shall provide payment amounting to the lesser of either the full amount of the statutory charge for the cost of the services pursuant to section 5121.33 of the Revised Code or the benefits payable for the services under the applicable insurance policy. Insurance benefits for the coverage shall be paid so long as patients and their liable relatives retain their statutory liability pursuant to section 5121.33 of the Revised Code. Only that portion or per cent of the benefits shall be payable that has been assigned, or ordered to be paid, to the state or other appropriate provider for services rendered by the institution or facility.
R.C. §3923.27