Ohio Rev. Code § 3937.44
Any liability policy of insurance including, but not limited to, automobile liability or motor vehicle liability insurance that provides a limit of coverage for payment for damages for bodily injury, including death, sustained by any one person in any one accident, may, notwithstanding Chapter 2125. of the Revised Code, include terms and conditions to the effect that all claims resulting from or arising out of any one person's bodily injury, including death, shall collectively be subject to the limit of the policy applicable to bodily injury, including death, sustained by one person, and, for the purpose of such policy limit shall constitute a single claim. Any such policy limit shall be enforceable regardless of the number of insureds, claims made, vehicles or premiums shown in the declarations or policy, or vehicles involved in the accident.
R.C. §3937.44