Ohio Rev. Code § 3937.23: Prohibiting increase in cost when insured not at fault involved in accident with uninsured motorist.

No insurer shall increase the cost of a private passenger automobile insurance policy based on the insured's involvement in a motor vehicle accident with an uninsured or underinsured motorist, when both of the following apply:

(A) The insured's action is not a proximate cause of any loss, damage, injury, or death arising out of the accident;

(B) The insured has not been convicted of, pleaded guilty to, or pleaded no contest to, a violation of law as a result of the accident.