Ohio Rev. Code Ann. § 3937.29
(A) An insurer that intends to cancel, terminate, or otherwise not renew all policies of medical malpractice insurance that it has issued to any class, type, or specialty of practitioner, or that intends to cancel, terminate, or otherwise not renew all policies of medical malpractice insurance in a specific geographic area, which may include the state as a whole, shall file written notice of its intended action with the superintendent of insurance. These actions by an insurer are not effective unless the written notice is filed with the superintendent within the following time frames:
(B) The written notice filed with the superintendent under division (A) of this section shall contain all of the following information:
(D) An insurer may refuse to renew a policy of medical malpractice insurance by mailing a notice of the insurer's intention to the agent of record and to the insured at the insured's last known address at least sixty days prior to the expiration date of the policy. The notice mailed under this division shall contain all of the following information:
(E) If the notice required by divisions (C) and (D) of this section is mailed less than sixty days before the expiration date of the policy, the insured's coverage then in effect remains in effect until sixty days after the date of mailing the notice unless either of the following is true:
(F) If the insured's coverage is extended beyond the original expiration date of the policy as provided by division (E) of this section, the premium for the time after the original expiration date must be calculated using the rates originally applicable to the insured's coverage then in effect. The insurer shall notify the insured of the amount of the premium for the time after the expiration of the insured's coverage then in effect. The insured shall pay the premium unless either of the following is true: