Ohio Rev. Code Ann. § 3923.24
(A) Notwithstanding section 3901.71 of the Revised Code, every certificate furnished by an insurer in connection with, or pursuant to any provision of, any group sickness and accident insurance policy delivered, issued for delivery, renewed, or used in this state on or after January 1, 1972, every policy of sickness and accident insurance delivered, issued for delivery, renewed, or used in this state on or after January 1, 1972, and every multiple employer welfare arrangement offering an insurance program, which provides that coverage of an unmarried dependent child of a parent or legal guardian will terminate upon attainment of the limiting age for dependent children specified in the contract shall also provide in substance both of the following:
(1) Once an unmarried child has attained the limiting age for dependent children, as provided in the policy, upon the request of the insured, the insurer shall offer to cover the unmarried child until the child attains twenty-six years of age if all of the following are true:
(2) That attainment of the limiting age for dependent children shall not operate to terminate the coverage of a dependent child if the child is and continues to be both of the following:
(D) Nothing in this section shall do any of the following:
(F) As used in this section, "health benefit plan" has the same meaning as in section 3924.01 of the Revised Code and also includes both of the following: