Ohio Rev. Code Ann. § 5160.021
(A) When the medicaid director is authorized by a statute to adopt a rule, the director shall adopt the rule in accordance with the following:
(1) Chapter 119. of the Revised Code if either of the following applies:
(2) Section 111.15 of the Revised Code, excluding divisions (D) and (E) of that section, if either of the following applies: