Ohio Rev. Code § 5162.022: Director's rules binding.

The medicaid director's rules governing medicaid are binding on other state agencies and political subdivisions that administer one or more components of the medicaid program, or one or more aspects of a component, pursuant to contracts entered into under section 5162.35 of the Revised Code. No state agency or political subdivision may establish, by rule or otherwise, a policy governing medicaid that is inconsistent with a medicaid policy established, in rule or otherwise, by the director.