Ohio Revised Code Title XXVII. Courts Revised Code General Provisions Special Remedies § 2711.22

(A) Except as otherwise provided in this section, a written contract between a patient and a hospital or healthcare provider to settle by binding arbitration any dispute or controversy arising out of the diagnosis, treatment, or care of the patient rendered by a hospital or healthcare provider, that is entered into prior to the diagnosis, treatment, or care of the patient is valid, irrevocable, and enforceable once the contract is signed by all parties. The contract remains valid, irrevocable, and enforceable until or unless the patient or the patient's legal representative rescinds the contract by written notice within thirty days of the signing of the contract. A guardian or other legal representative of the patient may give written notice of the rescission of the contract if the patient is incapacitated or a minor.

(B) As used in this section and in sections 2711.23 and 2711.24 of the Revised Code: