Ohio Revised Code Title XVII. Corporations Partnerships § 1753.13

Every individual or group health insuring corporation policy, contract, or agreement that provides basic health care services but does not allow direct access to obstetricians or gynecologists shall permit a female enrollee to obtain covered obstetric and gynecological services from a participating obstetrician or gynecologist without obtaining a referral from the enrollee's primary care provider.

No individual or group health insuring corporation policy, contract, or agreement may limit the number of allowable visits to a participating obstetrician or gynecologist. A health insuring corporation may require a participating obstetrician or gynecologist to comply with the health insuring corporation's coverage protocols and procedures, including utilization review, for obstetric and gynecological services.

A health insuring corporation policy, contract, or agreement may not impose additional copayments for directly accessed obstetric and gynecological services, unless the policy, contract, or agreement imposes additional copayments for direct access to any participating provider other than a primary care provider.