Okla. Stat. tit. 36, § 3634.3

A. A health insurance plan or policy or health maintenance organization providing prescription drugs as a covered benefit shall provide a pharmacy or group of pharmacies with the right to bid on a periodic basis, but not less than every three (3) years, on any pharmacy contract to provide pharmacy services, including, but not limited to, prescription drugs. B. Nothing in this act shall be interpreted to preclude a health insurance plan or policy or health maintenance organization from establishing an open pharmacy network for the provision of pharmacy services, including, but not limited to, prescription drugs. C. The provisions of this section shall not apply to a health insurance plan or policy or health maintenance organization that maintains an open pharmacy network.