Oklahoma constitution
Article II: bill of rights
Section 37

1. Affect which health care services a health care provider or hospital is required to perform or provide;
2. Affect which health care services are permitted by law;
3. Prohibit care related to workers’ compensation;
4. Affect laws or rules in effect as of January 1, 2010; or
5. Affect the terms or conditions of any health care system to the extent that those terms and conditions do not have the effect of punishing a person or employer for paying directly for lawful health care services or a health care provider or hospital for accepting direct payment from a person or employer for lawful health care services.