This chapter applies only to a health benefit plan that provides benefits for medical or surgical expenses incurred as a result of a health condition, accident, or sickness, including an individual, group, blanket, or franchise insurance policy or agreement, a group hospital service contract, or an individual or group evidence of coverage issued by:
(1) an insurance company;
(2) a group hospital service corporation operating under Chapter 842;
(3) a health maintenance organization operating under Section 1367.053, Subchapter A, Chapter 1452, Subchapter B, Chapter 1507, Chapter 222, 251, or 258, as applicable to a health maintenance organization, Chapter 843, Chapter 1271, and Chapter 1272; or
(4) an approved nonprofit health corporation holding a certificate of authority under Chapter 844.