Tex. Insurance Code § 546.002

This chapter applies only to a health benefit plan that:

(1) provides benefits for medical or surgical expenses incurred as a result of a health condition, accident, or sickness, including:

(A) an individual, group, blanket, or franchise insurance policy or insurance agreement, a group hospital service contract, or an individual or group evidence of coverage that is offered by:

(i) an insurance company;

(ii) a group hospital service corporation operating under Chapter 842;

(iii) a fraternal benefit society operating under Chapter 885;

(iv) a stipulated premium company operating under Chapter 884; or

(v) a health maintenance organization operating under Chapter 843; and

(B) to the extent permitted by the Employee Retirement Income Security Act of 1974 (29 U.S.C. Section 1001 et seq.), a health benefit plan that is offered by:

(i) a multiple employer welfare arrangement as defined by Section 3 of that Act;

(ii) another entity not authorized under this code or another insurance law of this state that directly contracts for health care services on a risk-sharing basis, including a capitation basis; or

(iii) another analogous benefit arrangement; or

(2) is offered by an approved nonprofit health corporation that holds a certificate of authority under Chapter 844.