In this chapter, "health insurer" means an insurance company authorized to provide a hospital, surgical, and medical expense insurance plan in this state, including:

1. (1) a stock insurance company;
2. (2) a reciprocal or interinsurance exchange;
3. (3) a Lloyd's plan;
4. (4) a fraternal benefit society;
5. (5) a stipulated premium company; and
6. (6) a mutual insurance company, including a statewide mutual assessment company or a local mutual aid association.

Added by Acts 2003, 78th Leg., ch. 1274, Sec. 3, eff. April 1, 2005.