(a) Except as provided by Subsection (b), this chapter applies to:
(1) each of the following domestic or commercially domiciled insurers:
(A) a capital stock insurance company;
(B) a mutual insurance company;
(C) a title insurance company;
(D) a fraternal benefit society;
(E) a Lloyd's plan;
(F) a reciprocal or interinsurance exchange;
(G) a group hospital service corporation or a nonprofit hospital, medical, or dental service corporation;
(H) a risk retention group; and
(I) a nonprofit legal services corporation; and
(2) a domestic or commercially domiciled health maintenance organization.
(b) This chapter does not apply to a domestic insurer that engages in the business of insurance only in this state or to a domestic health maintenance organization that engages in the business of a health maintenance organization only in this state until the insurer or health maintenance organization is authorized to engage in the business of insurance or the business of a health maintenance organization, as applicable, in another state.