APPLICABILITY.

(a) Except as otherwise specifically provided by this chapter, this chapter applies to each preferred provider benefit plan in which an insurer provides, through the insurer's health insurance policy, for the payment of a level of coverage that is different depending on whether an insured uses a preferred provider or a nonpreferred provider.

(b) Unless otherwise specified, an exclusive provider benefit plan is subject to this chapter in the same manner as a preferred provider benefit plan.

(c) This chapter does not apply to:

(1) the child health plan program under Chapter 62, Health and Safety Code; or

(2) a Medicaid managed care program under Chapter 540 or 540A, Government Code, as applicable.