|(a) This chapter implements provisions of the Workers' Compensation Health Care Network Act, Insurance Code Chapter 1305, and provides standards for the certification, administration, evaluation, and enforcement of the delivery of health care services to injured employees by networks contracting with or established by: (1) workers' compensation insurance carriers; (2) employers certified to self-insure under Labor Code Chapter 407; (3) groups of employers certified to self-insure under Labor Code Chapter 407A; and (4) governmental entities that self-insure, either individually or collectively, under Labor Code Chapters 501 - 505, except as described in subsection (c) of this section. (b) This chapter applies to: (1) each person who performs a function or service of a workers' compensation health care network as defined by §10.2 of this subchapter (relating to Definitions), including a person who performs a function or service delegated by or through a workers' compensation health care network; and (2) an insurance carrier as defined by Labor Code §401.011 that establishes or contracts with a workers' compensation health care network. (c) This chapter does not apply to health care services provided to injured employees of a self-insured political subdivision or injured employees of the members of a pool established under Government Code Chapter 791 if the political subdivision or pool elects to provide health care services to its injured employees in the manner authorized under Labor Code §504.053(b)(2), relating to self-insured subdivisions or pools directly contracting with health care providers, or by contracting through a health benefits pool established under Local Government Code Chapter 172. (d) This chapter does not authorize a workers' compensation insurance policyholder who purchases a deductible plan under Insurance Code Article 5.55C to contract directly with a workers' compensation health care network for the provision of health care services to injured employees. (e) If a court of competent jurisdiction holds that any provision of this chapter is inconsistent with any statutes of this state, is unconstitutional, or is invalid for any reason, the remaining provisions of this chapter shall remain in full effect. (f) This chapter becomes applicable January 1, 2006.