(a) All independent review organizations (IROs) performing independent reviews of adverse determinations made by utilization review agents, health insurance carriers, health maintenance organizations, and managed care entities must comply with this chapter. IROs performing independent reviews of adverse determinations made by certified workers' compensation health care networks and workers' compensation insurance carriers must comply with this chapter, subject to §12.6 of this title (relating to Independent Review of Adverse Determinations of Health Care Provided Under Labor Code