This chapter does not apply to a public benefit hospital entity that:
(1) Individually self-insures for property and liability risks; or
(2) Participates in a risk pooling arrangement, including a risk retention group or a risk purchasing group, regulated under chapter 48.92 RCW, is a captive insurer authorized in its state of domicile, or participates in a local government risk pool formed under chapter 48.62 RCW.