For purposes of this rule:

(1) A "permitted accounting practice" is an accounting practice that departs from the National Association of Insurance Commissioners (NAIC) Accounting Practices and Procedures Manual or state prescribed accounting practices, and has been approved in writing by the commissioner.

(2) "State prescribed accounting practices" are those accounting practices that are incorporated directly or by reference by Titles 48 RCW and 284 WAC applicable to domestic insurers.

(3) A "domestic insurer" includes an entity organized under the laws of this state as an insurer authorized under chapter 48.05 RCW, a fraternal benefit society licensed under chapter 48.36A RCW, a health care service contractor registered under chapter 48.44 RCW, a health maintenance organization registered under chapter 48.46 RCW, a self-funded multiple employer welfare arrangement authorized under chapter 48.125 RCW, or other entity regulated under Title 48 RCW and required to comply with the NAIC Accounting Practices and Procedures Manual and state prescribed accounting practices.