Cal. Welfare and Institutions Code § 15802

(a) The State Department of Health Care Services may issue rules and regulations to carry out the purposes of this part. (b) Notwithstanding subdivision (a) or Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code, the department, without taking any further regulatory actions, may implement, interpret, or make specific this part and amend or repeal regulations and orders adopted by the Managed Risk Medical Insurance Board as provided in Section 15801 by means of all-county letters, plan letters, plan or provider bulletins, or similar instructions, without taking regulatory action during the transition of the programs to the department. Thereafter, the adoption and readoption of regulations to implement, interpret, or make specific this part shall be deemed to be an emergency that calls for immediate action to avoid serious harm to the public peace, health, safety, or general welfare for purposes of Sections 11346.1 and 11349.6 of the Government Code, and the department is exempted from the requirement that it describe facts showing the need for immediate action. The regulations shall become effective immediately upon filing with the Secretary of State.