California Code, Welfare and Institutions Code - WIC § 5400.1

(a) The State Department of Health Care Services shall issue guidance regarding Medi-Cal reimbursement for covered Medi-Cal services provided to an individual receiving involuntary treatment for a severe substance use disorder pursuant to this part.  This guidance shall be consistent with Medi-Cal reimbursement for covered Medi-Cal services provided to an individual receiving involuntary treatment for a mental health disorder pursuant to this part, to the extent that federal financial participation under the Medi-Cal program is not jeopardized and all necessary federal approvals have been obtained.

(b) Notwithstanding Chapter 3.5 (commencing with Section 11340) of Part 1 of Division 3 of Title 2 of the Government Code, the State Department of Health Care Services may implement, interpret, or make specific this section, in whole or in part, by means of plan or county letters, information notices, plan or provider bulletins, or other similar instructions, without taking further regulatory action.