California Code, Welfare and Institutions Code - WIC § 4706

(a) Except as provided in subdivision (b) to the extent permitted by federal law, all issues concerning the rights of persons with developmental disabilities to receive services under this division shall be decided under this chapter, including those issues related to fair hearings, granted by the Medicaid home and community-services waiver to the State Department of Health Care Services.

(b) Whenever a fair hearing under this chapter involves services provided under the Medicaid home and community-based services waiver, the State Department of Health Care Services shall retain the right, as provided in Section 4712.5, to review and modify any decision reached under this chapter.