California Code, Health and Safety Code - HSC § 11849.5

(a) In determining the amounts that may be paid, fees paid by persons receiving services or fees paid on behalf of those persons by the federal government, by the California Medical Assistance Program set forth in Chapter 7 (commencing with Section 14000) of Part 3 of Division 9 of the Welfare and Institutions Code, and by other public or private sources, shall be deducted from the costs of providing services. Whenever feasible, individuals who are experiencing substance use disorders who are eligible for alcohol and other drug services under the California Medical Assistance Program shall be treated in a facility approved for reimbursement in that program.

(b) General unrestricted or undesignated private charitable donations and contributions made to charitable or nonprofit organizations shall not be considered as “fees paid by persons” or “fees paid on behalf of such persons” under this section and the contributions shall not be applied in determining the amounts to be paid. The unrestricted contributions shall not be used in part or in whole to defray the costs or the allocated costs of the California Medical Assistance Program.