California Code, Welfare and Institutions Code - WIC § 741

The juvenile court may, in any case before it in which a petition has been filed as provided in Article 16 (commencing with Section 650), order that the probation officer obtain the services of such psychiatrists, psychologists, physicians and surgeons, dentists, optometrists, audiologists, or other clinical experts as may be required to assist in determining the appropriate treatment of the minor and as may be required in the conduct or implementation of the treatment. Payment for the services shall be a charge against the county.

Whenever diagnosis or treatment pursuant to this section is due to, or related to, drug or alcohol use, the cost thereof shall be considered for the use of funds made available to the county from state or federal sources for the purpose of providing care and treatment for drug- and alcohol-related illness or for drug or alcohol abuse.