California Code, Health and Safety Code - HSC § 11707

(a) A third party shall not pay damages awarded under this division, or provide a defense or money for a defense, on behalf of an insured under a contract of insurance or indemnification.

(b) A cause of action authorized pursuant to this division may not be assigned, either expressly, by subrogation, or by any other means, directly or indirectly, to any public or publicly funded agency or institution.