Health & Saf. Code, § 1374.35

(a) After considering the results of a competitive bidding process and any other relevant information on program costs, the director shall establish a reasonable, per-case reimbursement schedule to pay the costs of independent medical review organization reviews, which may vary depending on the type of medical condition under review and on other relevant factors.

(b) The costs of the independent medical review system for enrollees shall be borne by health care service plans pursuant to an assessment fee system established by the director. In determining the amount to be assessed, the director shall consider all appropriations available for the support of this chapter, and existing fees paid to the department. The director may adjust fees upward or downward, on a schedule set by the department, to address shortages or overpayments, and to reflect utilization of the independent review process.