California Code, Welfare and Institutions Code - WIC § 14129.4

(a) An emergency medical transport provider subject to the fee may be assessed the amount the provider would be required to pay to the department if the add-on increase to the fee-for-service payment schedule described in Section 14129.3 were already approved, but shall not be required to pay the fee until the add-on increase to the fee-for-service payment schedule described in Section 14129.3 is approved. The director shall establish a schedule for payment of retroactive fees pursuant to this subdivision in consultation with emergency medical transport providers to minimize the disruption to the cashflow of emergency medical transport providers.

(b) The department may retroactively implement the add-on increase to the fee-for-service payment schedule pursuant to Section 14129.3 to the extent the department determines that federal financial participation is available and is not otherwise jeopardized.