The department shall allocate money derived from the Hospital Services Account in the fund to each county that is eligible to participate in the CMSP pursuant to

Section in the following manner: (

a) The combined total of hospital uncompensated care costs for all county and noncounty hospitals in each county that is eligible to participate in the CMSP pursuant to

Section shall be calculated by using the

definitions, procedures, and data elements specified in

Section 16945. (b)

(1) The office shall determine each county’s 1989–90 fiscal year share by using the calendar year data, as adjusted by the office, existing on the statewide file on September 1, 1989.

(2) The office shall determine each county’s share for the fiscal years after the 1989–90 fiscal year by using the data from the quarterly reports for the calendar year preceding the fiscal year, as adjusted by the office and existing on the statewide file on April immediately preceding the fiscal year.

(3) The office shall determine each county’s share based on that county’s total hospital uncompensated care costs, divided by the total hospital uncompensated care costs for all counties that are eligible to participate in the CMSP pursuant to

Section 16809, and by multiplying that product by the amount appropriated from the Hospital Services Account in the fund for purposes of this chapter.

(4) The amounts calculated pursuant to paragraphs (2) and (3) shall be each county’s allocation from the total amount available for allocation to the counties under this chapter. (

c) The amounts calculated pursuant to paragraph (4) of subdivision (

b) shall be divided and allocated in accordance with

Section 16946. Sections 16946, 16947, 16948, and shall be applicable to counties and hospitals receiving these funds.