(b)

1. (1) For purposes specified in subdivision (c), the office shall use data from the quarterly reports required by Section 128740 of the Health and Safety Code.
2. (2) For the 1989–90 fiscal year computations, the office shall use the 1988 calendar year data, as adjusted by the office, existing on the statewide file on September 1, 1989.
3. (3) For the computations for fiscal years after the 1989–90 fiscal year, the office shall use the data from the quarterly reports for the calendar year preceding the computational fiscal year, as adjusted by the office, existing on the statewide file on April 15 immediately preceding the computational fiscal year.

4. (4)

   1. (A) Except as provided in subparagraphs (B), (C), and (D), the definitions, procedures, and data elements specified in Chapter 3 (commencing with Section 16920) shall be used in all computations required in subdivision (c).

   2. (B) For the 1991–92 fiscal year, the following definitions shall be used in all computations required in subdivision (c):

      1. (i) “Uncompensated care charges” means the sum of the charges related to patients falling within the charity-other category in the 1990 calendar year and 25 percent of the charges related to patients falling within the bad debts category in the first two quarters of the 1990 calendar year, as both categories of charges are reported quarterly to the office pursuant to Section 128740 of the Health and Safety Code.
      2. (ii) “Uncompensated care costs” means that amount calculated by applying an overall hospital cost-to-charge ratio, calculated by dividing gross operating expenses by gross inpatient and outpatient revenue, as reported quarterly to the office, to uncompensated care charges.

   3. (C) For the 1992–93 fiscal year, the following definitions shall be used in all computations required in subdivision (c):

      1. (i) “Uncompensated care charges” means the charges related to patients falling within charity-other, as reported quarterly to the office pursuant to Section 128740 of the Health and Safety Code.
      2. (ii) “Uncompensated care costs” means that amount calculated by applying an overall hospital cost-to-charge ratio, calculated by dividing gross operating expenses by gross inpatient and outpatient revenue, as reported quarterly to the office, to uncompensated care charges.

   4. (D) For the 1993–94, 1994–95, 1995–96, 1996–97 and subsequent fiscal years, the following definitions shall be used in all computations required in subdivision (c):

      1. (i)

         1. (I) For county hospitals and for all hospitals operating in counties with no county hospital, “uncompensated care charges” means the charges related to patients falling within charity-other, gross inpatient revenue-county indigent programs and gross outpatient revenue-county indigent programs, as reported quarterly to the office pursuant to Section 128740 of the Health and Safety Code.
         2. (II) For noncounty hospitals operating in a county with a county hospital, “uncompensated care charges” means the charges related to patients falling within charity-other and county indigent programs contractual adjustments, as reported quarterly to the office pursuant to Section 128740 of the Health and Safety Code.
      2. (ii) “Uncompensated care costs” means that amount calculated by applying an overall hospital cost-to-charge ratio, calculated by dividing gross operating expenses less other operating revenue by gross inpatient and outpatient revenue, as reported quarterly to the office, to uncompensated care charges.

(c) The office shall compute the following data on uncompensated care costs reported by hospitals located within each MISP county and each CMSP county:

1. (1) The sum of uncompensated care costs for all hospitals.
2. (2) The sum of uncompensated care costs for all noncounty hospitals.
3. (3) The sum of uncompensated care costs for all county hospitals.
4. (4) The uncompensated care costs of each hospital within the county.
5. (5) The percentage derived from dividing the result of paragraph (2) by the result of paragraph (1).
6. (6) The percentage derived from dividing the result of paragraph (3) by the result of paragraph (1).
7. (7) The percentage for each individual hospital derived from dividing each noncounty hospital’s uncompensated care cost in paragraph (4) by the amount in paragraph (2).