(a) The following definitions shall govern the construction of this section, unless the context requires otherwise:

1. (1) “Capital outlay” means net disproportionate share hospital revenues used for projects that involve the acquisition, construction, renovation, improvement, modernization, expansion, or replacement of a plant, building, or fixed or movable equipment, including debt service for facilities used in the provision of county health care services or mental health services.
2. (2) “County health care services” means those services described in subdivision (a) of Section 16801.
3. (3) “County financial maintenance of effort” means the level of financial support required of a county pursuant to Section 16990.
4. (4) “Net disproportionate share hospital revenues” means the amount determined by subtracting the total intergovernmental transfers made by a county pursuant to Sections 14163 and 14164 from the total amount of the payment adjustments paid to the county’s hospital or hospitals pursuant to Section 14105.98. This calculation shall reflect any amendment to Sections 14163 and 14164, including amendments to paragraph (2) of subdivision (d) of Section 14163.
5. (5) “Mental health services” means those programs transferred or otherwise financed pursuant to Chapters 89 and 91 of the Statutes of 1991.

(b)

1. (1) Each county shall deposit all net disproportionate share hospital revenues into a fund or funds other than the county general fund, and shall retain those revenues until utilized for the purposes described in this section.
2. (2) All disproportionate share hospital revenues are intended to support health care services rendered by disproportionate share hospitals, including, but not limited to, health or mental health services and health or mental health capital outlays. Net disproportionate share hospital revenues shall not be used to supplant or offset county general funds or other funds that were expended or encumbered for those purposes prior to July 1, 1991.
3. (3) Net disproportionate share hospital revenues shall be included in computing county financial maintenance of effort only as set forth in subdivision (c).

(c) For the 1991–92 fiscal year, and for each fiscal year thereafter, for purposes of computing county financial maintenance of effort, net disproportionate share hospital revenues deposited in accordance with subdivision (b) shall be treated as follows:

1. (1) Net disproportionate share hospital revenues utilized for a county for mental health services, or for capital outlay for health or mental health services, shall not be counted as revenue in the computation of county financial maintenance of effort.
2. (2) Net disproportionate share hospital revenues that are not utilized as described in paragraph (1) shall be counted as revenue in the computation of a county’s financial maintenance of effort only to the extent that by not counting those revenues for a particular fiscal year, a county’s net county costs for county health care services exceeds the amount of county funds required to satisfy the requirements of Section 16990 for the particular fiscal year.
3. (3) Net disproportionate share hospital revenues counted as revenue in the calculation of county financial maintenance of effort for a particular year pursuant to paragraph (2) shall not be counted as revenue in the calculation of county financial maintenance of effort relating to any subsequent fiscal year.