(a) The Harris County Hospital District may contract for indigent health care services with at least one hospital that is:
(1) located in the district;
(2) exempt from federal income tax under Section 501(a), Internal Revenue Code of 1986, and its subsequent amendments, by being listed as an exempt entity under any subdivision of Section 501(c) of that code; and
(3) substantially devoted to providing hospital services to socially and economically disadvantaged individuals in the geographical area of the district.
(b) A contract under this section is subject to Section 281.051(a).