Allowable payments for services provided by a county or city ambulance service shall be paid directly or shall be co-payable to the county or city ambulance service provider. As used in this subsection, “county or city ambulance service” means ambulance services provided by a county or county-franchised ambulance service supplemented by county funds, or a municipally owned and operated ambulance service or by an ambulance service supplemented by municipal funds. (1981, c. 355; 1981 (Reg. Sess., 1982), c. 1398, ss. 3, 4; 1983, c. 922, s. 21.10; 1985, c. 732, s. 38; 1985 (Reg. Sess., 1986), c. 1020, s. 20; 1998-1, s. 4(h); 2007-323, s. 28.22A(c); 2008-107, s. 10.13(m); 2008-168, s. 1(a), (c), (d); 2009-16, s. 5(f); 2009-83, s. 1; 2010-194, s. 18(a); 2011-85, s. 2.4(a).)