The board of hospital trustees shall have power to determine whether or not patients presented to such public hospital for treatment are subjects of charity, and shall fix the charges for occupancy, nursing, care, medicine, and attendance, other than medical or surgical attendance, of those persons able to pay for same, as the board of trustees may deem just and proper, the receipts therefor to be paid by him or her to the hospital fund.
Fla. Stat. § 155.20