Any hospital district created by the General Assembly shall be authorized to own, lease, operate, maintain, convey, sell, or otherwise dispose of "hospital facilities", as defined in § 44-7-1430(f), and as authorized by § 6-21-100. Additionally, any hospital district shall be authorized to mortgage its hospital facilities so long as the action is made in connection with the purchase of the hospital district’s indebtedness by any federal agency or the guarantee of the hospital district’s indebtedness by any federal agency. Any hospital district shall be authorized to own, operate, convey, sell, or lease hospital facilities located outside the current limits of the hospital district in any county adjacent to the boundaries of the hospital district, as set out in the hospital district’s enabling legislation, all on such terms as its governing body shall approve, whenever it shall be economically feasible. Additionally, any hospital district shall be authorized to create and establish an entity under Chapters 31 or 44, Title 33.