16 Pa. Stat. § 5323
The county commissioners may admit patients to said hospital who are resident within any other county of the Commonwealth, provided such other county agrees to reimburse the county in which the hospital is located for all charges in connection with the admission, maintenance, care and treatment of such patients. Authority is hereby conferred upon all counties in the State to pay to any other county in which such hospital is located reasonable charges for patients cared for by said hospital resident in the county paying such charges. All money received from the care and maintenance of patients or from gifts or donations shall be paid into the county treasury and shall be used only for the maintenance of such hospitals. County commissioners are authorized and empowered to receive contributions, donations, property and trust funds for the erection and maintenance of hospitals as provided in this act.
16 P.S. § 5323