N.J. Stat. § 44:8-132
State aid shall also be payable to any county furnishing hospitalization in a county maternity hospital to nonpaying patients, who are bona fide public assistance cases, on the basis of the per diem rate currently fixed by the department for maternity hospitalization for mother or child, as the case may be, by multiplying the number of patient days of such hospitalization at said rate by the "public assistance percentage" of the several municipalities in which such patients respectively resided at the time of such hospitalization for the current year, which State aid shall be payable from time to time upon the filing with the commissioner by the president or chief executive officer of such county maternity hospital of statements under oath, in such form as shall be required by the commissioner, setting forth the hospitalization so rendered to each nonpaying patient, that each such patient is a bona fide public assistance case and any additional information which may be required by the commissioner, and shall be paid to the county treasurer of the county by the commissioner, as other payments of State aid are made, out of the Municipal Aid Fund or other funds appropriated from the State treasury for such purposes.
N.J.S. § 44:8-132