N.J. Stat. § 30:4A-11
The State House Commission in November of each year shall compute and determine the rate per day to be paid for maintaining, treating and diagnosing a person, such rate to become effective on January 1 next following, and the person, court or agency requesting the diagnostic services shall be required to pay such rate of maintenance. The superintendent of the center shall cause regular financial statements to be issued to the several agencies utilizing the services of the center and the revenue when received shall be forwarded to the State Treasurer to become part of the General State Fund. Any funds expended by any court or agency for diagnostic services shall be a proper charge against the person diagnosed or his estate or his legally responsible relatives and may be recovered and reimbursed to said court or agency by the entry of an appropriate order of reimbursement or by any other legal process available for the recovery of just debts and legal obligations.
N.J.S. § 30:4A-11