N.J. Stat. § 30:4D-35a
In addition to the reimbursement required pursuant to section 1 of P.L.1979, c.27 (C.30:4D-34), any eligible person under the Pharmaceutical Assistance to the Aged and Disabled program, upon receiving proof of eligibility from the department and submitting proof of expenditure to the department, as the department may prescribe, shall be reimbursed for the remainder of the costs of all prescription drugs purchased by such person in an amount equal to the value of the benefit the person would have received had that person been enrolled in the Pharmaceutical Assistance to the Aged and Disabled program at the time of purchase, minus the required copayment per prescription, during the period commencing 30 days before such person's properly completed application was received by the department and ending on the date on which such person received proof of eligibility from the department; provided, however, that no reimbursement under this section shall be made for any prescription drug purchased prior to the first day of the fourth month next following the effective date of sections 2 through 6 of P.L.2023, c.79 (C.30:4D-22.4 et al.).
N.J.S. § 30:4D-35a