Section 721.055 - Partial Fill Prescriptions(A) A pharmacist filling a Prescription for a schedule II controlled substance shall, if requested by the patient, dispense the prescribed controlled substance in a lesser quantity than indicated on the Prescription, pursuant to M.G.L. c. 94C, § 18(d¾). If the Prescription was issued by a prescriber from a location other than the Commonwealth of Massachusetts, as indicated by the address of the prescriber on the Prescription, the Prescription must be presented for initial partial fill not later than five calendar days after the Prescription issue date.(B) Where a Prescription has been partially filled in accordance with 105 CMR 721.055(A), the remaining portion of the Prescription may be filled upon patient request in accordance with federal law; provided, however, that: (1) only the same pharmacy that originally dispensed the lesser quantity shall dispense the remaining portion; and(2) the remaining portion of the Prescription is filled not later than 30 days after the Prescription issue date.(C) Upon dispensing a partial fill of a Prescription under 105 CMR 721.055(A), or dispensing the remaining portion of the Prescription under 105 CMR 721.055(B), the pharmacist or the pharmacist's designee shall make a notation in the patient's record maintained by the pharmacy, which shall be accessible to the prescribing practitioner by request, indicating that the Prescription was partially filled and the quantity dispensed.Adopted by Mass Register Issue 1407, eff. 12/27/2019.