Final answer:
In Massachusetts, a pharmacy must complete the partial fill of a CII prescription within 30 days from when the prescription was written, keeping accurate records for each partial fill.
Step-by-step explanation:
In Massachusetts, a pharmacy is allowed to partially fill a prescription for a Schedule II controlled substance (CII), provided they complete the fill within 30 days of the date the prescription was written.
This is in accordance with both federal and Massachusetts state law. If the pharmacist is unable to supply the full quantity prescribed, they may provide a partial quantity and must then supply the balance remaining within the 30-day timeframe. It's important for the pharmacist to keep accurate records of these partial fills.