When reviewing a prescription for a C-II substance, which item is not required?

The correct answer is the National Drug Code (NDC) number, as it is not a required component when reviewing a prescription for a controlled substance, specifically Schedule II (C-II) drugs.

While the NDC number is essential for billing and inventory purposes in the pharmacy and helps in identifying specific drug formulations, it is not mandated by law to be included on a prescription for C-II substances. In contrast, the DEA number, which is a unique identifier for prescribers of controlled substances, is essential for ensuring that the prescription is valid and that the prescriber is authorized to prescribe C-II medications.

Additionally, DAW (Dispense as Written) information is crucial as it indicates whether a generic substitution is permitted. The patient's address is also a vital part of the prescription as it identifies the recipient of the medication and is important for record-keeping and legal requirements. All these elements are critical for compliance and safety regarding the prescription of controlled substances, making the NDC number the only item not required on a C-II prescription.