What do the last set of NDC numbers indicate?

The last set of numbers in the National Drug Code (NDC) is indicative of the package size. The NDC is a unique identifier for medications, consisting of three segments: the first segment identifies the manufacturer, the second segment specifies the medication, and the final segment provides details on the packaging, such as the quantity of the drug in the package and the type of container. Understanding this structure is essential for pharmacy technicians to accurately interpret NDCs, which is crucial for inventory management and ensuring that the correct medication quantities are dispensed. This specificity helps in clearly identifying how much of a medication is included, which can influence dosage instructions and patient drug administration.