What does the last two digits of an NDC number indicate?

The last two digits of a National Drug Code (NDC) number specifically indicate the package size of the drug. The NDC is a unique identifier for medications and is structured into three segments. In this structure, the first segment represents the labeler code (which identifies the manufacturer), the second segment indicates the product code (which provides details about the drug itself, such as its strength and dosage form), and the last segment corresponds to the package code, which details the specific packaging configuration or size. Thus, these two digits provide crucial information about how much medication is contained within a package, allowing for better inventory management and ensuring that healthcare providers and pharmacies can accurately dispense and label medications based on their sizes.