What does the first set of numbers in an NDC number identify?

The first set of numbers in a National Drug Code (NDC) specifically identifies the manufacturer or distributor of the drug. The NDC is a unique three-segment number that categorizes the drug, and this first segment, consisting of 4 to 5 digits, is specifically assigned to each manufacturer or labeler registered with the FDA.

This segmentation is crucial for regulatory and inventory management within pharmacies, as it allows easy identification of who produced or packaged the medication. Thus, knowing the manufacturer aids pharmacists and healthcare providers in ensuring the correct product is supplied and helps in tracking any recalls or safety information associated with a specific manufacturer.

The subsequent segments of the NDC would provide information regarding the specific product and the package size, further helping to distinguish different drugs made by the same manufacturer. This layered classification system is essential for the proper dispensing and management of pharmaceuticals in the healthcare system.