In the NDC, what do the middle four digits specify?

In the National Drug Code (NDC), the middle four digits specifically identify the drug itself, including its formulation and strength. The NDC is a unique identifier for medications and is structured into three segments: the first segment identifies the labeler or manufacturer, the middle segment specifies the specific drug product (which encompasses formulation details such as active ingredients and their strengths), and the last segment identifies the packaging size and type.

Understanding the structure of the NDC is essential for pharmacy technicians as it allows for accurate dispensing, tracking, and billing of pharmaceutical products. The middle four digits serve a crucial role in differentiating among various drug products that a manufacturer may produce, and this specificity is essential for ensuring patient safety and effective medication management.