How many digits are in an NDC number?

An NDC (National Drug Code) number consists of 10 digits, typically formatted as three segments: the labeler code (4 or 5 digits), the product code (3 or 4 digits), and the package code (1 or 2 digits). The segments are usually represented in the format: 12345-6789-01. This structure helps identify specific medications and their packaging.