NDC & product identity

5-4-1 format

Definition

A 10-digit NDC with a one-digit package code; the leading zero goes into the last segment.

0169-4132-1 in 5-4-1 becomes 0169-4132-01. Single-digit package codes are common on older listings and on products with very few package configurations.

11-digit NDCThe 5-4-2 billing form of an NDC, produced by padding a leading zero into whichever 10-digit segment is short.Definition 10-digit NDCThe form the FDA publishes, which may be 4-4-2, 5-3-2 or 5-4-1 depending on how the labeler's segments were assigned.Definition

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4-4-2 format 5-3-2 format 5-4-2 format Kit (NDC)Labeler code Leading zero padding Listing expiration date Marketing end date

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5-4-1 format

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