Medical
8 Min ReadThe 11-Digit NDC Barcode Guide
Master the US pharmaceutical standard. This guide explains how to normalize National Drug Codes for FDA compliance and healthcare billing.
Why NDCs Must Be 11 Digits
In the United States, the National Drug Code (NDC) identifies every drug intended for human use. While the FDA assigns 10-digit codes, HIPAA regulatory standards mandate an 11-digit format for all healthcare transactions.
NDC Normalization Tool
Use the tool below to convert 10-digit codes or generate standardized 11-digit NDC barcodes. Correctly place the leading zero based on your drug's specific segment pattern.
11-Digit Normalization Guide
NDC Preview
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Normalization Rules (10 to 11 Digits)
To achieve the mandatory 11-digit standard, a leading zero is added based on the FDA configuration:
| Original | Normalized (11-Digit) | Rule |
|---|---|---|
| 4-4-2 | 0XXXX-XXXX-XX | Zero added to segment 1 |
| 5-3-2 | XXXXX-0XXX-XX | Zero added to segment 2 |
| 5-4-1 | XXXXX-XXXX-0X | Zero added to segment 3 |