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Converting NDCs from 10 digits to 11 digits

On drug packaging, many NDCs are displayed in a 10-digit format but correct billing of an NDC requires 11 digits in a 5-4-2 format. Conversion from 10 digits to 11 digits requires the placement of an extra zero based on the 10-digit format.

The table below shows common 10-digit NDC formats and how to convert to an 11-digit format with the correct placement of a zero (shown in red). 

Hyphens are used to show the formatting examples for NDCs, however, do not use hyphens when entering data on your claim. If unsure, it is recommended that providers consult with their pharmacy staff or supplier regarding the conversion from 10 digits to 11 digits.

Converting 10 Digits to 11 Digits.jpg

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