Talk:National drug code
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If a pharmacy sends an insurance claim to the insuree with an NDC such as "1144325678", how is anyone supposed to be able to discern the labeler, pkg. code or pkg. type. I'd love to know.
There's no asterisk, so it's anyone's guess.
````Dan
- Sorry, Dan. Since neither 01144 nor 11443 represent valid codes in the NDC database (as of today, December 3, 2007), you may have transcribed the number incorrectly. However, your comment did inspire an update of the article to include a working example of how to determine exactly the information you have requested (assuming, of course, that the provider of the drug in question has complied with the law and registered their product with the FDA). cheers, JimScott 01:53, 4 December 2007 (UTC)
The discussion of the NDC format seems to disagree with that at http://www.fda.gov/cder/ndc/. I do not feel confident that I know enough to edit it.
Incorrect
editThis article has undergone strange edits. It is not correct. I happen to be intimately involved with the edition of the NDC code, and so I know the rules. It is not an 11 digit system, but 10, and there is ambiguity and there will remain ambiguity. The limit of 10 digits is hard because of the way in which NDC folds into the GS1 product code. I will investigate the source of the edits and recover to a correct presentation. Gschadow (talk) 05:55, 4 January 2010 (UTC)
- Just to follow up, I have done the edits and it is correct again. Gschadow (talk) 15:39, 4 February 2010 (UTC)
Incorrect
edit“For example, 1234-5678-90, 12345-678-90, and 12345-6789-0 could all be entirely different products with the same barcode 1234567890. To prevent any actual ambiguity from impacting the marketplace, ambiguity checks are part of the new electronic listing process.”
The statement above is incorrect. The four-digit labeler codes always start with a zero, and the five-digit labeler codes always start with a non-zero number. This convention is not explicitly part of the NDC definition, but was adopted by the FDA when the labeler codes were expanded from 3 to 5 digits. [1]
Also, the corrections are incorrect; yes, the NDC is a 10 digit system, but some companies assigned five-digit labeler codes are allowed to use four-digit product codes and two-digit package codes, resulting in an eleven-digit number approved and listed in the National Drug Code Directory. [2]