NDC codes as concept_code?

[aostropolets (Anna Ostropolets)]

It means that the official NDC source (which is FDA) doesn’t provide us with those codes. Might indicate that they don’t have them or that your codes are wrong.
For example, other “verio” are there:
http://athena.ohdsi.org/search-terms/terms?vocabulary=NDC&page=1&pageSize=15&query=verio&sort=concept_code&order=desc
If you believe that your codes are correct, then submit the names, codes and start/end dates here:

Missing NDCs remote studies

Thanks, @Vojtech_Huser. However, you need to add: Names/descriptions Timing of use Can you add that? NDCs exist since the early 80ies. No. They dropped the ball in the late 80ies. The key agency is the NLM, and then there are private repositories (Red Book, FDB, Medi-Span, etc.) Because we got it from another source, most likely from Dailymed and the SPL. Because we got it from another source and cobbled the mapping together. But this really should go to the NLM. That’s what we get…