Thanks, @Vojtech_Huser. However, you need to add:
- 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 from RxNorm, and that's what we want to use as a standard routine way of maintaining.