NDC codes unrecognizable from claims file

[krfeeney (Kristin Kostka, MPH)]

Check out this post:

NDCs Changing Over Time

just pasting the examples from the OHDSI wiki here There is a problem that NDC can update the vocabulary using the same concepts for a different drug concepts: in the 18/12/17 release we found out that: 44865343 “Aminophylline 200 MG Oral Tablet” changed to “Cephalexin 500 MG Oral Capsule” 45092451 “Aluminum Hydroxide 200 MG / Magnesium Hydroxide 200 MG Oral Tablet [Rulox #1]” changed to “Allopurinol 100 MG Oral Tablet” 45084807 “GLIMEPIRIDE 4 MG TABLET” changed to “Naproxen sodium 550 MG O…

This is a great example of what we like to call “Bad NDCs”.