I have quite a few NDC codes that I am not able to find them in Concept table. Each of them has significant count in the database so they are not rare drugs. I am listing 2 of them here. I found them in the NDC website but they are not concept table. These are not new drugs. The marketing dates are in the year of 1973 and 2015 respectively. So it can’t be due to our vocabulary not refreshed. I also tried following steps:
1). Drop off the last 2 digits and hope to find a 9-digit match
2). Search the entire Concept table without a vocabulary ID filter, hoping to find matches in RxNorm or other vocabulary
3). Search in Atlas
I have no luck with all above attempts. So can anyone help?
NDC code 1: 52544008728
NDC code 2: 68645051070