I have a list of NDCs that have a concept marked as invalid (have valid_end_date). These concepts do not have a standard concept mapping to an RXNorm concept.
2 questions:
Are these invalid concepts without standard mappings because there was never a standard mapping?
Would it ever be the case that a concept to be expired/marked invalid in the future lose its standard concept mapping because it’s invalid? In other words, I have retrospective data with NDCs that may be marked invalid at some point in the future and has a mapping to a standard concept. Would the concept relationship lose the “maps to” relationship because it becomes invalid?
Here’s the list of NDCs that don’t have standard concept mapping and are invalid:
45281453
44889790
44974871
45162217
45368938
44993566
44944467
45117548
44862248
45117889
45034366
44949322
44883625
44987745
45123988
45175139
45210295
44903839
44886722
44954665
Here are more that are valid, but also don’t have a standard concept mapping:
44940675
45180579
45082046
45337947
45064939
45236745
44981255
45356671
45288654
45272388
44982241
45169815
45204935
45051615
44864327
45204968
44933749
45292341
44934545
45159204
45076487