Hey, congdoc:
I'm not saying the ICD-9 search feature is unusable, but it could be so much better with just a few (seemingly) simple changes.
Probably most people just use the blasted thing and don't give it a second thought, but I am always thinking, "ARRGH... it's almost there; just needs a few more touches...."
Every ICD-9 code should be in our database, but the same ICD-9 code can apply to several diagnoses, and the most common diagnosis associated with a particular ICD-9 code may not be the one its grouped with in our database.