Our worksheet, prepared by the front line, asks for the NAICS Code, which allows Credit to input that into the platform system, which in turn gets uploaded to the mainframe at funding.
We do not code our consumer or residential mortgage portfolio, just the commercial and agricultural loans.
We use
http://www.naics.com/search.htm which is a free NAICS code search website. On top of that our platform system, which has a field for NAICS Code, has a library of the actual codes. This means that a processor has to at least enter a valid code.