WRAP: Special Database Codes
This document describes the special database codes found in the WRAP Database.
Special Database Codes
999 – Missing data (B12 can have a value of 999, so missing data is 9999)
888 – We have data but do not feel it is valid
777 – Information requested but has not been returned (IQ Code and IADL)
666 – Information under Review (CDR)