What does the "$K" code represent in the NCIC?

The "$K" code in the National Crime Information Center (NCIC) system signifies "Missing information." When this code appears, it indicates that critical details for a specific record or entry are incomplete or absent, which can hinder the proper processing and retrieval of that information. The purpose of this designation is to notify users that they should look into the records to identify what information is lacking and take steps to complete it. This is vital for maintaining the integrity and accuracy of the data within the NCIC, as missing details can lead to confusion or errors when law enforcement agencies query these records.