In addition to tracking codes in the fields provided, the system has a special feature associated with the sub-code fields. For fields that have sub-codes (e.g. 92A, 92B), the user can enter the entire string of codes in the main code field (e.g. 92). The system will then break down the string of codes and automatically fill the sub-codes into the appropriate fields (e.g. 92A). Alternatively, you can enter the sub-codes directly into the sub-code fields (e.g. 92A) and the system will automatically enter the entire string of codes into the main code field (e.g. 92).