What fields are used to detect a duplicate medical bill?
The WCIS compares the insurer FEIN, claim administrator claim number, unique bill identification number, and the number of lines in each bill to detect duplicate medical bills. When the same data values for all the above-listed data elements occur, the WCIS puts the 057 error in the LQ segment and the unique bill identification number in the RED segment containing the bad data field in the 824 detailed acknowledgment.