When correcting or submitting late charges on 837 institutional claims, use bill type xx7, Replacement of Prior Claim. Do not submit corrected or additional charges using bill type xx5, Late Charge Claim.
When correcting or submitting late charges on a 1500 professional claim, use the following frequency code in Box 22 and use left justified to enter the code. Include the 12-digit original claim number under the Original Reference Number in this box.
Frequency code 7 Replacement of Prior Claim: Corrects a previously submitted claim.
Frequency code 8 Void/Cancel of Prior Claim: Indicates this bill is an exact duplicate of an incorrect bill previously submitted. This code will void the original submitted claims.