One possible reason for this is because you are entering a different list of diagnosis codes for each charge line on the claim. To correct this, enter the EXACT same list of diagnosis codes in the exact same order for diagnosis codes 1 through 12 on each charge line. So, if some diagnosis codes do not apply to all procedure codes, list them on each procedure code anyway in the exact same order. Then, to specify which diagnosis codes apply to each procedure, check up to 4 diagnosis pointers for each charge line.
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