Due to recent provider inquiries regarding incorrect denials of CPT codes billed with modifier 59, Cahaba ran a report to identify all claims denied as duplicates with the use of modifier 59. The report is being researched and adjustments will be made to incorrectly denied claims using an automated system. Until the claims have all been adjusted, our Clerical Error Reopening lines will not adjust claims denied as a duplicate appended with modifier 59 to avoid creating overpayments.