We did a bilateral diagnostic mammogram on a patient and because of the findings decided to perform an ultrasound-guided breast biopsy on the same day. A unilateral mammogram was done after the biopsy to verify clip placement. Can we code both of the mammograms?


There is a national correct coding initiative (NCCI) edit that precludes billing both a bilateral and a unilateral mammogram on the same day. The edit has a “0” indicator, so it cannot be bypassed with a modifier. Since there is no limit to the number of views required for a bilateral diagnostic mammogram, all diagnostic images taken on the same day are considered to be included.

This question was answered in our Breast & Bone Density Procedure Coding Guide. For more hot topics relating to radiology services, please visit our store or call us at 1.800.252.1578, ext. 2.


CPT® copyright 2021 American Medical Association (AMA). All rights reserved.

Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

CPT is a registered trademark of the American Medical Association.