Unifying Concepts

ACR/BI-RADS Breast Imaging Reporting and Data System

The BIRADS acronym stands for Breast Imaging-Reporting and Data System which is a widely accepted risk assessment and quality assurance tool in mammography, ultrasound or MRI.

BI-RADS Category Assessment Clinical Management Recommendation(s)
0 Assessment incomplete Need to review prior studies and/or complete additional imaging
1 Negative Continue routine screening
2 Benign finding Continue routine screening
3 Probably benign finding Short-term follow-up mammogram at 6 months, then every 6 to 12 months for 1 to 2 years
4 Suspicious abnormality Perform biopsy, preferably needle biopsy
5 Highly suspicious of malignancy; appropriate action should be taken. Biopsy and treatment, as necessary.
6 Known biopsy-proven malignancy, treatment pending Assure that treatment is completed



  1. Liberman L, Menell JH. Breast imaging reporting and data system (BI-RADS). Radiol Clin North Am May 2002; 40: 409-30. [Medline]
  2. Eberl MM, Fox CH, Edge SB, Carter CA, Mahoney MC.BI-RADS classification for management of abnormal mammograms. J Am Board Fam Med. 2006 Mar-Apr;19(2):161-4. [Medline]


Created: Jul 23, 2008

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