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Guideline Current ACR 2013

ACR BI-RADS 5th Edition

Breast Imaging Reporting and Data System. Final assessment categories 0 (incomplete), 1 (negative), 2 (benign), 3 (probably benign), 4A/4B/4C (suspicious, low/moderate/high), 5 (highly suggestive of malignancy), 6 (known biopsy-proven malignancy).

Structured reportUpdated Jul 5, 2026
Applies to
  • Breast imaging: mammography, ultrasound, MRI
  • Screening and diagnostic exams
Classification
  • BI-RADS 0
  • BI-RADS 1
  • BI-RADS 2
  • BI-RADS 3
  • BI-RADS 4A
  • BI-RADS 4B
  • BI-RADS 4C
  • BI-RADS 5
  • BI-RADS 6
Exclusions

None listed

Interactive

Decision tree

Enter a finding to compute a recommendation without leaving the page.

Recommendation builder

Select the BI-RADS final assessment category.

Evidence

References

  1. PrimaryD'Orsi CJ, et al. ACR BI-RADS Atlas, Breast Imaging Reporting and Data System, 5th Edition. American College of Radiology; 2013.
FAQ

Frequently asked

Does this guideline apply to oncology patients?

No — patients with known malignancy fall outside the scope unless the guideline states otherwise. Follow oncologic surveillance protocols instead.