Breast Imaging-Reporting and Data System Assessment Category 0

**Semantic type:** Classification

**Definition:** An assessment category of the American College of Radiology Breast Imaging-Reporting and Data System (BI-RADS) that indicates that the findings of a breast imaging study are incomplete. Additional imaging evaluation is needed and/or previously obtained images are not available at the time of reading.

**Synonyms:** - BI-RADS 0