R92.0Mammographic microcalcification found on diagnostic imaging of breast

R92.0 is the ICD-10-CM diagnosis code for Mammographic microcalcification found on diagnostic imaging of breast. It belongs to category R92 (abnormal and inconclusive findings on diagnostic imaging of breast), block R90-R94 (abnormal findings on diagnostic imaging and in function studies, without diagnosis) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within R92 (abnormal and inconclusive findings on diagnostic imaging of breast), R92.0 is specifically for Mammographic microcalcification found on diagnostic imaging of breast. Related codes cover Mammographic calcification found on diagnostic imaging of breast (R92.1), inconclusive mammogram (R92.2), Mammographic density found on imaging of breast (R92.3) and other abnormal and inconclusive findings on diagnostic imaging of breast (R92.8).

The conditions in its Excludes2 note aren't part of R92.0, but may be coded alongside it if the patient has both: mammographic calcification (calculus) found on diagnostic imaging of breast (R92.1).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 600 (Non-Malignant Breast Disorders with CC/MCC, relative weight 0.9975) and DRG 601 (Non-Malignant Breast Disorders without CC/MCC, relative weight 0.6017), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 793.81 (Mammographic microcalcification).