ICD-10-CM 2027
ICD-10 code for Microcalcifications
From the official ICD-10-CM alphabetic index entry “Microcalcifications, breast”. Page updated September 29, 2026.
About coding Microcalcifications
The ICD-10-CM code for Microcalcifications is R92.0 (Mammographic microcalcification found on diagnostic imaging of breast).
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.
Common questions about Microcalcifications ICD-10 codes
What is the ICD-10 code for Microcalcifications?
- R92.0 — Mammographic microcalcification found on diagnostic imaging of breast.
Is R92.0 billable?
- Yes. R92.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R92.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R92.0 as a principal diagnosis.
Is R92.0 a CC or MCC?
- No. R92.0 is neither a CC nor an MCC under MS-DRG v44.0.