ICD-10-CM 2027
ICD-10 code for breast discharge
From the official ICD-10-CM alphabetic index entry “Discharge (from) › breast (female) (male)”. Page updated September 29, 2026.
About coding breast discharge
The ICD-10-CM code for breast discharge is N64.52 (Nipple discharge).
Within N64.5 (other signs and symptoms in breast), N64.52 is specifically for nipple discharge. Related codes cover Induration of breast (N64.51), retraction of nipple (N64.53) and other signs and symptoms in breast (N64.59).
Don't report N64.52 together with the conditions in its Excludes1 note: abnormal findings in nipple discharge (R89.-).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for N64.52)
- abnormal findings in nipple discharge (R89.-)
Common questions about breast discharge ICD-10 codes
What is the ICD-10 code for breast discharge?
- N64.52 — Nipple discharge.
Is N64.52 billable?
- Yes. N64.52 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can N64.52 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict N64.52 as a principal diagnosis.
Is N64.52 a CC or MCC?
- No. N64.52 is neither a CC nor an MCC under MS-DRG v44.0.