ICD-10-CM > N00-N99 > N60-N65 > N64 > N64.5 N64.5 Other signs and symptoms in breast Non-Billable/Non-Specific Type 2 Excludes abnormal findings on diagnostic imaging of breast (R92.-) Codes N64.51Induration of breastN64.52Nipple dischargeN64.53Retraction of nippleN64.59Other signs and symptoms in breast