Dilatation of the lumen of the mammary ducts without evidence of epithelial atypia.
Dilatation of the mammary duct without atypical cells.
N60.4 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2023 edition of ICD-10-CM N60.4 became effective on October 1, 2022.
This is the American ICD-10-CM version of N60.4 – other international versions of ICD-10 N60.4 may differ.