ICD-10 Code C50.029 – Malignant neoplasm of nipple and areola, unspecified male breast (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C50.029 – Malignant neoplasm of nipple and areola, unspecified male breast
What it is
This code identifies a malignant tumor in the nipple and areola of the male breast when the record does not specify laterality or more detailed site information. Use it for documented cancer in that breast region.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include a nipple or areolar mass, ulceration, discharge, or skin change, but the diagnosis should be supported by pathology or clear clinician documentation.
When to use this code
Use C50.029 when the provider documents a malignant neoplasm of the nipple and areola in a male breast and does not identify the side. It also fits when the site is confirmed but the chart lacks further detail. If laterality or a different breast site is documented, you should code that instead.
Do not use for
Do not use this code for benign breast lesions, inflammatory conditions, or unspecified breast cancer without nipple or areola involvement. Check documentation if the tumor is in another male breast location.
Coding tip
Verify both the anatomic site and laterality in the pathology, operative, or oncology note before assigning this unspecified code.