ICD-10 Code C50.022 – Malignant neoplasm of nipple and areola, left male breast (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C50.022 – Malignant neoplasm of nipple and areola, left male breast
What it is
This code identifies a malignant tumor arising in the nipple and areola of the left breast in a male patient. Use it when documentation specifies this exact anatomic site and laterality.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include a breast or nipple mass, nipple changes, ulceration, or discharge, but the diagnosis should be supported by clinical assessment and pathology when available.
When to use this code
Use C50.022 when the provider documents primary cancer in the left nipple and areola of the male breast. It fits pathology-confirmed malignancy, or a documented working diagnosis when the site is clearly stated. If the record only says “left breast cancer,” code the more specific site only when confirmed.
Do not use for
Do not use this code for benign breast lesions, inflammatory conditions, or cancers in another breast quadrant or the chest wall. Check documentation if the laterality or exact site is not specified.
Coding tip
Verify both sex and laterality, and code the most specific breast subsite documented.