ICD-10 Code C50.32 – Malignant neoplasm of lower-inner quadrant of breast, male (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C50.32 – Malignant neoplasm of lower-inner quadrant of breast, male
What it is
C50.32 identifies a malignant tumor in the lower-inner quadrant of the male breast. Use it when the record specifies this exact breast location and confirms cancer.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart may note a palpable breast mass, nipple changes, skin retraction, or imaging and biopsy findings confirming malignancy.
When to use this code
Use this code when the provider documents primary breast cancer in the lower-inner quadrant of the male breast. It applies to confirmed malignancy, whether newly diagnosed or an established active condition. If the record only says “breast cancer” without location, check documentation.
Do not use for
Do not use this code for benign breast disease, breast pain, or unspecified breast malignancy. Check documentation if the site is different, such as another breast quadrant or the nipple.
Coding tip
Verify both sex and exact tumor location in the operative note, pathology report, or assessment before assigning C50.32.