ICD-10 Code C50.52 – Malignant neoplasm of lower-outer quadrant of breast, male (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C50.52 – Malignant neoplasm of lower-outer quadrant of breast, male
What it is
C50.52 identifies a malignant tumor arising in the lower-outer quadrant of the male breast. Use it when the record specifies that exact breast location and confirms cancer.
Clinical signs
Typical findings include a palpable breast mass, local tissue distortion, nipple changes, or imaging and biopsy evidence of malignancy. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents primary breast cancer in the lower-outer quadrant of a male breast. It is appropriate after pathology, imaging, or operative notes confirm the site and malignant nature. If the quadrant is not stated, check documentation.
Do not use for
Do not use it for benign breast lesions, unspecified breast cancer sites, or tumors in a different quadrant. Check documentation if the note describes metastatic disease rather than a primary breast malignancy.
Coding tip
Code the documented quadrant exactly; if laterality or site detail is missing, query before assigning C50.52.