Malignant neoplasm of nipple and areola, left male breast

This code signifies a primary cancerous tumor originating in the nipple or areola tissue of the left male breast. It specifically identifies the malignant nature and precise anatomical location within the male mammary gland.

Apply this code when documentation confirms a biopsy-proven or clinically diagnosed primary malignancy located in the nipple or areola of the left male breast. This is appropriate for initial diagnosis, active treatment, or follow-up care for this specific cancer.

• Ensure the documentation specifies "male breast" and "left" side, as laterality and gender are crucial for accurate coding.
• Distinguish from benign neoplasms of the nipple/areola and malignancies of other breast quadrants.
• Sequence as the primary diagnosis when the patient is receiving treatment for this specific cancer.