Malig neoplasm of upper-inner quadrant of left male breast

This code signifies a cancerous tumor originating in the upper-inner quadrant of the left breast in a male patient. This specific location refers to the portion of the breast closest to the sternum and superior to the nipple. The malignancy indicates uncontrolled cell growth with the potential to invade surrounding tissues or metastasize.

Use this code when documentation confirms a primary malignant neoplasm located in the upper-inner quadrant of the left male breast. This typically follows biopsy confirmation and imaging studies (e.g., mammogram, MRI) that precisely localize the tumor. Supporting documentation should clearly specify the laterality (left), quadrant (upper-inner), and patient's sex (male).

• Always verify the laterality (left vs. right) and specific quadrant documented by the physician.
• Distinguish this from female breast cancer codes; ensure the documentation explicitly states "male breast."
• Confirm that the neoplasm is primary; if metastatic, a secondary malignancy code would be more appropriate.