Malig neoplasm of lower-outer quadrant of left male breast

This code signifies a primary cancerous tumor originating in the lower-outer quadrant of the left breast in a male patient. It indicates the presence of malignant cells within the breast tissue, specifically localized to this region.

This code is appropriate for documenting a confirmed diagnosis of breast cancer in a male patient, where the tumor is specifically identified as arising from the lower-outer quadrant of the left breast. Supporting documentation includes pathology reports confirming malignancy and imaging reports (e.g., mammogram, MRI) detailing the tumor's location.

• Ensure the laterality (left) and specific quadrant (lower-outer) are clearly documented.
• Verify the patient's sex is male, as there are separate codes for female breast malignancies.
• Do not use this code for secondary malignancies or carcinoma in situ; specific codes exist for those conditions.