Malig neoplasm of lower-inner quadrant of right male breast

This code identifies a primary cancerous tumor located in the lower-inner quadrant of the right breast in a male patient. This malignancy originates from the breast tissue itself, rather than being a metastasis from another site. It specifically denotes the anatomical location and the patient's sex.

Use this code when documentation clearly indicates a primary malignant neoplasm diagnosed in the lower-inner quadrant of the right breast in a male patient. This typically follows a biopsy confirming malignancy and imaging studies (e.g., mammogram, ultrasound, MRI) localizing the tumor. Documentation must specify both the laterality (right), the quadrant (lower-inner), and the patient's sex.

• Ensure the documentation explicitly states "male breast" and the specific quadrant.
• Do not use this code for metastatic breast cancer; use a secondary malignancy code with the breast as the site.
• Verify the laterality (right) is clearly documented to avoid incorrect coding.