Malig neoplasm of lower-inner quadrant of unsp male breast

This code identifies a cancerous tumor originating in the lower-inner quadrant of the breast tissue in a male patient, where the specific side (left or right) is not documented. It signifies a primary malignancy, not a metastatic lesion from another site.

Use this code when documentation confirms a primary malignant neoplasm located in the lower-inner quadrant of a male breast, and the laterality (left or right) is unspecified. This typically applies to pathology reports or operative notes that confirm the diagnosis and location but omit the specific side.

• Ensure the documentation explicitly states "male breast" and "lower-inner quadrant."
• Do not use this code if the laterality (left or right) is specified; instead, use the appropriate C50.31- code.
• Confirm this is a primary malignancy; secondary or metastatic breast cancers are coded differently.