Malignant neoplasm of unspecified site of right male breast

This code signifies a cancerous tumor originating in the right breast tissue of a male patient, where the specific anatomical location within the breast is not documented. It represents an invasive malignancy requiring further diagnostic workup and treatment.

Apply this code when documentation confirms a primary malignant neoplasm of the right male breast, but the medical record does not specify a more precise anatomical site (e.g., central portion, upper-inner quadrant). This code is appropriate when the pathology report confirms malignancy but lacks detailed localization within the breast.

• Always strive for a more specific anatomical site code (C50.021-C50.621) if documented.
• Ensure the patient's sex is clearly documented as male to support the "male breast" specificity.
• This code should be sequenced as the primary diagnosis when the breast malignancy is the reason for the encounter.