Malig neoplasm of lower-outer quadrant of unsp male breast

This code signifies a cancerous tumor located in the lower-outer quadrant of a male patient's breast, where the specific side (left or right) is not documented. It indicates a primary malignancy, meaning the cancer originated in the breast tissue itself.

Use this code when documentation confirms a primary malignant neoplasm in the lower-outer quadrant of a male breast, and the medical record does not specify whether it is the left or right breast. This is appropriate when the physician's notes, pathology report, or imaging studies clearly identify the tumor's location within this specific quadrant but omit laterality.

• Always strive for laterality (left or right) if documented; only use this unspecified code when laterality is truly unknown.
• Do not use this code for secondary malignancies or carcinoma in situ; specific codes exist for those conditions.
• Sequence this code as the primary diagnosis when the breast cancer is the reason for the encounter, followed by codes for any associated symptoms or complications.