Malig neoplasm of upper-inner quadrant of left female breast

This code signifies a primary cancerous tumor located in the upper-inner quadrant of the left breast in a female patient. This specific quadrant refers to the section of the breast closest to the sternum and above the nipple line. The malignancy indicates uncontrolled cell growth with the potential for invasion and metastasis.

This code is appropriate for documenting a newly diagnosed or existing primary malignant neoplasm definitively identified in the upper-inner quadrant of the left female breast. Documentation such as pathology reports, imaging studies (e.g., mammogram, MRI), and physician's notes confirming the specific location and malignancy are necessary to support its use.

• Ensure the laterality (left) and specific quadrant (upper-inner) are clearly documented; avoid using unspecified breast codes if this detail is available.
• Confirm the patient's sex is female, as this code is specific to the female breast.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter, followed by any relevant secondary diagnoses such as metastatic sites or complications.