Malig neoplasm of upper-inner quadrant of unsp female breast

This code signifies a primary cancerous tumor located in the upper-inner quadrant of a female patient's breast, where the specific breast (left or right) is not documented. It indicates a malignant growth originating in the glandular or ductal tissue of this particular breast region.

Use this code when the medical record clearly states a primary malignant neoplasm in the upper-inner quadrant of the breast, but does not specify if it's the left or right breast. This is often seen in pathology reports or operative notes that identify the quadrant but omit laterality.

• Ensure documentation explicitly states "upper-inner quadrant" and "unspecified breast."
• If laterality (left or right) is documented, use the more specific code (C50.211 or C50.212).
• This code is for primary malignancy; use secondary codes for metastatic disease.