Malignant neoplasm of breast (female), unspecified

This code signifies a malignant tumor originating in the breast tissue of a female patient, where the specific location or type of malignancy within the breast is not documented. It indicates a confirmed diagnosis of breast cancer without further anatomical or histological detail.

Use this code when the medical record clearly states a diagnosis of breast cancer in a female, but lacks specificity regarding the quadrant, central portion, or overlapping sites. This code is appropriate when the physician's documentation only provides "malignant neoplasm of breast" or "breast cancer" without additional detail.

• Avoid using this code if more specific anatomical sites (e.g., upper-outer quadrant, central portion) are documented.
• Always query the provider for greater specificity if possible, as more precise codes exist for various breast locations.
• This code should be a last resort when no further information about the primary site of the breast malignancy can be obtained.