Malignant inflammatory neoplasm of right breast

This code signifies a highly aggressive form of breast cancer characterized by rapid onset, diffuse erythema, edema, and warmth of the skin, often without a palpable mass. The term "inflammatory" refers to the clinical presentation resembling an infection, caused by cancer cells blocking lymphatic drainage in the skin. This specific code indicates the malignancy is located in the right breast.

Apply this code when documentation clearly states a diagnosis of inflammatory carcinoma of the right breast. This diagnosis is typically made clinically, often confirmed by biopsy showing dermal lymphatic invasion by malignant cells. Look for terms like "inflammatory breast cancer," "IBC," or "carcinoma erysipelatoides" affecting the right breast.

• Ensure the documentation explicitly states "inflammatory" to differentiate from other breast cancer types.
• Verify the laterality (right breast) is clearly documented; separate codes exist for the left breast and unspecified breast.
• This code should be sequenced as the primary diagnosis when it is the reason for the encounter.