Fat necrosis of breast

This code signifies a benign inflammatory condition of the breast characterized by the death of adipose tissue, often presenting as a firm, palpable mass. It typically results from trauma, surgery, or radiation therapy, leading to an area of hardened, necrotic fat.

Apply this code when documentation clearly indicates a diagnosis of fat necrosis of the breast, often following a biopsy or imaging study confirming the presence of necrotic fat. It is appropriate for patients presenting with a breast lump that is ultimately diagnosed as fat necrosis, differentiating it from malignant processes.

• Ensure documentation specifies "fat necrosis" and not just a generic "breast mass" or "lump."
• Do not confuse with other benign breast conditions like fibroadenoma or cysts; definitive diagnostic statements are crucial.
• Consider sequencing this code as a primary diagnosis if it is the reason for the encounter, or as a secondary diagnosis if it's an incidental finding or complication of another condition.