Benign lipomatous neoplasm of skin, subcu of right arm

This code signifies a non-cancerous fatty tumor originating in the skin or the tissue directly beneath it, specifically located on the patient's right arm. These benign growths, known as lipomas, are typically soft, movable, and painless.

Apply this code when documentation clearly identifies a benign lipoma affecting the skin or subcutaneous tissue of the right upper extremity. This diagnosis is often made clinically, but may be confirmed by imaging or biopsy.

• Ensure laterality is explicitly documented as "right arm" to support this specific code.
• Distinguish from malignant fatty tumors (liposarcomas) which would be coded under C49.11.
• Do not use for lipomas of deeper tissues or those not specified as skin/subcutaneous.