Melanocytic nevi of right upper eyelid, including canthus

This code identifies a benign pigmented lesion, specifically a melanocytic nevus, located on the right upper eyelid, including the canthal region. These are common, non-cancerous skin growths composed of nevus cells, which are a type of melanocyte.

Apply this code when documentation clearly indicates a diagnosis of a melanocytic nevus situated on the patient's right upper eyelid or its associated canthus. Supporting documentation would include physician notes detailing the lesion's location, appearance, and a definitive diagnosis of melanocytic nevus.

• Ensure laterality is precisely documented and matches the code (right upper eyelid).
• Distinguish from malignant melanoma (C43.-) or other benign eyelid lesions (e.g., D23.111 for other benign neoplasms of the right upper eyelid).
• Confirm the lesion is specifically a melanocytic nevus; other types of nevi or benign lesions may require different codes.