Melanocytic nevi of left lower eyelid, including canthus

This code identifies a benign proliferation of melanocytes, commonly known as a mole or nevus, specifically located on the lower eyelid of the left eye, extending to or including the canthus. These lesions are typically pigmented and can vary in size and appearance.

Use this code when documentation clearly indicates a melanocytic nevus affecting the left lower eyelid, including the inner or outer corner (canthus) of the eye. This diagnosis is often made during a dermatological or ophthalmological examination. Supporting documentation would include physician notes detailing the lesion's location, benign nature, and laterality.

• Ensure laterality is precisely documented (left lower eyelid).
• Distinguish from malignant melanoma of the eyelid (C43.122) or other benign eyelid lesions.
• Confirm the lesion is indeed a melanocytic nevus and not another type of benign tumor.