Melanocytic nevi of lip

This code describes a benign, pigmented lesion of the lip, commonly known as a mole. These nevi are composed of melanocytes and are typically flat or slightly raised, varying in color from light brown to black. They are generally asymptomatic but may be a cosmetic concern or, rarely, undergo malignant transformation.

Use this code when documentation specifies a melanocytic nevus located on any part of the lip. This diagnosis is typically made clinically, but may be confirmed by biopsy. It is appropriate for initial diagnosis, follow-up, or removal of such a lesion.

• Ensure the documentation explicitly states "lip" as the anatomical site; do not assume based on proximity.
• Distinguish from other benign lip lesions like vascular malformations or epidermal cysts.
• If the nevus is excised, code the appropriate CPT procedure code in addition to this diagnosis.