ICD-10 Code D22.12 – Melanocytic nevi of left eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D22.12 – Melanocytic nevi of left eyelid, including canthus
What it is
This code identifies a benign melanocytic nevus on the left eyelid, including the inner or outer canthus. Use it when documentation states a mole or nevus in that specific eyelid location.
Clinical signs
Findings usually include a localized pigmented or skin-colored lesion on the left eyelid. Clinical features vary; refer to documentation for size, color, borders, and whether the canthus is involved.
When to use this code
Use D22.12 when the provider documents a melanocytic nevus of the left eyelid or left canthus. Apply it for confirmed benign lesions, including when the note specifies excision, observation, or routine follow-up of that nevus.
Code it only when the lesion is clearly documented as melanocytic and on the left side. If the record says “eyelid lesion” without histology or laterality, check documentation before assigning this code.
Do not use for
Do not use this code for malignant skin lesions, nonspecific eyelid masses, or nevi on the right eyelid. If the diagnosis is uncertain or another lesion type is documented, choose the more accurate code.
Coding tip
Verify both laterality and the word “melanocytic” in the record before coding D22.12.