ICD-10 Code D22.121 – Melanocytic nevi of left upper eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D22.121 – Melanocytic nevi of left upper eyelid, including canthus
What it is
This code identifies a benign melanocytic nevus on the left upper eyelid, including the canthus. It is used when the lesion is documented in that exact eyelid location.
Clinical signs
Typical findings include a stable pigmented or flesh-colored eyelid lesion with well-defined borders. Clinical features vary; refer to documentation for size, color, and whether the canthus is involved.
When to use this code
Use this code when the provider documents a melanocytic nevus specifically on the left upper eyelid or left upper eyelid canthus. It fits office, ophthalmology, or dermatology notes describing a benign nevus at that site.
If the record only says “eyelid nevus” without laterality or exact location, check documentation before assigning D22.121. Code the documented site only when the left upper eyelid is clearly identified.
Do not use for
Do not use this code for malignant melanoma, other pigmented lesions, or nevi on a different eyelid or the right side. Check documentation if the lesion type is uncertain.
Coding tip
Verify both laterality and eyelid location, because D22.121 is specific to the left upper eyelid, including canthus.