ICD-10 Code D23.121 – Other benign neoplasm of skin of left upper eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D23.121 – Other benign neoplasm of skin of left upper eyelid, including canthus
What it is
This code identifies a benign skin tumor located on the left upper eyelid, including the canthus. Use it when documentation describes a noncancerous neoplasm of that specific eyelid skin area.
Clinical signs
Findings may include a localized eyelid lump, papule, or nodule with slow growth and no signs of invasion. Clinical features vary; refer to documentation.
When to use this code
Use D23.121 when the provider documents a benign neoplasm of the skin on the left upper eyelid or left canthus. It fits cases confirmed by exam, biopsy, or specialist assessment when the lesion is nonmalignant. If the record only says “eyelid lesion,” check documentation.
Do not use for
Do not use this code for malignant eyelid tumors, inflammatory lesions, or unspecified eyelid masses. Check documentation if the lesion is cystic, infectious, or not clearly a benign skin neoplasm.
Coding tip
Verify laterality and the exact eyelid site, because a right-sided or unspecified lesion requires a different code.