ICD-10 Code C44.122 – Squamous cell carcinoma of skin of right eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.122 – Squamous cell carcinoma of skin of right eyelid, including canthus
What it is
This code identifies a malignant squamous cell carcinoma arising from the skin of the right eyelid, including the canthus. Use it when documentation specifies the right side and the lesion is on eyelid skin.
Clinical signs
Typical findings include a persistent eyelid lesion, often scaly, crusted, ulcerated, or enlarging. Clinical features vary; refer to documentation for laterality, site, and confirmation of squamous cell carcinoma.
When to use this code
Use this code when the provider documents squamous cell carcinoma of the skin on the right upper or lower eyelid, or the right canthus. It also fits confirmed pathology or specialist assessment naming the exact site. If the record only says eyelid cancer without laterality, check documentation.
Do not use for
Do not use this code for basal cell carcinoma, melanoma, or nonmalignant eyelid lesions. It is also incorrect when the site is unspecified or on the left eyelid.
Coding tip
Always verify laterality and whether the canthus is included in the documented site before assigning C44.122.