ICD-10 Code C44.11 – Basal cell carcinoma of skin of eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.11 – Basal cell carcinoma of skin of eyelid, including canthus
What it is
C44.11 identifies basal cell carcinoma arising on the eyelid skin, including the inner or outer canthus. Use it when documentation specifies this malignant skin tumor at that location.
Clinical signs
Typical findings include a slowly enlarging pearly papule or nodule, surface telangiectasia, ulceration, or a nonhealing lesion on the eyelid. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents basal cell carcinoma of the eyelid or canthus, with or without laterality. It also fits pathology-confirmed eyelid skin cancer when the site is clearly stated. If the record only says “skin cancer” or the eyelid site is unclear, check documentation.
Do not use for
Do not use C44.11 for non-basal cell skin cancers, benign eyelid lesions, or cancers of the conjunctiva or other eye structures. Check documentation if the lesion site is not clearly the eyelid skin.
Coding tip
Confirm both the histology and the exact eyelid location before assigning C44.11.