ICD-10 Code C44.111 – Basal cell carcinoma of skin of unspecified eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.111 – Basal cell carcinoma of skin of unspecified eyelid, including canthus
What it is
C44.111 identifies basal cell carcinoma arising on an unspecified eyelid, including the inner or outer canthus. Use it when the record confirms basal cell carcinoma but does not specify upper or lower eyelid.
Clinical signs
Clinical features vary; refer to documentation. Basal cell carcinoma often appears as a slow-growing eyelid lesion, sometimes pearly, ulcerated, or bleeding, and may be noted with local skin destruction.
When to use this code
Use this code when the provider documents basal cell carcinoma of the eyelid and does not identify the exact lid. It also fits cases where the canthus is involved but laterality or eyelid portion is not specified. If the note gives a more specific eyelid site, code that instead.
Do not use for
Do not use C44.111 for non-basal skin cancers, benign eyelid lesions, or lesions documented on a different skin site. Check documentation if the record only says “skin cancer” without confirming basal cell carcinoma.
Coding tip
Look for wording such as “unspecified eyelid” or “including canthus” and avoid defaulting to a more specific eyelid code without documentation.