ICD-10 Code C44.1122 – Basal cell carcinoma of skin of right lower eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.1122 – Basal cell carcinoma of skin of right lower eyelid, including canthus
What it is
This code identifies basal cell carcinoma arising on the skin of the right lower eyelid, including the canthus. Use it when documentation specifies this exact eyelid location.
Clinical signs
Basal cell carcinoma often appears as a pearly papule, nonhealing lesion, or ulcer with rolled borders. On the eyelid, it may cause local irritation, crusting, or lash loss; clinical features vary; refer to documentation.
When to use this code
Use C44.1122 when the provider documents basal cell carcinoma of the right lower eyelid, with or without canthal involvement. It is appropriate for confirmed malignant skin neoplasm at this exact site, including pathology-supported diagnoses and problem lists tied to that location.
Do not use for
Do not use this code for lesions on the left eyelid, upper eyelid, or unspecified eyelid site. Do not use it for benign eyelid growths, actinic keratosis, or if the documentation does not confirm basal cell carcinoma; check documentation.
Coding tip
Verify laterality and eyelid subsite in the operative note, pathology report, or assessment before assigning the code.