ICD-10 Code C44.1191 – Basal cell carcinoma of skin of left upper eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.1191 – Basal cell carcinoma of skin of left upper eyelid, including canthus
What it is
This code identifies a basal cell carcinoma located on the skin of the left upper eyelid, including the canthus. Use it when the record specifies this exact site and the lesion is confirmed as basal cell carcinoma.
Clinical signs
Typical findings include a slowly growing eyelid lesion, often pearly, translucent, or ulcerated, with possible bleeding or crusting. Clinical features vary; refer to documentation for the exact appearance and laterality.
When to use this code
Use this code when the provider documents basal cell carcinoma of the left upper eyelid or left canthus. It is appropriate for pathology-confirmed or clearly documented malignant skin lesions at this site. Check documentation if the note only says eyelid cancer without laterality or histology.
Do not use for
Do not use this code for non-melanoma skin lesions that are not basal cell carcinoma, or for tumors on the right eyelid or another facial site. Check documentation if the diagnosis is uncertain.
Coding tip
Confirm both histology and exact side before assigning C44.1191.