ICD-10 Code C44.13 – Sebaceous cell carcinoma of skin of eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.13 – Sebaceous cell carcinoma of skin of eyelid, including canthus
What it is
C44.13 identifies a malignant sebaceous gland tumor arising in the eyelid skin, including the inner or outer canthus. Use it when the record specifically documents sebaceous cell carcinoma in this location.
Clinical signs
Clinical features vary; refer to documentation. Commonly, this tumor presents as a persistent eyelid nodule, thickening, or nonhealing lesion that may mimic a benign chalazion or chronic blepharitis.
When to use this code
Use C44.13 when the provider documents sebaceous cell carcinoma of the eyelid or canthus and the site is limited to the skin of that area. It is appropriate for confirmed diagnosis, biopsy-proven disease, or problem-list entries that clearly state this cancer. If the note only says “eyelid cancer,” check documentation for the histology and exact site.
Do not use for
Do not use this code for benign eyelid lesions, nonspecific skin cancers, or tumors in other periocular structures. If the chart does not specify sebaceous histology or eyelid/canthus location, check documentation.
Coding tip
Capture both the sebaceous histology and the eyelid/canthus site before assigning C44.13.