ICD-10 Code C44.1321 – Sebaceous cell carcinoma of skin of right upper eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.1321 – Sebaceous cell carcinoma of skin of right upper eyelid, including canthus
What it is
This code identifies a malignant sebaceous gland tumor arising in the skin of the right upper eyelid, including the canthus. It is used when the lesion is documented as sebaceous cell carcinoma in that exact location.
Clinical signs
Typical findings include a persistent eyelid nodule, thickening, or a lesion that may mimic a chalazion or blepharitis. Clinical features vary; refer to documentation, especially for biopsy-confirmed diagnosis and exact eyelid site.
When to use this code
Use this code when the provider documents sebaceous cell carcinoma on the right upper eyelid, including the medial or lateral canthus. You should code it from pathology, operative, or specialist documentation that clearly names the site and histology.
If the record only says eyelid cancer, malignant lesion, or unspecified skin cancer, check documentation before assigning this code. Make sure the laterality and upper eyelid location are explicit.
Do not use for
Do not use this code for benign eyelid masses, chalazion, or nonspecific inflammatory eyelid disease. Do not use it when the carcinoma is on another eyelid, another skin site, or the laterality is not documented.
Coding tip
Verify both histology and exact anatomic site, because this code is specific to the right upper eyelid, including canthus.