ICD-10 Code C44.191 – Other specified malignant neoplasm of skin of unspecified eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.191 – Other specified malignant neoplasm of skin of unspecified eyelid, including canthus
What it is
This code identifies a malignant skin tumor on the eyelid or canthus when the documentation does not name a more specific skin cancer type. Use it for a documented malignant neoplasm of the eyelid skin that is not otherwise classified.
Clinical signs
Clinical features vary; refer to documentation. Suspicious eyelid lesions may appear as a persistent nodule, ulcer, crusted area, or nonhealing lesion, but the recorded diagnosis should confirm malignancy.
When to use this code
Use C44.191 when the provider documents a malignant skin neoplasm of the unspecified eyelid, including canthus, and no more specific site or histology is stated. It also fits when the lesion is described as malignant but not further classified. Check documentation if the record names a different eyelid subsite.
Do not use for
Do not use this code for benign eyelid lesions, in situ skin lesions, or malignant tumors with a more specific ICD-10 code. If the documentation identifies a different eyelid location, code that site instead.
Coding tip
Verify both the malignancy and the exact eyelid location in the note before assigning C44.191.