ICD-10 Code C44.1992 – Other specified malignant neoplasm of skin of left lower eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.1992 – Other specified malignant neoplasm of skin of left lower eyelid, including canthus
What it is
This code identifies a malignant skin tumor on the left lower eyelid, including the canthus, that does not fit a more specific skin cancer category. Use it when the record names a malignant neoplasm of this exact site and type is otherwise unspecified.
Clinical signs
Clinical features vary; refer to documentation. Eyelid skin cancers may present as a persistent lesion, ulceration, crusting, bleeding, or a nonhealing mass on the lower lid or canthus.
When to use this code
Use this code when the provider documents a malignant neoplasm of the skin on the left lower eyelid, including the canthus, and the pathology or note does not support a more specific skin cancer code. It is appropriate for confirmed malignancy at this exact anatomic site. Check documentation if the lesion is described as benign, uncertain, or metastatic from another primary site.
Do not use for
Do not use it for benign eyelid lesions, premalignant changes, or malignant tumors arising from non-skin structures of the eyelid. Do not assign it when the record identifies a different eyelid side or a more specific skin cancer diagnosis.
Coding tip
Verify both laterality and the exact eyelid location, because canthus involvement is included in this code.