ICD-10 Code C44.1092 – Unspecified malignant neoplasm of skin of left lower eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.1092 – Unspecified 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, when the exact histology is not specified. Use it for a confirmed skin cancer site on the eyelid, but not when a more specific diagnosis is documented.
Clinical signs
Clinical features vary; refer to documentation. Commonly, eyelid skin cancers may appear as a persistent lesion, ulceration, bleeding, crusting, or a nonhealing area on the lower lid or canthus.
When to use this code
Use this code when the provider documents a malignant neoplasm of the skin of the left lower eyelid, including the canthus, without naming the specific cancer type. It is appropriate after biopsy, pathology, or specialist assessment confirms malignancy at this site. If the record identifies a more specific skin cancer, code that diagnosis instead.
Do not use for
Do not use this code for benign eyelid lesions, inflammatory conditions, or unspecified masses without confirmed malignancy. Check documentation if the site is the upper eyelid, a different eye structure, or a different side.
Coding tip
Verify both laterality and anatomic site in the pathology or operative note before assigning this code.