ICD-10 Code C44.1022 – Unspecified malignant neoplasm of skin of right lower eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.1022 – Unspecified malignant neoplasm of skin of right lower eyelid, including canthus
What it is
This code identifies a malignant skin tumor on the right lower eyelid, including the canthus, when the exact histology is not specified. Use it for documented skin cancer of that eyelid area without a more specific subtype.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include a persistent eyelid lesion, ulceration, crusting, bleeding, or a nonhealing growth on the right lower eyelid or canthus.
When to use this code
Use this code when the provider documents a malignant neoplasm of the skin on the right lower eyelid, including the canthus, but does not name the specific cancer type. It also fits when pathology or assessment confirms malignancy and laterality is clearly right. If the record only says “eyelid cancer,” check documentation.
Do not use for
Do not use this code for benign eyelid lesions, premalignant changes, or malignant tumors of other eyelid sites. If the documentation does not confirm a skin primary or right-sided location, check documentation.
Coding tip
Verify both laterality and the phrase “including canthus” before assigning C44.1022.