ICD-10 Code C44.199 – Other specified malignant neoplasm of skin of left eyelid, including canthus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C44.199 – Other specified malignant neoplasm of skin of left eyelid, including canthus
What it is
C44.199 identifies a malignant skin tumor on the left eyelid, including the canthus, when the record does not specify a more exact skin cancer type. Use it for documented malignancy limited to that site.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart may describe a suspicious eyelid lesion, nonhealing growth, ulceration, bleeding, or a biopsy-confirmed malignant skin neoplasm on the left eyelid or canthus.
When to use this code
Use this code when the provider documents a malignant neoplasm of the skin of the left eyelid, including the canthus, and does not name a more specific skin cancer category. It may also fit pathology-confirmed cancer recorded at that exact site. Check documentation for laterality and whether the lesion is truly cutaneous.
Do not use for
Do not use it for benign eyelid lesions, uncertain masses, or cancers arising from the eyelid margin structures rather than skin. If the site, laterality, or histology is unclear, check documentation.
Coding tip
Verify that the record says left eyelid or left canthus skin and that no more specific malignant skin code applies before assigning C44.199.