ICD-10 Code C69.10 – Malignant neoplasm of unspecified cornea (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C69.10 – Malignant neoplasm of unspecified cornea
What it is
C69.10 identifies a malignant tumor of the cornea when the record does not specify the exact corneal site. Use it for documented primary cancer of the cornea, not for benign or uncertain lesions.
Clinical signs
Clinical features vary; refer to documentation. Commonly noted findings include a corneal mass, opacity, ulceration, or abnormal growth seen on eye examination, with possible vision changes or ocular irritation.
When to use this code
Use this code when the provider documents malignant neoplasm of the cornea and no more specific corneal location is given. It also fits pathology or ophthalmology notes that confirm corneal cancer without further detail. If the chart names a different eye site, choose the more specific code.
Do not use for
Do not use C69.10 for benign corneal lesions, inflammation, trauma, or uncertain masses without a malignant diagnosis. Check documentation if the tumor involves another part of the eye or if the site is specified elsewhere.
Coding tip
Code the documented site exactly as stated, and query for laterality or more precise corneal location when the record supports it.