ICD-10 Code C69.92 – Malignant neoplasm of unspecified site of left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C69.92 – Malignant neoplasm of unspecified site of left eye
What it is
This code identifies a malignant tumor in the left eye when the exact intraocular site is not documented. It tells you the neoplasm is cancerous, but the record does not specify the involved eye structure.
Clinical signs
Clinical features vary; refer to documentation. Eye malignancies may present with visual changes, a visible mass, pain, or abnormal findings on ophthalmic exam, but the specific signs depend on tumor type and location.
When to use this code
Use this code when the provider documents a malignant neoplasm of the left eye and does not name the precise site, such as retina, choroid, or conjunctiva. It is appropriate when the chart only supports an unspecified left-eye location. Check documentation if later notes identify a more exact site.
Do not use for
Do not use this code if the lesion is benign, in situ, or clearly located in another eye structure with its own code. Also avoid it when the documentation specifies a different laterality or the right eye.
Coding tip
Code the most specific left-eye site available; if the site is unclear, use C69.92 only when the provider documentation supports malignancy.