ICD-10 Code H11.412 – Vascular abnormalities of conjunctiva, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H11.412 – Vascular abnormalities of conjunctiva, left eye
What it is
This code identifies an abnormal vascular change affecting the conjunctiva of the left eye. Use it when documentation describes a vascular lesion, malformation, or other blood-vessel abnormality limited to that eye.
Clinical signs
Findings may include visible conjunctival vessel enlargement, localized redness, or a vascular-appearing lesion on exam. Clinical features vary; refer to documentation.
When to use this code
Use H11.412 when the provider documents a vascular abnormality of the conjunctiva in the left eye and does not assign a more specific diagnosis. It is appropriate for charted conjunctival vascular lesions, malformations, or similar abnormalities confined to the left side. If the record is unclear, check documentation.
Do not use for
Do not use this code for generalized conjunctivitis, trauma, or vascular findings in the right eye or both eyes. Do not use it when the abnormality is documented elsewhere in the eye.
Coding tip
Confirm laterality and the exact conjunctival location before assigning H11.412.