ICD-10 Code H16.431 – Localized vascularization of cornea, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.431 – Localized vascularization of cornea, right eye
What it is
This code identifies abnormal blood vessel growth limited to the cornea of the right eye. It is used when the record specifically documents localized corneal vascularization on that side.
Clinical signs
Typical findings include visible corneal vessels extending into an area of the cornea and possible associated corneal opacity or irritation. Clinical features vary; refer to documentation.
When to use this code
Use H16.431 when the ophthalmology note documents localized vascularization of the cornea in the right eye. It may also fit when the provider describes corneal neovascularization or ingrowth of vessels limited to that eye. Check documentation if laterality is unclear or if the finding is bilateral.
Do not use for
Do not use this code for corneal vascularization in the left eye or both eyes. Do not assign it if the chart only mentions a nonspecific corneal disorder without vascularization.
Coding tip
Confirm laterality in the assessment or exam note before selecting H16.431.