ICD-10 Code H16.439 – Localized vascularization of cornea, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.439 – Localized vascularization of cornea, unspecified eye
What it is
This code identifies abnormal new blood vessel growth limited to the cornea in an unspecified eye. It signals a corneal finding rather than a full diagnosis of the underlying cause.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include visible corneal vessels on examination, often with corneal opacity or irritation noted by the eye provider.
When to use this code
Use H16.439 when the record documents localized corneal vascularization and the affected eye is not specified. It fits ophthalmology notes describing neovascularization confined to the cornea. If the provider identifies a cause or a different corneal disorder, code that documented condition as well.
Do not use for
Do not use this code for vascularization elsewhere in the eye or for generalized corneal disease without documented vascular growth. Check documentation if the eye laterality or underlying cause is stated.
Coding tip
Confirm whether the note specifies right, left, or unspecified eye before assigning H16.439.