ICD-10 Code H16.443 – Deep vascularization of cornea, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.443 – Deep vascularization of cornea, bilateral
What it is
H16.443 identifies abnormal deep blood vessel growth into both corneas. You use it when the corneal stroma is vascularized in both eyes, not when only superficial vessels are present.
Clinical signs
Findings may include visible corneal vessels extending deep into the stroma, reduced corneal clarity, and possible visual disturbance. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record specifically documents deep vascularization of the cornea in both eyes. It is appropriate for ophthalmology notes, exam findings, or problem lists that clearly state bilateral involvement. Check documentation if laterality is unclear.
Do not use for
Do not use it for superficial corneal vascularization or for unilateral disease. If the chart only says “corneal neovascularization” without depth or laterality, check documentation.
Coding tip
Confirm both the depth and bilateral laterality before assigning H16.443.