ICD-10 Code H34.0 – Transient retinal artery occlusion (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H34.0 – Transient retinal artery occlusion
What it is
H34.0 identifies a temporary blockage of blood flow in a retinal artery. It refers to an acute, vision-threatening vascular event affecting the eye.
Clinical signs
Clinical features may include sudden, painless visual loss or brief monocular vision disturbance. Findings can be transient; refer to documentation for the exact ophthalmic exam results.
When to use this code
Use H34.0 when the record clearly documents transient retinal artery occlusion or a temporary retinal arterial blockage. Apply it for eye-related vascular episodes affecting retinal perfusion, not for general vision complaints without confirmation. Check documentation if the note only says “amaurosis” or “vision loss.”
Do not use for
Do not use this code for retinal vein occlusion, persistent central retinal artery occlusion, or nonspecific blurred vision. If the diagnosis is uncertain, check documentation.
Coding tip
Code H34.0 only when the provider documents a retinal artery occlusion that is transient, not merely suspected.