ICD-10 Code H34.239 – Retinal artery branch occlusion, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H34.239 – Retinal artery branch occlusion, unspecified eye
What it is
This code identifies a blockage in one branch of the retinal artery in an unspecified eye. It indicates localized retinal ischemia affecting part of the retina.
Clinical signs
Typical findings include sudden, painless vision loss or a visual field defect in the affected eye. Funduscopic findings may show retinal whitening or a branch distribution pattern; clinical features vary, refer to documentation.
When to use this code
Use this code when the provider documents branch retinal artery occlusion but does not specify left or right eye. It is also appropriate when the record confirms retinal artery branch occlusion and laterality is unavailable or unclear. Check documentation if the diagnosis is uncertain.
Do not use for
Do not use it for central retinal artery occlusion, retinal vein occlusion, or nonvascular causes of vision loss. If the eye is specified, choose the laterality-specific code instead.
Coding tip
Always verify laterality and whether the occlusion is arterial, because those details change the ICD-10-CM code.