ICD-10 Code H34.10 – Central retinal artery occlusion, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H34.10 – Central retinal artery occlusion, unspecified eye
What it is
H34.10 identifies an occlusion of the central retinal artery when the affected eye is not specified. It documents retinal ischemia that can cause sudden vision loss and requires prompt clinical attention.
Clinical signs
Typical findings include sudden, painless monocular vision loss and an afferent pupillary defect. Funduscopic features may include retinal whitening or a cherry-red spot; clinical features vary, so refer to documentation.
When to use this code
Use this code when the record states central retinal artery occlusion but does not identify right or left eye. It also fits when laterality is not documented in the assessment, consult note, or discharge summary. Confirm the diagnosis is retinal artery occlusion, not another retinal vascular disorder.
Do not use for
Do not use H34.10 if the chart specifies the right or left eye, or if the condition is a different retinal vessel occlusion. Check documentation when the diagnosis is uncertain or when only transient visual symptoms are recorded.
Coding tip
Always look for laterality in ophthalmology notes before assigning the unspecified-eye code.