ICD-10 Code H34.831 – Tributary (branch) retinal vein occlusion, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H34.831 – Tributary (branch) retinal vein occlusion, right eye
What it is
H34.831 identifies a blockage of a branch retinal vein in the right eye. It means venous blood flow from part of the retina is obstructed, which can reduce vision.
Clinical signs
Typical findings include sudden or subacute painless vision loss, blurred vision, or visual field defects in the right eye. Clinical features vary; refer to documentation and ophthalmic exam findings.
When to use this code
Use H34.831 when the provider documents branch retinal vein occlusion involving the right eye. Code it for confirmed diagnoses, including cases described as tributary retinal vein occlusion or BRVO of the right eye.
Use the code only when laterality is documented. If the record does not specify the eye, or if another retinal vascular disorder is the actual diagnosis, check documentation before assigning this code.
Do not use for
Do not use this code for central retinal vein occlusion, left eye disease, or unspecified laterality. Do not assign it when the note only mentions retinal hemorrhage without confirming vein occlusion.
Coding tip
Confirm the diagnosis wording and right-eye laterality in the ophthalmology note before coding.