ICD-10 Code H34.832 – Tributary (branch) retinal vein occlusion, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H34.832 – Tributary (branch) retinal vein occlusion, left eye
What it is
H34.832 identifies a branch retinal vein occlusion in the left eye. It means a retinal vein branch is blocked, reducing venous drainage and affecting part of the retina.
Clinical signs
Typical findings include sudden painless vision loss or blurred vision in one portion of the visual field. Eye examination may show retinal hemorrhages, venous dilation, and macular edema; clinical features vary, refer to documentation.
When to use this code
Use this code when the provider documents tributary or branch retinal vein occlusion specifically in the left eye. It also fits encounters focused on follow-up, evaluation, or monitoring of a confirmed left-eye BRVO. If the laterality is not documented, check documentation.
Do not use for
Do not use it for central retinal vein occlusion, right eye disease, or unspecified eye involvement. If the note describes retinal artery occlusion or another retinal vascular disorder, choose the documented condition instead.
Coding tip
Confirm both the branch-retinal-vein diagnosis and left-eye laterality in the provider note before assigning H34.832.