ICD-10 Code H34.232 – Retinal artery branch occlusion, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H34.232 – Retinal artery branch occlusion, left eye
What it is
This code identifies a blockage in one branch of the retinal artery in the left eye. It indicates reduced blood flow to part of the retina, which can cause sudden visual disturbance.
Clinical signs
Typical findings include sudden, painless vision loss or a visual field defect in the left eye. Clinical features vary; refer to documentation, and confirm the affected eye and branch involvement when recorded.
When to use this code
Use H34.232 when the record clearly documents a branch retinal artery occlusion limited to the left eye. It is appropriate for confirmed diagnoses from ophthalmology, emergency, or inpatient evaluations. Code it only when laterality and branch location are specified.
Do not use for
Do not use this code for central retinal artery occlusion, retinal vein occlusion, or unspecified retinal vascular disorders. Check documentation if the note does not clearly identify the left eye or branch artery.
Coding tip
Verify laterality and whether the occlusion is branch, central, or unspecified before assigning H34.232.