ICD-10 Code H34.212 – Partial retinal artery occlusion, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H34.212 – Partial retinal artery occlusion, left eye
What it is
This code identifies a partial blockage of the retinal artery in the left eye. It means blood flow to part of the retina is reduced, which can cause sudden visual disturbance.
Clinical signs
Findings may include sudden painless vision loss, blurred vision, or a partial visual field defect in the left eye. Clinical features vary; refer to documentation.
When to use this code
Use H34.212 when the provider documents partial retinal artery occlusion specifically in the left eye. It is appropriate for confirmed diagnoses, ophthalmology assessments, or discharge summaries that identify the affected eye. Check documentation if laterality is unclear.
Do not use for
Do not use this code for retinal vein occlusion, complete retinal artery occlusion, or unspecified eye laterality. If the record only says retinal vascular occlusion, check documentation.
Coding tip
Always confirm the left eye and the word partial are documented before assigning H34.212.