ICD-10 Code H34.813 – Central retinal vein occlusion, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H34.813 – Central retinal vein occlusion, bilateral
What it is
H34.813 identifies central retinal vein occlusion affecting both eyes. It means the main vein draining the retina is blocked in each eye, which can reduce vision and cause retinal swelling.
Clinical signs
Typical findings include sudden or gradual vision loss, blurred vision, and retinal hemorrhages on exam. Clinical features vary; refer to documentation, especially for laterality and whether the occlusion is acute or chronic.
When to use this code
Use this code when the provider documents bilateral central retinal vein occlusion, or when both eyes are clearly identified as affected in the record. You should also confirm that the diagnosis is not limited to one eye or to another retinal vascular disorder.
If documentation is incomplete, check the ophthalmology note, imaging report, or assessment. Do not assume bilateral involvement from nonspecific visual complaints alone.
Do not use for
Do not use H34.813 for unilateral central retinal vein occlusion, branch retinal vein occlusion, or retinal artery occlusion. Check documentation if the note only says “retinal vein occlusion” without bilateral confirmation.
Coding tip
Verify both laterality and the exact vessel involved before assigning H34.813.