ICD-10 Code H34.819 – Central retinal vein occlusion, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H34.819 – Central retinal vein occlusion, unspecified eye
What it is
H34.819 identifies a central retinal vein occlusion when the affected eye is not specified in the record. It means the main vein draining the retina is blocked, causing impaired retinal blood flow.
Clinical signs
Typical findings include sudden, painless vision loss or blurred vision, retinal hemorrhages, venous dilation, and optic disc swelling. Clinical features vary; refer to documentation.
When to use this code
Use H34.819 when the provider documents central retinal vein occlusion but does not state whether the right or left eye is involved. It is also appropriate when the note confirms CRVO and eye laterality cannot be determined. Check documentation if the record is unclear.
Do not use for
Do not use this code for branch retinal vein occlusion or retinal vein thrombosis in a different retinal vessel. Do not assign it when laterality is documented and a more specific code is available.
Coding tip
Always review the ophthalmology note for laterality before selecting the unspecified-eye code.