ICD-10 Code H35.059 – Retinal neovascularization, unspecified, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H35.059 – Retinal neovascularization, unspecified, unspecified eye
What it is
This code identifies abnormal new blood vessel growth on the retina when the eye laterality is not specified. It is used for documentation that names retinal neovascularization but does not identify right, left, or both eyes.
Clinical signs
Clinical features vary; refer to documentation. Findings may include retinal new vessels seen on exam or imaging, often with associated retinal ischemia or hemorrhage.
When to use this code
Use H35.059 when the provider documents retinal neovascularization and does not specify which eye is affected. It also fits when the record confirms the condition but laterality is unavailable or unclear. You should code from the documented diagnosis, not from presumed laterality.
Do not use for
Do not use this code if the record specifies right, left, or bilateral eye involvement; choose the more specific code instead. Do not use it for other retinal vascular disorders without documented neovascularization.
Coding tip
If laterality is missing, query the provider before defaulting to an unspecified eye code.