ICD-10 Code H47.64 – Disorders of visual cortex in (due to) vascular disorders (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H47.64 – Disorders of visual cortex in (due to) vascular disorders
What it is
This code identifies visual cortex dysfunction caused by a vascular disorder, such as reduced blood flow or stroke-related injury. It refers to impaired visual processing from brain involvement, not a primary eye disease.
Clinical signs
Findings may include visual field loss, cortical blindness, or other visual processing deficits with a neurologic cause. Clinical features vary; refer to documentation and confirm the vascular etiology when present.
When to use this code
Use H47.64 when the record documents a disorder of the visual cortex due to a vascular condition, and the provider links the two. It fits cases where imaging, neurologic assessment, or specialist notes support a vascular brain cause for the visual deficit.
Code it only when the visual cortex involvement is clearly stated. If the documentation describes nonspecific vision loss without a vascular or cortical explanation, Check documentation.
Do not use for
Do not use this code for primary ocular disorders, refractive errors, or unspecified vision loss without cortical involvement. Also avoid it when the vascular cause is not documented.
Coding tip
Look for explicit provider wording connecting the visual deficit to a vascular disorder and the visual cortex before assigning H47.64.