ICD-10 Code H47.649 – Disorders of Visual Cortex in (Due to) Vascular Disorders, Unspecified Side of Brain (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H47.649 – Disorders of visual cortex in (due to) vascular disorders, unspecified side of brain
What it is
This code identifies a disorder of the visual cortex caused by a vascular condition, when the affected brain side is not specified. It points to cortical visual dysfunction linked to blood vessel disease rather than an eye problem.
Clinical signs
Clinical features vary; refer to documentation. Findings may include visual field loss, impaired visual recognition, or other cortical visual deficits after a stroke or similar vascular event.
When to use this code
Use H47.649 when the provider documents a visual cortex disorder due to vascular disease and does not identify the right or left side. It is appropriate when the record supports a brain-based visual disturbance, such as after cerebrovascular injury. Code the vascular cause separately when documented.
Do not use for
Do not use this code for primary eye disorders, nonspecific vision loss, or visual symptoms without documented cortical involvement. Check documentation if the vascular cause or brain side is unclear.
Coding tip
Confirm that the note links the visual deficit to vascular disease and that “unspecified side” is intentional before assigning H47.649.