ICD-10 Code H47.641 – Disorders of Visual Cortex in (Due to) Vascular Disorders, Right Side of Brain (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H47.641 – Disorders of visual cortex in (due to) vascular disorders, right side of brain
What it is
This code identifies visual cortex dysfunction caused by a vascular disorder affecting the right side of the brain. It is used when the visual problem is linked to blood vessel disease rather than an eye disorder.
Clinical signs
Clinical features may include visual field loss, visual neglect, or other cortical visual deficits. Findings should support a right hemispheric vascular cause; clinical features vary, so refer to documentation.
When to use this code
Use this code when the provider documents a disorder of the visual cortex due to a vascular condition on the right side of the brain. It fits cases such as stroke-related cortical visual impairment with laterality specified. If the record only states visual loss without a cortical or vascular cause, check documentation.
Do not use for
Do not use this code for primary eye diseases, nonspecific vision complaints, or visual problems without documented cortical involvement. Do not assign it when the vascular side or cause is not specified; check documentation.
Coding tip
Confirm both the cortical location and the vascular etiology in the note before assigning H47.641.