ICD-10 Code H47.639 – Disorders of Visual Cortex in (Due to) Neoplasm, Unspecified Side of Brain (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H47.639 – Disorders of visual cortex in (due to) neoplasm, unspecified side of brain
What it is
This code identifies a disorder of visual processing caused by a neoplasm affecting the visual cortex, when the side of the brain is not specified. Use it when documentation links the visual cortex problem to a tumor or mass.
Clinical signs
Clinical features vary; refer to documentation. Findings may include visual field loss, impaired visual recognition, or other cortical visual deficits documented by the provider as related to a brain neoplasm.
When to use this code
Use this code when the record clearly states a visual cortex disorder due to neoplasm and does not identify the right or left side. It is appropriate for tumor-related cortical visual impairment documented by the clinician. If the cause or laterality is unclear, check documentation before coding.
Do not use for
Do not use it for visual problems from eye disease, optic nerve disorders, or unspecified vision loss without a documented cortical cause. Do not assume laterality or tumor type if the note does not support it.
Coding tip
Confirm both the neoplasm link and the unspecified side of brain in the documentation before assigning H47.639.