ICD-10 Code H46.8 – Other optic neuritis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H46.8 – Other optic neuritis
What it is
H46.8 identifies optic neuritis that does not fit a more specific ICD-10 category. It refers to inflammation of the optic nerve causing visual disturbance, with the exact cause or subtype not otherwise specified.
Clinical signs
Common findings include decreased vision, pain with eye movement, reduced color perception, and an abnormal pupillary response. Clinical features vary; refer to documentation.
When to use this code
Use H46.8 when the record documents optic neuritis but does not name a more specific type, such as retrobulbar or demyelinating optic neuritis. This code is appropriate when the provider identifies “other” optic neuritis or when the subtype is not clearly classified. Check documentation if laterality or a more specific diagnosis is available.
Do not use for
Do not use this code for optic neuritis with a more specific documented type or for noninflammatory optic nerve disorders. If the chart does not support optic neuritis, check documentation before assigning H46.8.
Coding tip
Assign the most specific optic neuritis code available; use H46.8 only when the provider’s documentation supports a nonspecific “other” diagnosis.