H46
Non-billableOptic neuritis
H46 is the ICD-10-CM code for Optic neuritis. It is a non-billable category code — use a more specific child code such as H46.0 for billing.
- Status
- Header (non-billable)
- Chapter
- H00-H59
- Subcodes
- 6
- Edition
- FY2026
H00-H59 Diseases of the eye and adnexa
What this means — in plain language
MedlinePlus · NIHThe optic nerve is a bundle of more than 1 million nerve fibers that carry visual messages. You have one connecting the back of each eye (your retina ) to your brain. Damage to an optic nerve can cause vision loss . The type of vision loss and how severe it is depends on where the damage occurs. It may affect one or both eyes. There are many different types of optic nerve disorders, including: Glaucoma is a group of…
Read more about Optic Nerve Disorders at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Excludes2 — not included here
Conditions mapped to this code
MedlinePlus · NIHPlain-language health-topic references grounded in MedlinePlus (NIH/NLM).
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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