All ICD10 Codes
H46Not billable, use a more specific code below

Optic neuritis

In Disorders of optic nerve and visual pathways (H46-H47), chapter 7: Diseases of the Eye and Adnexa

12 billable codes under H46: 10 are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.

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Instructional notes

Excludes2: not included here, code separately if applicable

  • ischemic optic neuropathy (H47.01-)
  • neuromyelitis optica [Devic] (G36.0)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers coding glaucoma by type, eye, and stage, including bilateral cases and stage changes, and coding blindness or low vision when the impairment category is undocumented.

Read Section I.C.7 (page 48)

All codes under H46

H46 can't be used on a claim. Pick a billable code below; grey headings group them.

H46 MS-DRG

As the principal diagnosis, all 12 billable codes under H46 group to MS-DRG 123 (v44.0).

Other codes that refer to H46

Notes on these codes point to H46.

  • G36.0 Excludes2: optic neuritis NOS (H46)
  • G52 Excludes2: disorders of optic [2nd] nerve (H46, H47.0)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Optic Nerve Disorders

The 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.

Read more about optic nerve disorders on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.