H46 – Optic neuritis
ICD-10-CM 2027 diagnosis code · Disorders of optic nerve and visual pathways
ICD-10-CM code
H46
- Code
H46(claims format:H46)- Description
- Optic neuritis
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 7. Diseases of the eye and adnexa (H00-H59)
- Block
- H46-H47 Disorders of optic nerve and visual pathways
Billable codes under H46
H46 is a header code and cannot be used on claims. Choose the most specific code:
- H46.0 – Optic papillitisHeader (more codes below)
- H46.1 – Retrobulbar neuritisHeader (more codes below)
- H46.2 – Nutritional optic neuropathyBillable
- H46.3 – Toxic optic neuropathyBillable
- H46.8 – Other optic neuritisBillable
- H46.9 – Unspecified optic neuritisBillable
Notes for H46
Frequently asked questions
What is ICD-10 code H46?
H46 is the ICD-10-CM code for optic neuritis, in the block H46-H47 (Disorders of optic nerve and visual pathways).
Is H46 a billable code?
No. H46 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.