NPI Atlas

H46.9 – Unspecified optic neuritis

ICD-10-CM 2027 diagnosis code · Disorders of optic nerve and visual pathways

Billable code

ICD-10-CM code H46.9

Code: H46.9 (claims format: H469)
Description: Unspecified optic neuritis
Billable: Yes – valid for HIPAA-covered transactions
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
Parent codes: H46

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

H46 – Optic neuritis

Excludes2 (not included here):

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

Index terms for H46.9

Entries in the ICD-10-CM alphabetic index that lead to this code:

Neuritis, optic

Related codes in H46

H46.0 – Optic papillitisHeader
H46.1 – Retrobulbar neuritisHeader
H46.2 – Nutritional optic neuropathyBillable
H46.3 – Toxic optic neuropathyBillable
H46.8 – Other optic neuritisBillable

Frequently asked questions

What is ICD-10 code H46.9?

H46.9 is the ICD-10-CM code for unspecified optic neuritis, in the block H46-H47 (Disorders of optic nerve and visual pathways).

Is H46.9 a billable code?

Yes. H46.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does H46.9 belong to?

It belongs to category H46 – Optic neuritis.

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.