2026 ICD-10-CM Diagnosis Code H46.02Optic papillitis, left eye

ICD-10-CM Codes›H00–H59›H46-H47›H46

ICD-10-CM H46.02
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H46.02 is a billable ICD-10-CM diagnosis code for optic papillitis, left eye. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as neuritis of left optic nerve. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neuro-ophthalmology.

Code Identity

ICD-10-CM Code
H46.02
Billable Status
Yes — Valid for Submission
Code Describes
Optic papillitis, left eye
Short Description
Optic papillitis, left eye
Same as the full description in the CMS dataset.
Parent Code
H46.0
Optic papillitis

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH46-H47Disorders of optic nerve and visual pathways
CategoryH46Optic neuritis
This CodeH46.02Optic papillitis, left eye

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Neuritis of left optic nerve
  • Optic papillitis of left eye

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR EYE006
Neuro-ophthalmology
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

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 the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert H46.02 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
377.31 Optic papillitis
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About H46.02Overview

Is H46.02 (Optic papillitis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report optic papillitis, left eye on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of H46.02?

Under the General Equivalence Mappings, optic papillitis, left eye converts to ICD-9-CM 377.31 (optic papillitis). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.