2026 ICD-10-CM Diagnosis Code H47.43Disorders of optic chiasm in (due to) vascular disorders

ICD-10-CM Codes›H00–H59›H46-H47›H47

ICD-10-CM H47.43
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H47.43 is a billable ICD-10-CM diagnosis code for disorders of optic chiasm in (due to) vascular disorders. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). Coders also document this condition as disorder of optic chiasm associated with vascular disorder. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neuro-ophthalmology.

Code Identity

ICD-10-CM Code
H47.43
Billable Status
Yes — Valid for Submission
Code Describes
Disorders of optic chiasm in (due to) vascular disorders
Short Description
Disorders of optic chiasm in (due to) vascular disorders
Same as the full description in the CMS dataset.
Parent Code
H47.4
Disorders of optic chiasm

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH46-H47Disorders of optic nerve and visual pathways
CategoryH47Other disorders of optic [2nd] nerve and visual pathways
This CodeH47.43Disorders of optic chiasm in (due to) vascular disorders

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Disorder of optic chiasm associated with vascular disorder
  • Disorder of optic chiasm due to vascular disorder
  • Disorder of visual pathways associated with vascular disorder
  • Infarction of optic chiasm
  • Injury of optic chiasm

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Disorder(of)
      • optic
        • chiasm
          • due to
            • vascular disorder

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 H47.43 to ICD-9-CMHistory

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

ICD-9-CM
377.53 Opt chiasm w vascul dis
Exact Match The mapping is direct, with no qualifiers.

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 H47.43Overview

Is H47.43 (Disorders of optic chiasm) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report disorders of optic chiasm in (due to) vascular disorders on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of H47.43?

Under the General Equivalence Mappings, disorders of optic chiasm in (due to) vascular disorders converts to ICD-9-CM 377.53 (opt chiasm w vascul dis). The mapping is a direct match.

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.