2026 ICD-10-CM Diagnosis Code H20.823Vogt-Koyanagi syndrome, bilateral

ICD-10-CM Codes›H00–H59›H15-H22›H20

ICD-10-CM H20.823
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H20.823 is a billable ICD-10-CM diagnosis code for Vogt-Koyanagi syndrome, bilateral. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 124 through 125. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Uveitis and ocular inflammation.

Code Identity

ICD-10-CM Code
H20.823
Billable Status
Yes — Valid for Submission
Code Describes
Vogt-Koyanagi syndrome, bilateral
Short Description
Vogt-Koyanagi syndrome, bilateral
Same as the full description in the CMS dataset.
Parent Code
H20.82
Vogt-Koyanagi syndrome

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH15-H22Disorders of sclera, cornea, iris and ciliary body
CategoryH20Iridocyclitis
This CodeH20.823Vogt-Koyanagi syndrome, bilateral

Clinical ClassificationClinical

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

CCSR EYE004
Uveitis and ocular inflammation
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Eye Diseases

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Read the full article at MedlinePlus

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

Convert H20.823 to ICD-9-CMHistory

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

ICD-9-CM
364.24 Vogt-koyanagi syndrome
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 H20.823Overview

Is H20.823 (Vogt-Koyanagi syndrome) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report Vogt-Koyanagi syndrome, bilateral on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does H20.823 group to?

When Vogt-Koyanagi syndrome, bilateral is the principal diagnosis on an inpatient stay, it groups to MS-DRG 124, 125, with relative weights from 0.7678 to 1.3231 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of H20.823?

Under the General Equivalence Mappings, Vogt-Koyanagi syndrome, bilateral converts to ICD-9-CM 364.24 (vogt-koyanagi syndrome). 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.