2026 ICD-10-CM Diagnosis Code H22Disorders of iris and ciliary body in diseases classified elsewhere

ICD-10-CM Codes›H00–H59›H15-H22›H22

ICD-10-CM H22
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H22 is a billable ICD-10-CM diagnosis code for disorders of iris and ciliary body in diseases classified elsewhere. 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. The code is a manifestation code that cannot be reported as the principal diagnosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified eye disorders.

Code Identity

ICD-10-CM Code
H22
Billable Status
Yes — Valid for Submission
Code Describes
Disorders of iris and ciliary body in diseases classified elsewhere
Chapter
H15-H22
Disorders of sclera, cornea, iris and ciliary body

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH15-H22Disorders of sclera, cornea, iris and ciliary body
CategoryH22Disorders of iris and ciliary body in diseases classified elsewhere
This CodeH22Disorders of iris and ciliary body in diseases classified elsewhere

Code EditsBilling

Medicare Code Editor checks that affect claim validity for H22.

Manifestation diagnoses
Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and therefore should not be used as a principal diagnosis.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Ankylosing spondylitis
  • Ankylosing spondylitis co-occurrent with anterior uveitis
  • Human T-cell Lymphoma Virus Type -1 associated uveitis
  • Uveitis due to extended onset antinuclear antibody negative juvenile idiopathic oligoarthritis
  • Uveitis due to extended onset antinuclear antibody positive juvenile idiopathic oligoarthritis
  • Uveitis due to juvenile idiopathic arthritis
  • Uveitis due to persistent onset antinuclear antibody negative juvenile idiopathic oligoarthritis
  • Uveitis due to persistent onset antinuclear antibody positive juvenile idiopathic oligoarthritis

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Code First

  • underlying disease, such as:
  • gout M1A M10
  • leprosy A30
  • parasitic disease B89

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)
      • iris
        • in diseases classified elsewhere

Clinical ClassificationClinical

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

CCSR EYE012
Other specified eye disorders
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Eye Diseases

Even if your eyes feel healthy, you could have a problem and not know it. That's why regular eye exams are so important. Refractive errors are the most common type of vision problem that makes it hard to see clearly. But some eye conditions or diseases don't have any symptoms and can lead to a permanent loss of vision.

The full article covers:

  • What diseases can affect the eye?
  • What are the symptoms of eye diseases?
  • Who is more likely to develop eye diseases?
  • What are the treatments for eye diseases?
  • Can eye diseases be prevented?

Read the full article at MedlinePlus

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

Convert H22 to ICD-9-CMHistory

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

ICD-9-CM
364.89 Iris/ciliary disord NEC
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 H22Overview

Is H22 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report disorders of iris and ciliary body in diseases classified elsewhere on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does H22 group to?

On inpatient claims, disorders of iris and ciliary body in diseases classified elsewhere maps to MS-DRG 124, 125, with relative weights from 0.7678 to 1.3231 depending on complications. Higher weights mean higher Medicare reimbursement.

Can H22 be a principal diagnosis?

No. This is a manifestation code: disorders of iris and ciliary body in diseases classified elsewhere describes the manifestation of an underlying disease rather than the disease itself, so the underlying condition is sequenced first.

What is the ICD-9 equivalent of H22?

Under the General Equivalence Mappings, disorders of iris and ciliary body in diseases classified elsewhere converts to ICD-9-CM 364.89 (iris/ciliary disord NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.