2026 ICD-10-CM Diagnosis Code H20.032Secondary infectious iridocyclitis, left eye

ICD-10-CM Codes›H00–H59›H15-H22›H20

ICD-10-CM H20.032
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H20.032 is a billable ICD-10-CM diagnosis code for secondary infectious iridocyclitis, left eye. 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
H20.032
Billable Status
Yes — Valid for Submission
Code Describes
Secondary infectious iridocyclitis, left eye
Short Description
Secondary infectious iridocyclitis, left eye
Same as the full description in the CMS dataset.
Parent Code
H20.03
Secondary infectious iridocyclitis

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH15-H22Disorders of sclera, cornea, iris and ciliary body
CategoryH20Iridocyclitis
This CodeH20.032Secondary infectious iridocyclitis, left eye

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 H20.032 to ICD-9-CMHistory

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

ICD-9-CM
364.03 Secondry iritis, infect
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 H20.032Overview

Is H20.032 (Secondary infectious iridocyclitis) a billable code?

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

What MS-DRG does H20.032 group to?

When secondary infectious iridocyclitis, left eye 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 H20.032?

Under the General Equivalence Mappings, secondary infectious iridocyclitis, left eye converts to ICD-9-CM 364.03 (secondry iritis, infect). 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.