2026 ICD-10-CM Diagnosis Code H20.21Lens-induced iridocyclitis, right eye

ICD-10-CM Codes›H00–H59›H15-H22›H20

ICD-10-CM H20.21
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H20.21 is a billable ICD-10-CM diagnosis code for lens-induced iridocyclitis, right 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. Coders also document this condition as glaucoma of right eye with intraocular hemorrhage. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Uveitis and ocular inflammation.

Code Identity

ICD-10-CM Code
H20.21
Billable Status
Yes — Valid for Submission
Code Describes
Lens-induced iridocyclitis, right eye
Short Description
Lens-induced iridocyclitis, right eye
Same as the full description in the CMS dataset.
Parent Code
H20.2
Lens-induced iridocyclitis

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH15-H22Disorders of sclera, cornea, iris and ciliary body
CategoryH20Iridocyclitis
This CodeH20.21Lens-induced iridocyclitis, right eye

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Glaucoma of right eye with intraocular hemorrhage
  • Glaucoma with intraocular hemorrhage
  • Hemorrhage associated with implant
  • Hyphema of right eye
  • Intraocular lens associated postoperative inflammation
  • Postoperative uveitis
  • Secondary open angle glaucoma due to ocular surgery
  • Secondary open angle glaucoma of right eye due to ocular surgery
  • Uveitis-glaucoma-hyphema syndrome
  • Uveitis-glaucoma-hyphema syndrome of right 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

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Read the full article at MedlinePlus

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

Convert H20.21 to ICD-9-CMHistory

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

ICD-9-CM
364.23 Lens-induced iridocyclit
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 H20.21Overview

Is H20.21 (Lens-induced iridocyclitis) a billable code?

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

What MS-DRG does H20.21 group to?

When lens-induced iridocyclitis, right 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 H20.21?

Under the General Equivalence Mappings, lens-induced iridocyclitis, right eye converts to ICD-9-CM 364.23 (lens-induced iridocyclit). 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.