2027 ICD-10-CM Diagnosis Code H21.82Plateau iris syndrome (post-iridectomy) (postprocedural)

ICD-10-CM Codes›H00–H59›H15-H22›H21

ICD-10-CM H21.82
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

H21.82 is a billable ICD-10-CM diagnosis code for plateau iris syndrome (post-iridectomy) (postprocedural). It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 124 through 125. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified eye disorders.

Code Identity

ICD-10-CM Code
H21.82
Billable Status
Yes — Valid for Submission
Code Describes
Plateau iris syndrome (post-iridectomy) (postprocedural)
Short Description
Plateau iris syndrome (post-iridectomy) (postprocedural)
Same as the full description in the CMS dataset.
Parent Code
H21.8
Other specified disorders of iris and ciliary body

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH15-H22Disorders of sclera, cornea, iris and ciliary body
CategoryH21Other disorders of iris and ciliary body
This CodeH21.82Plateau iris syndrome (post-iridectomy) (postprocedural)

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bilateral glaucoma due to plateau iris syndrome
  • Bilateral narrow angle of anterior chamber of eyes
  • Bilateral narrow angle of eyes
  • Bilateral plateau iris configuration
  • Bilateral plateau iris syndrome of eyes
  • Bilateral primary angle closure
  • Bilateral primary angle closure glaucoma
  • Glaucoma due to plateau iris syndrome
  • Glaucoma of left eye due to plateau iris syndrome
  • Glaucoma of right eye due to plateau iris syndrome
  • Narrow angle of anterior chamber of left eye
  • Narrow angle of anterior chamber of right eye
  • Narrow angle of left eye
  • Narrow angle of right eye
  • Plateau iris configuration
  • Plateau iris configuration of left eye
  • Plateau iris configuration of right eye
  • Plateau iris syndrome
  • Plateau iris syndrome of left eye
  • Plateau iris syndrome of right eye
  • Primary angle closure glaucoma of left eye
  • Primary angle closure glaucoma of right eye
  • Primary angle-closure glaucoma

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H21.82: its own notes plus those printed at H21 and Chapter 7. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From H21 Other disorders of iris and ciliary body applies to 97 codes
From Chapter 7 (H00-H59) Diseases of the eye and adnexa applies to 2,677 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury (trauma) of eye and orbit (S05.-)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)

Notes

General instructions on how these codes are used.

From Chapter 7 (H00-H59) Diseases of the eye and adnexa applies to 2,677 codes
  • Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name H21.82, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming H21.82: its condition is not part of those codes, and both may be reported when the patient has both.

  • T81 Complications of procedures, not elsewhere classified
    plateau iris syndrome (post-iridectomy) (postprocedural) H21.82

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

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

CCSR EYE012
Other specified eye disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

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:

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Read the full article at MedlinePlus

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

Convert H21.82 to ICD-9-CMHistory

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

ICD-9-CM
364.82 Plateau iris syndrome
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About H21.82Overview

What is the ICD-10 code for plateau iris syndrome (post-iridectomy) (postprocedural)?

The ICD-10-CM code for plateau iris syndrome (post-iridectomy) (postprocedural) is H21.82 (sometimes written as H2182). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is H21.82 (Other specified disorders of iris and ciliary body) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report plateau iris syndrome (post-iridectomy) (postprocedural) on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does H21.82 group to?

When plateau iris syndrome (post-iridectomy) (postprocedural) is the principal diagnosis on an inpatient stay, it groups to MS-DRG 125, 124, with relative weights from 0.7699 to 1.2470 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of H21.82?

Under the General Equivalence Mappings, plateau iris syndrome (post-iridectomy) (postprocedural) converts to ICD-9-CM 364.82 (plateau iris syndrome). The mapping is a direct match.