2026 ICD-10-CM Diagnosis Code H52.32Aniseikonia

ICD-10-CM Codes›H00–H59›H49-H52›H52

ICD-10-CM H52.32
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H52.32 is a billable ICD-10-CM diagnosis code for aniseikonia. 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 Refractive error.

Code Identity

ICD-10-CM Code
H52.32
Billable Status
Yes — Valid for Submission
Code Describes
Aniseikonia
Short Description
Aniseikonia
Same as the full description in the CMS dataset.
Parent Code
H52.3
Anisometropia and aniseikonia

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH49-H52Disorders of ocular muscles, binocular movement, accommodation and refraction
CategoryH52Disorders of refraction and accommodation
This CodeH52.32Aniseikonia

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Aniseikonia
  • Anisometropia
  • Anisometropia and aniseikonia

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.

    • Aniseikonia
    • Disorder(of)
      • refraction
        • aniseikonia

Clinical ClassificationClinical

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

CCSR EYE009
Refractive error
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Aniseikonia

    a condition in which the ocular image of an object as seen by one eye differs in size and shape from that seen by the other.

  • Anisometropia

    a condition of an inequality of refractive power of the two eyes.

  • Anisometropia

    a condition where there is a significant difference in refractive error between an individual's eyes.

Patient EducationClinical

Refractive Errors

The cornea and lens of your eye helps you focus. Refractive errors are vision problems that happen when the shape of the eye keeps you from focusing well. The cause could be the length of the eyeball (longer or shorter), changes in the shape of the cornea, or aging of the lens.

Read the full article at MedlinePlus

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

Convert H52.32 to ICD-9-CMHistory

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

ICD-9-CM
367.32 Aniseikonia
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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About H52.32Overview

Is H52.32 (Anisometropia and aniseikonia) a billable code?

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

What MS-DRG does H52.32 group to?

When aniseikonia 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 H52.32?

Under the General Equivalence Mappings, aniseikonia converts to ICD-9-CM 367.32 (aniseikonia). The mapping is a direct match.

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.