2026 ICD-10-CM Diagnosis Code H18.893Other specified disorders of cornea, bilateral

ICD-10-CM Codes›H00–H59›H15-H22›H18

ICD-10-CM H18.893
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H18.893 is a billable ICD-10-CM diagnosis code for other specified disorders of cornea, bilateral. 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 Cornea and external disease.

Code Identity

ICD-10-CM Code
H18.893
Billable Status
Yes — Valid for Submission
Code Describes
Other specified disorders of cornea, bilateral
Short Description
Other specified disorders of cornea, bilateral
Same as the full description in the CMS dataset.
Parent Code
H18.89
Other specified disorders of cornea

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH15-H22Disorders of sclera, cornea, iris and ciliary body
CategoryH18Other disorders of cornea
This CodeH18.893Other specified disorders of cornea, bilateral

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bilateral corneal xerosis
  • Bilateral limbal stem cell deficiency
  • Corneal hemorrhage
  • Disorder of cornea of bilateral eyes
  • Dry cornea
  • Hemorrhage of substantia propria of cornea of bilateral eyes
  • Hemorrhage of substantia propria of cornea of left eye
  • Hemorrhage of substantia propria of cornea of right eye
  • Left limbal stem cell deficiency
  • Limbal stem cell deficiency
  • Right limbal stem cell deficiency
  • Stromal corneal hemorrhage
  • Vortex keratopathy
  • Vortex keratopathy of bilateral eyes
  • Vortex keratopathy of left eye
  • Vortex keratopathy of right eye

Clinical ClassificationClinical

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

CCSR EYE001
Cornea and external disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Limbal Stem Cell Deficiency

    loss or disturbance of limbal stem cell function in the corneal limbus resulting in inability to self-renew corneal epithelium and conjunctivalized corneal surface.

Patient EducationClinical

Corneal Disorders

Your cornea is the outermost layer of your eye. It is clear and shaped like a dome. The cornea helps to shield the rest of the eye from germs, dust, and other harmful matter. It also helps your eye to focus. If you wear contact lenses, they float on top of your corneas.

Read the full article at MedlinePlus

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

Convert H18.893 to ICD-9-CMHistory

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

ICD-9-CM
371.89 Corneal disorder 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 H18.893Overview

Is H18.893 (Other specified disorders of cornea) a billable code?

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

What MS-DRG does H18.893 group to?

When other specified disorders of cornea, bilateral 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 H18.893?

Under the General Equivalence Mappings, other specified disorders of cornea, bilateral converts to ICD-9-CM 371.89 (corneal disorder 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.