2026 ICD-10-CM Diagnosis Code H15.122Nodular episcleritis, left eye

ICD-10-CM Codes›H00–H59›H15-H22›H15

ICD-10-CM H15.122
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H15.122 is a billable ICD-10-CM diagnosis code for nodular episcleritis, 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. Coders also document this condition as episcleritis of left eye. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Cornea and external disease and Uveitis and ocular inflammation.

Code Identity

ICD-10-CM Code
H15.122
Billable Status
Yes — Valid for Submission
Code Describes
Nodular episcleritis, left eye
Short Description
Nodular episcleritis, left eye
Same as the full description in the CMS dataset.
Parent Code
H15.12
Nodular episcleritis

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH15-H22Disorders of sclera, cornea, iris and ciliary body
CategoryH15Disorders of sclera
This CodeH15.122Nodular episcleritis, left eye

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Episcleritis of left eye
  • Nodular episcleritis
  • Nodular episcleritis of left 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
CCSR EYE004
Uveitis and ocular inflammation
Default principal diagnosis: inpatient No · outpatient No

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 H15.122 to ICD-9-CMHistory

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

ICD-9-CM
379.02 Nodular episcleritis
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 H15.122Overview

Is H15.122 (Nodular episcleritis) a billable code?

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

What MS-DRG does H15.122 group to?

When nodular episcleritis, 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 H15.122?

Under the General Equivalence Mappings, nodular episcleritis, left eye converts to ICD-9-CM 379.02 (nodular episcleritis). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.