2026 ICD-10-CM Diagnosis Code H26.122Partially resolved traumatic cataract, left eye

ICD-10-CM Codes›H00–H59›H25-H28›H26

ICD-10-CM H26.122
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H26.122 is a billable ICD-10-CM diagnosis code for partially resolved traumatic cataract, 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 cataract of left eye due to and following trauma. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Cataract and other lens disorders.

Code Identity

ICD-10-CM Code
H26.122
Billable Status
Yes — Valid for Submission
Code Describes
Partially resolved traumatic cataract, left eye
Short Description
Partially resolved traumatic cataract, left eye
Same as the full description in the CMS dataset.
Parent Code
H26.12
Partially resolved traumatic cataract

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH25-H28Disorders of lens
CategoryH26Other cataract
This CodeH26.122Partially resolved traumatic cataract, left eye

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Cataract of left eye due to and following trauma
  • Partially resolved traumatic cataract
  • Partially resolved traumatic cataract of left eye

Clinical ClassificationClinical

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

CCSR EYE002
Cataract and other lens disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Cataract

A cataract is a clouding of the lens in your eye. It affects your vision. Cataracts are very common in older people. By age 80, more than half of all Americans either have a cataract or have had cataract surgery.

Read the full article at MedlinePlus

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

Convert H26.122 to ICD-9-CMHistory

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

ICD-9-CM
366.23 Part resolv traum catar
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 H26.122Overview

Is H26.122 (Partially resolved traumatic cataract) a billable code?

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

What MS-DRG does H26.122 group to?

When partially resolved traumatic cataract, 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 H26.122?

Under the General Equivalence Mappings, partially resolved traumatic cataract, left eye converts to ICD-9-CM 366.23 (part resolv traum catar). 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.