2026 ICD-10-CM Diagnosis Code H25.9Unspecified age-related cataract

ICD-10-CM Codes›H00–H59›H25-H28›H25

ICD-10-CM H25.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H25.9 is a billable ICD-10-CM diagnosis code for unspecified age-related cataract. 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. The code is restricted by the Medicare Code Editor to adult patients (age 15 through 124). Coders also document this condition as age-related cataract of left eye. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Cataract and other lens disorders.

Code Identity

ICD-10-CM Code
H25.9
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified age-related cataract
Short Description
Unspecified age-related cataract
Same as the full description in the CMS dataset.
Parent Code
H25
Age-related cataract

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH25-H28Disorders of lens
CategoryH25Age-related cataract
This CodeH25.9Unspecified age-related cataract

Code EditsBilling

Medicare Code Editor checks that affect claim validity for H25.9.

Adult diagnoses
The Medicare Code Editor detects inconsistencies in adult cases by checking a patient's age and any diagnosis on the patient's record. The adult code edits apply to patients age range is 15–124 years inclusive (e.g., senile delirium, mature cataract).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Age-related cataract of left eye
  • Age-related cataract of right eye
  • Age-related lens opacity
  • Bilateral age-related cataract
  • Bilateral cataracts
  • Partial cataract
  • Senile cataract

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.

    • Cataract(cortical) (immature) (incipient)
      • senile

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

Clinical InformationClinical

  • Senile Cataract

    an age-related, anatomical abnormality that is caused by thickening of the lens of the eye.

  • Acquired Bilateral Cataracts

    cataracts in both eyes that result from the aging process, an injury, or as a manifestation of a systemic disorder.

  • Bilateral Cataracts

    partial or complete opacity of the crystalline lens of both eyes that decreases visual acuity and eventually results in blindness. some cataracts appear in infancy or in childhood, but most develop in older individuals. (sternberg diagnostic surgical pathology, 3rd ed.)

  • Congenital Bilateral Cataracts|Cataract, Congenital, Bilateral

    cataract in both eyes that are present at birth.

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 H25.9 to ICD-9-CMHistory

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

ICD-9-CM
366.10 Senile cataract NOS
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 H25.9Overview

Is H25.9 (Age-related cataract) a billable code?

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

What MS-DRG does H25.9 group to?

When unspecified age-related cataract 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.

Who can H25.9 be reported for?

The Medicare Code Editor checks unspecified age-related cataract against patient demographics: this code is intended for adult patients (age 15 through 124). Claims outside these limits are flagged as inconsistent.

What is the ICD-9 equivalent of H25.9?

Under the General Equivalence Mappings, unspecified age-related cataract converts to ICD-9-CM 366.10 (senile cataract NOS). The mapping is a direct match.

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.