2026 ICD-10-CM Diagnosis Code H27.9Unspecified disorder of lens

ICD-10-CM Codes›H00–H59›H25-H28›H27

ICD-10-CM H27.9
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H27.9 is a billable ICD-10-CM diagnosis code for unspecified disorder of lens. 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 Cataract and other lens disorders.

Code Identity

ICD-10-CM Code
H27.9
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified disorder of lens
Short Description
Unspecified disorder of lens
Same as the full description in the CMS dataset.
Parent Code
H27
Other disorders of lens

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH25-H28Disorders of lens
CategoryH27Other disorders of lens
This CodeH27.9Unspecified disorder of lens

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bilateral acute angle closure
  • Bilateral disorder of lens
  • Bilateral phacolytic ocular hypertension
  • Bilateral phacomorphic angle closure glaucoma
  • Bilateral secondary acute angle closure
  • Bilateral secondary angle closure glaucoma
  • Disorder of lens
  • Disorder of lens capsule
  • Disorder of lens of left eye
  • Disorder of lens of right eye
  • Glaucoma of left eye due to lens disorder
  • Glaucoma of right eye due to lens disorder
  • Lens particle glaucoma
  • Phacogenic glaucoma
  • Phacolytic glaucoma
  • Phacolytic glaucoma of bilateral eyes
  • Phacolytic glaucoma of left eye
  • Phacolytic glaucoma of right eye
  • Phacolytic ocular hypertension
  • Phacolytic ocular hypertension of left eye
  • Phacolytic ocular hypertension of right eye
  • Phacomorphic glaucoma
  • Phacomorphic glaucoma of left eye
  • Phacomorphic glaucoma of right eye
  • Phacomorphic secondary acute angle closure
  • Phacomorphic secondary acute angle closure of bilateral eyes
  • Phacomorphic secondary acute angle closure of left eye
  • Phacomorphic secondary acute angle closure of right eye

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.

    • Disease, diseased
      • lens
    • Disorder(of)
      • lens

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

Eye Diseases

Even if your eyes feel healthy, you could have a problem and not know it. That's why regular eye exams are so important. Refractive errors are the most common type of vision problem that makes it hard to see clearly. But some eye conditions or diseases don't have any symptoms and can lead to a permanent loss of vision.

The full article covers:

  • What diseases can affect the eye?
  • What are the symptoms of eye diseases?
  • Who is more likely to develop eye diseases?
  • What are the treatments for eye diseases?
  • Can eye diseases be prevented?

Read the full article at MedlinePlus

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

Convert H27.9 to ICD-9-CMHistory

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

ICD-9-CM
379.39 Disorders of lens 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 H27.9Overview

Is H27.9 (Other disorders of lens) a billable code?

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

What MS-DRG does H27.9 group to?

When unspecified disorder of lens 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 H27.9?

Under the General Equivalence Mappings, unspecified disorder of lens converts to ICD-9-CM 379.39 (disorders of lens 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.