2026 ICD-10-CM Diagnosis Code H40.063Primary angle closure without glaucoma damage, bilateral

ICD-10-CM Codes›H00–H59›H40-H42›H40

ICD-10-CM H40.063
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H40.063 is a billable ICD-10-CM diagnosis code for primary angle closure without glaucoma damage, 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 Glaucoma.

Code Identity

ICD-10-CM Code
H40.063
Billable Status
Yes — Valid for Submission
Code Describes
Primary angle closure without glaucoma damage, bilateral
Short Description
Primary angle closure without glaucoma damage, bilateral
Same as the full description in the CMS dataset.
Parent Code
H40.06
Primary angle closure without glaucoma damage

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH40-H42Glaucoma
CategoryH40Glaucoma
This CodeH40.063Primary angle closure without glaucoma damage, bilateral

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute primary angle closure
  • Acute primary angle closure of left eye
  • Acute primary angle closure of right eye
  • Bilateral acute angle closure
  • Bilateral acute primary angle closure
  • Bilateral closed angle of eyes
  • Bilateral primary angle closure
  • Primary angle closure of left eye
  • Primary angle closure of right eye

Clinical ClassificationClinical

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

CCSR EYE003
Glaucoma
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Glaucoma

Glaucoma is a group of diseases that can damage the optic nerve of one, or both, of your eyes. This can result in vision loss. There are different types of glaucoma, but the most common type is open-angle glaucoma. Other less common types include angle-closure glaucoma, and congenital glaucoma.

The full article covers:

  • What is glaucoma?
  • What causes glaucoma?
  • What are the symptoms of glaucoma?
  • How is glaucoma diagnosed?
  • What are the treatments for glaucoma?
  • Can glaucoma be prevented?

Read the full article at MedlinePlus

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

Convert H40.063 to ICD-9-CMHistory

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

ICD-9-CM
365.06 Prim angle clos w/o dmg
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 H40.063Overview

Is H40.063 (Primary angle closure without glaucoma damage) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report primary angle closure without glaucoma damage, bilateral on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does H40.063 group to?

When primary angle closure without glaucoma damage, 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 H40.063?

Under the General Equivalence Mappings, primary angle closure without glaucoma damage, bilateral converts to ICD-9-CM 365.06 (prim angle clos w/o dmg). 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.