H40 Glaucoma

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Glaucoma is H40 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
H40-H42: Glaucoma (H40-H42)
Category H40
129 codes (100 billable)
FY2026 Status
Stable since FY2024
Excludes1
Not coded here. These conditions should NOT be coded together with H40.
  • absolute glaucoma (H44.51-)
  • congenital glaucoma (Q15.0)
  • traumatic glaucoma due to birth injury (P15.3)

Official Coding Guidelines

Assigning glaucoma codes (use as many H40 codes as needed)

Assign as many codes from category H40, Glaucoma, as needed to identify the type of glaucoma, the affected eye, and the glaucoma stage.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.7.a.1
Glaucoma (TOC entry)

a. Glaucoma .............................................................................................................................. 48

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.7.a

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

More Specific Codes

H40.0 Glaucoma suspect H40.00 Preglaucoma, unspecified H40.001 Preglaucoma, unspecified, right eye H40.002 Preglaucoma, unspecified, left eye H40.003 Preglaucoma, unspecified, bilateral H40.009 Preglaucoma, unspecified, unspecified eye H40.01 Open angle with borderline findings, low risk H40.011 Open angle with borderline findings, low risk, right eye H40.012 Open angle with borderline findings, low risk, left eye H40.013 Open angle with borderline findings, low risk, bilateral H40.019 Open angle with borderline findings, low risk, unspecified eye H40.02 Open angle with borderline findings, high risk H40.021 Open angle with borderline findings, high risk, right eye H40.022 Open angle with borderline findings, high risk, left eye H40.023 Open angle with borderline findings, high risk, bilateral H40.029 Open angle with borderline findings, high risk, unspecified eye H40.03 Anatomical narrow angle H40.031 Anatomical narrow angle, right eye H40.032 Anatomical narrow angle, left eye H40.033 Anatomical narrow angle, bilateral H40.039 Anatomical narrow angle, unspecified eye H40.04 Steroid responder H40.041 Steroid responder, right eye H40.042 Steroid responder, left eye H40.043 Steroid responder, bilateral H40.049 Steroid responder, unspecified eye H40.05 Ocular hypertension H40.051 Ocular hypertension, right eye H40.052 Ocular hypertension, left eye H40.053 Ocular hypertension, bilateral

Related Codes in H40

H40.0 Glaucoma suspect H40.00 Preglaucoma, unspecified H40.001 Preglaucoma, unspecified, right eye H40.002 Preglaucoma, unspecified, left eye H40.003 Preglaucoma, unspecified, bilateral H40.009 Preglaucoma, unspecified, unspecified eye H40.01 Open angle with borderline findings, low risk H40.011 Open angle with borderline findings, low risk, right eye H40.012 Open angle with borderline findings, low risk, left eye H40.013 Open angle with borderline findings, low risk, bilateral H40.019 Open angle with borderline findings, low risk, unspecified eye H40.02 Open angle with borderline findings, high risk H40.021 Open angle with borderline findings, high risk, right eye H40.022 Open angle with borderline findings, high risk, left eye H40.023 Open angle with borderline findings, high risk, bilateral H40.029 Open angle with borderline findings, high risk, unspecified eye H40.03 Anatomical narrow angle H40.031 Anatomical narrow angle, right eye H40.032 Anatomical narrow angle, left eye H40.033 Anatomical narrow angle, bilateral
Search all 70,000+ ICD-10-CM codes →
Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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