H40 Glaucoma

⚠ Non-Billable ICD-10-CM 2026
Create your free account → Open H40 in the app →

Get what a quick lookup can't: the AI assistant for official-guideline questions, HCC risk-adjustment mappings (CMS-HCC V24/V28, RxHCC), FDA drug indications, and AHA Coding Clinic references for H40.

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

Cite This Page

Reference H40 with the canonical source and edition:

H40 — Glaucoma. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/H40

Canonical URL: https://icd10codingpro.com/codes/H40

Related Codes

All Codes in H40

Every most-specific code under H40 Glaucoma (100 codes):

Show the complete H40 code list
H40.001 Preglaucoma, unspecified, right eye H40.002 Preglaucoma, unspecified, left eye H40.003 Preglaucoma, unspecified, bilateral H40.009 Preglaucoma, unspecified, unspecified eye 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 H40.021 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 H40.031 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 H40.041 Steroid responder, right eye H40.042 Steroid responder, left eye H40.043 Steroid responder, bilateral H40.049 Steroid responder, unspecified eye H40.051 Ocular hypertension, right eye H40.052 Ocular hypertension, left eye H40.053 Ocular hypertension, bilateral H40.059 Ocular hypertension, unspecified eye H40.061 Primary angle closure without glaucoma damage, right eye H40.062 Primary angle closure without glaucoma damage, left eye H40.063 Primary angle closure without glaucoma damage, bilateral H40.069 Primary angle closure without glaucoma damage, unspecified eye H40.10 Unspecified open-angle glaucoma H40.111 Primary open-angle glaucoma, right eye H40.112 Primary open-angle glaucoma, left eye H40.113 Primary open-angle glaucoma, bilateral H40.119 Primary open-angle glaucoma, unspecified eye H40.121 Low-tension glaucoma, right eye H40.122 Low-tension glaucoma, left eye H40.123 Low-tension glaucoma, bilateral H40.129 Low-tension glaucoma, unspecified eye H40.131 Pigmentary glaucoma, right eye H40.132 Pigmentary glaucoma, left eye H40.133 Pigmentary glaucoma, bilateral H40.139 Pigmentary glaucoma, unspecified eye H40.141 Capsular glaucoma with pseudoexfoliation of lens, right eye H40.142 Capsular glaucoma with pseudoexfoliation of lens, left eye H40.143 Capsular glaucoma with pseudoexfoliation of lens, bilateral H40.149 Capsular glaucoma with pseudoexfoliation of lens, unspecified eye H40.151 Residual stage of open-angle glaucoma, right eye H40.152 Residual stage of open-angle glaucoma, left eye H40.153 Residual stage of open-angle glaucoma, bilateral H40.159 Residual stage of open-angle glaucoma, unspecified eye H40.20 Unspecified primary angle-closure glaucoma H40.211 Acute angle-closure glaucoma, right eye H40.212 Acute angle-closure glaucoma, left eye H40.213 Acute angle-closure glaucoma, bilateral H40.219 Acute angle-closure glaucoma, unspecified eye H40.221 Chronic angle-closure glaucoma, right eye H40.222 Chronic angle-closure glaucoma, left eye H40.223 Chronic angle-closure glaucoma, bilateral H40.229 Chronic angle-closure glaucoma, unspecified eye H40.231 Intermittent angle-closure glaucoma, right eye H40.232 Intermittent angle-closure glaucoma, left eye H40.233 Intermittent angle-closure glaucoma, bilateral H40.239 Intermittent angle-closure glaucoma, unspecified eye H40.241 Residual stage of angle-closure glaucoma, right eye H40.242 Residual stage of angle-closure glaucoma, left eye H40.243 Residual stage of angle-closure glaucoma, bilateral H40.249 Residual stage of angle-closure glaucoma, unspecified eye H40.30 Glaucoma secondary to eye trauma, unspecified eye H40.31 Glaucoma secondary to eye trauma, right eye H40.32 Glaucoma secondary to eye trauma, left eye H40.33 Glaucoma secondary to eye trauma, bilateral H40.40 Glaucoma secondary to eye inflammation, unspecified eye H40.41 Glaucoma secondary to eye inflammation, right eye H40.42 Glaucoma secondary to eye inflammation, left eye H40.43 Glaucoma secondary to eye inflammation, bilateral H40.50 Glaucoma secondary to other eye disorders, unspecified eye H40.51 Glaucoma secondary to other eye disorders, right eye H40.52 Glaucoma secondary to other eye disorders, left eye H40.53 Glaucoma secondary to other eye disorders, bilateral H40.60 Glaucoma secondary to drugs, unspecified eye H40.61 Glaucoma secondary to drugs, right eye H40.62 Glaucoma secondary to drugs, left eye H40.63 Glaucoma secondary to drugs, bilateral H40.811 Glaucoma with increased episcleral venous pressure, right eye H40.812 Glaucoma with increased episcleral venous pressure, left eye H40.813 Glaucoma with increased episcleral venous pressure, bilateral H40.819 Glaucoma with increased episcleral venous pressure, unspecified eye H40.821 Hypersecretion glaucoma, right eye H40.822 Hypersecretion glaucoma, left eye H40.823 Hypersecretion glaucoma, bilateral H40.829 Hypersecretion glaucoma, unspecified eye H40.831 Aqueous misdirection, right eye H40.832 Aqueous misdirection, left eye H40.833 Aqueous misdirection, bilateral H40.839 Aqueous misdirection, unspecified eye H40.841 Neovascular secondary angle closure glaucoma, right eye H40.842 Neovascular secondary angle closure glaucoma, left eye H40.843 Neovascular secondary angle closure glaucoma, bilateral H40.849 Neovascular secondary angle closure glaucoma, unspecified eye H40.89 Other specified glaucoma H40.9 Unspecified glaucoma
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

Get HCC Mappings, Clinical Summaries, and More

Access premium features including HCC risk adjustment, FDA drug indications, AI coding assistant, and comprehensive clinical context.

Start Free Trial