H40.0Header code — not billable
Glaucoma suspect
- Chapter
- 7. Diseases of the eye and adnexa
- Category
- H40
- Effective date
- October 1, 2026
Related codes in category H40
H40GlaucomaH40.00Preglaucoma, unspecifiedH40.001Preglaucoma, unspecified, right eyeYesH40.002Preglaucoma, unspecified, left eyeYesH40.003Preglaucoma, unspecified, bilateralYesH40.009Preglaucoma, unspecified, unspecified eyeYesH40.01Open angle with borderline findings, low riskH40.011Open angle with borderline findings, low risk, right eyeYesH40.012Open angle with borderline findings, low risk, left eyeYesH40.013Open angle with borderline findings, low risk, bilateralYesH40.019Open angle with borderline findings, low risk, unsp eyeYesH40.02Open angle with borderline findings, high risk
Frequently asked questions
What is ICD-10 code H40.0?
H40.0 is an ICD-10-CM diagnosis code for Glaucoma suspect.
Is H40.0 a billable code?
No. H40.0 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is H40.0 in?
H40.0 falls under Chapter 7: Diseases of the eye and adnexa.
When did H40.0 become effective?
H40.0 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to H40.0?
H40.0 belongs to category H40, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.