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H40.1

Non-billable

Open-angle glaucoma

H40.1 is the ICD-10-CM code for Open-angle glaucoma. It is a non-billable category code — use a more specific child code such as H40.10 for billing.

Status
Header (non-billable)
Chapter
H00-H59
Parent
H40
Subcodes
6
Edition
FY2026

H00-H59 Diseases of the eye and adnexa

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code H40.1?
H40.1 is the ICD-10-CM code for "Open-angle glaucoma". It falls under H00-H59 Diseases of the eye and adnexa.
Is H40.1 a billable code?
No — H40.1 is a non-billable header code. Use a more specific child code (such as H40.10) for billing.
What are the subcodes of H40.1?
H40.1 has 6 more specific child codes, including H40.10, H40.11, H40.12.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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