H40.21
Non-billableAcute angle-closure glaucoma
H40.21 is the ICD-10-CM code for Acute angle-closure glaucoma. It is a non-billable category code — use a more specific child code such as H40.211 for billing.
H00-H59 Diseases of the eye and adnexa
Includes
- •Acute angle-closure glaucoma attack
- •Acute angle-closure glaucoma crisis
Frequently asked questions
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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