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H18.22

Non-billable

Idiopathic corneal edema

H18.22 is the ICD-10-CM code for Idiopathic corneal edema. It is a non-billable category code — use a more specific child code such as H18.221 for billing.

Status
Header (non-billable)
Chapter
H00-H59
Parent
H18.2
Subcodes
4
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 H18.22?
H18.22 is the ICD-10-CM code for "Idiopathic corneal edema". It falls under H00-H59 Diseases of the eye and adnexa.
Is H18.22 a billable code?
No — H18.22 is a non-billable header code. Use a more specific child code (such as H18.221) for billing.
What are the subcodes of H18.22?
H18.22 has 4 more specific child codes, including H18.221, H18.222, H18.223.

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

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