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A08.1

Non-billable

Acute gastroenteropathy due to Norwalk agent and other small round viruses

A08.1 is the ICD-10-CM code for Acute gastroenteropathy due to Norwalk agent and other small round viruses. It is a non-billable category code — use a more specific child code such as A08.11 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Parent
A08
Subcodes
2
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code A08.1?
A08.1 is the ICD-10-CM code for "Acute gastroenteropathy due to Norwalk agent and other small round viruses". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A08.1 a billable code?
No — A08.1 is a non-billable header code. Use a more specific child code (such as A08.11) for billing.
What are the subcodes of A08.1?
A08.1 has 2 more specific child codes, including A08.11, A08.19.

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

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