J11

Non-billable

Influenza due to unidentified influenza virus

J11 is the ICD-10-CM code for Influenza due to unidentified influenza virus. It is a non-billable category code — use a more specific child code such as J11.0 for billing.

Status
Header (non-billable)
Chapter
J00-J99
Subcodes
4
Edition
FY2026

J00-J99 Diseases of the respiratory system

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code J11?
J11 is the ICD-10-CM code for "Influenza due to unidentified influenza virus". It falls under J00-J99 Diseases of the respiratory system.
Is J11 a billable code?
No — J11 is a non-billable header code. Use a more specific child code (such as J11.0) for billing.
What are the subcodes of J11?
J11 has 4 more specific child codes, including J11.0, J11.1, J11.2.

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

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