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J09.X

Non-billable

Influenza due to identified novel influenza A virus

J09.X is the ICD-10-CM code for Influenza due to identified novel influenza A virus. It is a non-billable category code — use a more specific child code such as J09.X1 for billing.

Status
Header (non-billable)
Chapter
J00-J99
Parent
J09
Subcodes
4
Edition
FY2026

J00-J99 Diseases of the respiratory system

Includes

  • •Avian influenza
  • •Bird influenza
  • •Influenza A/H5N1
  • •Influenza of other animal origin, not bird or swine
  • •Swine influenza virus (viruses that normally cause infections in pigs)

Frequently asked questions

What is ICD-10 code J09.X?
J09.X is the ICD-10-CM code for "Influenza due to identified novel influenza A virus". It falls under J00-J99 Diseases of the respiratory system.
Is J09.X a billable code?
No — J09.X is a non-billable header code. Use a more specific child code (such as J09.X1) for billing.
What are the subcodes of J09.X?
J09.X has 4 more specific child codes, including J09.X1, J09.X2, J09.X3.

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

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