2026 ICD-10-CM Diagnosis Code J09Influenza due to certain identified influenza viruses

ICD-10-CM Codes›J00–J99›J09-J18›J09

ICD-10-CM J09
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

J09 is a non-billable ICD-10-CM category code for influenza due to certain identified influenza viruses, so it cannot be submitted on claims. Use a more specific code from this category instead, such as J09.X1, J09.X2, J09.X3, and J09.X9.

Code Identity

ICD-10-CM Code
J09
Billable Status
No — Non-Billable Category
Code Describes
Influenza due to certain identified influenza viruses
Chapter
J09-J18
Influenza and pneumonia

Code Classification

ChapterJ00–J99Diseases of the respiratory system
SectionJ09-J18Influenza and pneumonia
CategoryJ09Influenza due to certain identified influenza viruses
This CodeJ09Influenza due to certain identified influenza viruses

Specific Coding for Influenza due to certain identified influenza virusesOverview

Non-specific codes like J09 require more characters. Use one of these billable codes instead:

  • J09.X for Influenza due to identified novel influenza A virus

  • Use J09.X1 for Influenza due to identified novel influenza A virus with pneumonia

  • Use J09.X2 for Influenza due to identified novel influenza A virus with other respiratory manifestations

  • Use J09.X3 for Influenza due to identified novel influenza A virus with gastrointestinal manifestations

  • Use J09.X9 for Influenza due to identified novel influenza A virus with other manifestations

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 1 Excludes

  • influenza A/H1N1 J10
  • influenza due to other identified influenza virus J10
  • influenza due to unidentified influenza virus J11
  • seasonal influenza due to other identified influenza virus J10
  • seasonal influenza due to unidentified influenza virus J11

Patient EducationClinical

Flu

The flu, also called influenza, is a respiratory infection caused by viruses. Each year, millions of Americans get sick with the flu. Sometimes it causes mild illness. But it can also be serious or even deadly, especially for people over 65, newborn babies, and people with certain chronic illnesses.

The full article covers:

  • What is the flu?
  • What causes the flu?
  • What are the symptoms of the flu?
  • What other problems can the flu cause?
  • How is the flu diagnosed?
  • What are the treatments for the flu?
  • Can the flu be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About J09Overview

Is J09 (Influenza due to certain identified influenza viruses) a billable code?

No. This is a category header that groups the codes for influenza due to certain identified influenza viruses, and headers cannot be submitted on claims. Claims for influenza due to certain identified influenza viruses need a more specific code from this category, such as J09.X1, J09.X2, and J09.X3.