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J09

J09Influenza due to certain identified influenza viruses

Non-billable headerICD-10-CM

J09 is a non-billable header ICD-10-CM code for influenza due to certain identified influenza viruses. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • 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.-)

Other codes that can never be billed with J09

These codes carry an Excludes1 note pointing at J09. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading J09 alone.

  • A08Viral and other specified intestinal infections
  • G94Other disorders of brain in diseases classified elsewhere
  • H67Otitis media in diseases classified elsewhere
  • I41Myocarditis in diseases classified elsewhere
  • J00Acute nasopharyngitis [common cold]
  • J02.9Acute pharyngitis, unspecified
  • J03.9Acute tonsillitis, unspecified
  • J06Acute upper respiratory infections of multiple and unspecified sites

Risk adjustment

J09 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead J09

1 child code. Green means billable.

Questions about J09

Is J09 a billable ICD-10-CM code?
No. J09 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does J09 sit in the tabular list?
Diseases of the respiratory system (J00-J99), in the block Influenza and pneumonia (J09-J18).
What cannot be coded together with J09?
J09 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.