Is J09.X a billable ICD-10-CM code?

No. J09.X is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does J09.X 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.X?

J09.X carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above J09.X (J09) and apply to it just the same.

J09.X

J09.X — Influenza due to identified novel influenza A virus

Non-billable headerICD-10-CM

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

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

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)

Excludes1 inherited from the categories above J09.X

These are not written on J09.X, but they bind it: a note on a category applies to every code beneath it. Billing J09.X with anything listed here is a denial.

Written on J09 — Influenza due to certain identified influenza viruses

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.X

These codes carry an Excludes1 note pointing at J09.X. 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.X alone.

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
J10Influenza due to other identified influenza virus

Risk adjustment

J09.X 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.

The condition this code belongs to

Every code for the condition on one page, which one applies when, and the mistake coders make with it.

Influenza ICD-10 codes

Code history

J09.X has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead J09.X

4 child codes. Green means billable.

Questions about J09.X

Is J09.X a billable ICD-10-CM code?: No. J09.X is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does J09.X 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.X?: J09.X carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above J09.X (J09) and apply to it just the same.