2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Influenza due to certain identified influenza viruses
Same as the full description in the CMS dataset.
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

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to J09: its own notes plus those printed at block J09-J18 and Chapter 10. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • 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.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block J09-J18 Influenza and pneumonia applies to 53 codes
  • allergic or eosinophilic pneumonia (J82)
  • aspiration pneumonia NOS (J69.0)
  • meconium pneumonia (P24.01)
  • neonatal aspiration pneumonia (P24.-)
  • pneumonia due to solids and liquids (J69.-)
  • congenital pneumonia (P23.9)
  • lipid pneumonia (J69.1)
  • rheumatic pneumonia (I00)
  • ventilator associated pneumonia (J95.851)
From Chapter 10 (J00-J99) Diseases of the respiratory system applies to 366 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • smoke inhalation (T59.81-)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Block J09-J18 Influenza and pneumonia applies to 53 codes
  • code, if applicable, to identify resistance to antimicrobial drugs (Z16.-)
From Chapter 10 (J00-J99) Diseases of the respiratory system applies to 366 codes
  • code, where applicable, to identify:
  • exposure to environmental tobacco smoke (Z77.22)
  • exposure to tobacco smoke in the perinatal period (P96.81)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Notes

General instructions on how these codes are used.

From Chapter 10 (J00-J99) Diseases of the respiratory system applies to 366 codes
  • When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g. tracheobronchitis to bronchitis in J40).

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name J09, its category, or a range that includes it.

Applicable To 1

These notes mention J09.

  • P00.2 Newborn affected by maternal infectious and parasitic diseases
    Newborn affected by maternal infectious disease classifiable to A00-B99, J09 and J10

Excludes2 1

These codes carry an Excludes2 note naming J09: its condition is not part of those codes, and both may be reported when the patient has both.

  • Block P35-P39 Infections specific to the perinatal period
    infectious diseases not specific to the perinatal period (A00-B99, J09, J10.-)

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About J09Overview

What is the ICD-10 code for influenza due to certain identified influenza viruses?

J09 is the ICD-10-CM category for influenza due to certain identified influenza viruses, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.

Can J09 be reported with a code from J10?

Not as a rule. The Excludes1 note on J09 lists "influenza A/H1N1 (J10.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).