J09-J18Not billable, use a more specific code below
Influenza and pneumonia (J09-J18)
chapter 10: Diseases of the Respiratory System
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Instructional notes
Excludes2: not included here, code separately if applicable
Use additional code: add a second code for this, listed after this one
- code, if applicable, to identify resistance to antimicrobial drugs (Z16.-)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
- Section I.C.10.c Influenza due to certain identified influenza viruses (page 57), covers J09-J18
Code J09 or J10 only for influenza the provider states is due to an identified virus; lab confirmation is not required. Code suspected, possible, or probable identified influenza to J11.
Other Chapter 10 topics:
- Chronic Obstructive Pulmonary Disease [COPD] and Asthma (page 56)
- Acute Respiratory Failure (page 56)
- Ventilator associated Pneumonia (page 57)
- Vaping-related disorders (page 58)
All codes under J09-J18
J09-J18 can't be used on a claim. Pick a billable code below; grey headings group them.
- J09Influenza due to certain identified influenza viruses
- J09.XInfluenza due to identified novel influenza A virus
- J09.X1Influenza due to identified novel influenza A virus with pneumonia
- J09.X2Influenza due to identified novel influenza A virus with other respiratory manifestations
- J09.X3Influenza due to identified novel influenza A virus with gastrointestinal manifestations
- J09.X9Influenza due to identified novel influenza A virus with other manifestations
- J10Influenza due to other identified influenza virus
- J10.0Influenza due to other identified influenza virus with pneumonia
- J10.00Influenza due to other identified influenza virus with unspecified type of pneumonia
- J10.01Influenza due to other identified influenza virus with the same other identified influenza virus pneumonia
- J10.08Influenza due to other identified influenza virus with other specified pneumonia
- J10.1Influenza due to other identified influenza virus with other respiratory manifestations
- J10.2Influenza due to other identified influenza virus with gastrointestinal manifestations
- J10.8Influenza due to other identified influenza virus with other manifestations
- J10.81Influenza due to other identified influenza virus with encephalopathy
- J10.82Influenza due to other identified influenza virus with myocarditis
- J10.83Influenza due to other identified influenza virus with otitis media
- J10.89Influenza due to other identified influenza virus with other manifestations
- J11Influenza due to unidentified influenza virus
- J11.0Influenza due to unidentified influenza virus with pneumonia
- J11.00Influenza due to unidentified influenza virus with unspecified type of pneumonia
- J11.08Influenza due to unidentified influenza virus with specified pneumonia
- J11.1Influenza due to unidentified influenza virus with other respiratory manifestations
- J11.2Influenza due to unidentified influenza virus with gastrointestinal manifestations
- J11.8Influenza due to unidentified influenza virus with other manifestations
- J11.81Influenza due to unidentified influenza virus with encephalopathy
- J11.82Influenza due to unidentified influenza virus with myocarditis
- J11.83Influenza due to unidentified influenza virus with otitis media
- J11.89Influenza due to unidentified influenza virus with other manifestations
- J12Viral pneumonia, not elsewhere classified
- J12.0Adenoviral pneumonia
- J12.1Respiratory syncytial virus pneumonia
- J12.2Parainfluenza virus pneumonia
- J12.3Human metapneumovirus pneumonia
- J12.8Other viral pneumonia
- J12.81Pneumonia due to SARS-associated coronavirus
- J12.82Pneumonia due to coronavirus disease 2019
- J12.89Other viral pneumonia
- J12.9Viral pneumonia, unspecified
- J13Pneumonia due to Streptococcus pneumoniae
- J14Pneumonia due to Hemophilus influenzae
- J15Bacterial pneumonia, not elsewhere classified
- J15.0Pneumonia due to Klebsiella pneumoniae
- J15.1Pneumonia due to Pseudomonas
- J15.2Pneumonia due to staphylococcus
- J15.20Pneumonia due to staphylococcus, unspecified
- J15.21Pneumonia due to staphylococcus aureus
- J15.211Pneumonia due to Methicillin susceptible Staphylococcus aureus
- J15.212Pneumonia due to Methicillin resistant Staphylococcus aureus
- J15.29Pneumonia due to other staphylococcus
- J15.3Pneumonia due to streptococcus, group B
- J15.4Pneumonia due to other streptococci
- J15.5Pneumonia due to Escherichia coli
- J15.6Pneumonia due to other Gram-negative bacteria
- J15.61Pneumonia due to Acinetobacter baumannii
- J15.69Pneumonia due to other Gram-negative bacteria
- J15.7Pneumonia due to Mycoplasma pneumoniae
- J15.8Pneumonia due to other specified bacteria
- J15.9Unspecified bacterial pneumonia
- J16Pneumonia due to other infectious organisms, not elsewhere classified
- J16.0Chlamydial pneumonia
- J16.8Pneumonia due to other specified infectious organisms
- J17Pneumonia in diseases classified elsewhere
- J18Pneumonia, unspecified organism
- J18.0Bronchopneumonia, unspecified organism
- J18.1Lobar pneumonia, unspecified organism
- J18.2Hypostatic pneumonia, unspecified organism
- J18.8Other pneumonia, unspecified organism
- J18.9Pneumonia, unspecified organism
J09-J18 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
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.
Read more about flu on MedlinePlus