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

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Code also

• , if applicable, associated:
• lung abscess (J85.1)
• other specified type of pneumonia

Applies from J09 Influenza due to certain identified influenza viruses

Excludes1 (never code together)

• 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.-)

Applies from J09.X Influenza due to identified novel influenza A virus

Applicable to

• 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)

MS-DRG index

Defines the logic of DRG(s) 193-195 in MDC 04.

Approximate ICD-9-CM (GEMs)

• 488.01 Influenza due to identified avian influenza virus with pneumonia (approximate)
• 488.81 Influenza due to identified novel influenza A virus with pneumonia (approximate)

Code annotations containing back-references to J09.X1

Back-references to J09.X1

• Code First: J12 Viral pneumonia, not elsewhere classified ("associated influenza, if applicable (J09.X1, J10.0-, J11.0-)")
• Code First: J13 Pneumonia due to Streptococcus pneumoniae (", if applicable, associated influenza (J09.X1, J10.0-, J11.0-)")
• Code First: J14 Pneumonia due to Hemophilus influenzae (", if applicable, associated influenza (J09.X1, J10.0-, J11.0-)")
• Code First: J15 Bacterial pneumonia, not elsewhere classified (", if applicable, associated influenza (J09.X1, J10.0-, J11.0-)")
• Code First: J16 Pneumonia due to other infectious organisms, not elsewhere classified (", if applicable, associated influenza (J09.X1, J10.0-, J11.0-)")
• Code First: J18 Pneumonia, unspecified organism (", if applicable, associated influenza (J09.X1, J10.0-, J11.0-)")

Back-references to J09.X

• Type 1 Excludes: J10 Influenza due to other identified influenza virus ("influenza due to avian influenza virus (J09.X-)")
• Type 1 Excludes: J10 Influenza due to other identified influenza virus ("influenza due to swine flu (J09.X-)")

Diagnosis Index entries for J09.X1

• Influenza (bronchial) (epidemic) (respiratory (upper)) (unidentified influenza virus) › due to › identified novel influenza A virus › with › pneumonia

Nearby codes

• J09 Influenza due to certain identified influenza viruses
• J09.X Influenza due to identified novel influenza A virus
• J09.X1 Influenza due to identified novel influenza A virus with pneumonia (this code)
• J09.X2 Influenza due to identified novel influenza A virus with other respiratory manifestations
• J09.X3 Influenza due to identified novel influenza A virus with gastrointestinal manifestations
• J09.X9 Influenza due to identified novel influenza A virus with other manifestations