ICD-10 Code
International Classification of Diseases, 10th Revision
Aug 21, 2017

See: Influenza due to certain identified influenza viruses

J09.X is NOT a complete or valid ICD 10 diagnosis code.

You should code each health care encounter to the level of certainty known for that encounter. When sufficient clinical information is not known or available to assign a more specific code, it is acceptable to report the appropriate unspecified code.

See below for more specifc codes relating to
Influenza due to identified novel influenza A virus

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Inclusion Term
  • 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)

More specific codes for Influenza due to identified novel influenza A virus

  • J09.X1 - Influenza due to identified novel influenza A virus with pneumonia
  • 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
See the 2017 ICD-10-CM Coding Guidelines.

Questions related to J09.X Influenza due to identified novel influenza A virus

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.