J09.X

ICD-10Non-billable category

Influenza due to identified novel influenza A virus

Official ICD-10-CM descriptor (FY2026)

Influenza due to identified novel influenza A virus

J09.X is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Inclusion terms

  • 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)

ICD-10-CM FY2026 defines 4 codes beneath J09.X. See the ICD-10-CM index for what this site publishes.

Where this code sits

Parent code
J09

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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