J09

ICD-10Non-billable category

Influenza due to certain identified influenza viruses

Official ICD-10-CM descriptor (FY2026)

Influenza due to certain identified influenza viruses

J09 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.

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

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.-)

More specific codes under J09

J09.XInfluenza due to identified novel influenza A viruscategory

Where this code sits

Chapter: 10. Diseases of the respiratory system (J00-J99)
Block: Influenza and pneumonia (J09-J18)

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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.