J11.1

ICD-10Billable

Flu due to unidentified influenza virus w oth resp manifest

Official ICD-10-CM descriptor (FY2026)

Influenza due to unidentified influenza virus with other respiratory manifestations

J11.1 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

  • Influenza NOS
  • Influenzal laryngitis NOS
  • Influenzal pharyngitis NOS
  • Influenza with upper respiratory symptoms NOS

Use additional code

Report an additional code to identify the associated condition.

  • code for associated pleural effusion, if applicable (J91.8)
  • code for associated sinusitis, if applicable (J01.-)

Related codes in J11

Where this code sits

Parent code
J11

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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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