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J09 ICD-10-CA code: Influenza due to identified zoonotic or pandemic influenza virus

J09 is the ICD-10-CA code for “Influenza due to identified zoonotic or pandemic influenza virus” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

J09

Influenza due to identified zoonotic or pandemic influenza virus

Short description: Influenza dt ident zoo/pand influ virus

ICD-10-CA · Canada

Index terms

Entries in CIHI’s alphabetical index that lead to J09. Searching the index by the condition the note names is how coders reach this code.

  • Influenza (specific virus not identified), zoonotic or pandemic virus identified
  • Meningismus, influenzal (specific virus not identified), zoonotic or pandemic influenza virus identified
  • Influenza (specific virus not identified), with, enteritis, zoonotic or pandemic influenza virus identified
  • Influenza (specific virus not identified), with, laryngitis, zoonotic or pandemic influenza virus identified
  • Influenza (specific virus not identified), with, meningismus, zoonotic or pandemic influenza virus identified
  • Influenza (specific virus not identified), with, pharyngitis, zoonotic or pandemic influenza virus identified
  • Influenza (specific virus not identified), with, gastroenteritis, zoonotic or pandemic influenza virus identified
  • Influenza (specific virus not identified), with, manifestations NEC, zoonotic or pandemic influenza virus identified
  • Influenza (specific virus not identified), with, pleural effusion NEC, zoonotic or pandemic influenza virus identified
  • Influenza (specific virus not identified), with, digestive manifestations, zoonotic or pandemic influenza virus identified
  • Enteritis (diarrheal) (hemorrhagic), influenzal (specific virus not identified), zoonotic or pandemic influenza virus identified
  • Influenza (specific virus not identified), with, respiratory manifestations NEC, zoonotic or pandemic influenza virus identified
  • Influenza (specific virus not identified), with, involvement of, nervous system NEC, zoonotic or pandemic influenza virus identified
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved), influenzal, zoonotic or pandemic influenza virus identified
  • Influenza (specific virus not identified), with, involvement of, gastrointestinal tract, zoonotic or pandemic influenza virus identified
  • Influenza (specific virus not identified), with, upper respiratory infection (acute) NEC, zoonotic or pandemic influenza virus identified
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved), in (due to), influenza, zoonotic or pandemic influenza virus identified
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved), with, influenza, flu, or grippe (specific virus not identified), zoonotic or pandemic influenza virus identified

Notes for J09

As CIHI prints them, with any note J09 takes from the headings above it.

Use additional code

Add a code for this detail when the note documents it.

  • Use additional code to identify pneumonia or other manifestations.
  • Use additional code (U82-U84) to identify resistance to antimicrobial drugs.From J09-J18 Influenza and pneumonia

Excludes

Conditions classified elsewhere.

  • Haemophilus influenzae [H. influenzae]:• infection NOS (A49.2)• meningitis (G00.0)• pneumonia (J14)influenza due to identified seasonal influenza virus (J10.-)
  • Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 10: Diseases of the respiratory system (J00-J99)

Note

  • For use of this category, reference should be made to the guidelines of the Global Influenza Programme (GIP, http://www.who.int/ influenza/) of WHO.Influenza caused by influenza virus strains of special epidemiological importance with an animal-human or inter-human transmission.
  • Coding direction for DAD and NACRS Updated direction: Avian influenza A (any subtype or subtype not specified) is classified to J09 Influenza due to identified zoonotic or pandemic influenza virus. All other identified influenza virus strains are classified to J10.– Influenza due to identified seasonal influenza virus. Please disregard previous direction to classify influenza A (only subtype H5N1) to J09 Influenza due to identified zoonotic or pandemic influenza virus. Zoonotic influenza viruses are influenza type A viruses that are transmitted from animals to humans; they are rarely transmitted from one human to another. Zoonotic influenza is also known as non-seasonal influenza, as it may be transmitted at any time of the year when people are exposed to animal influenza viruses. Seasonal influenza viruses are those that have adapted to humans; they are strains of influenza virus types A and B that cause respiratory illnesses in humans annually. Seasonal influenza spreads between humans and can cause mild to severe illnesses. Seasonal influenza virus strains are classified to J10.– Influenza due to identified seasonal influenza virus. To determine the current status of influenza viruses — that is, whether they are seasonal or non-seasonal — refer to the Global Influenza Programme web page from the World Health Organization (WHO).
  • When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g., tracheobronchitis to bronchitis in J40).From Chapter 10: Diseases of the respiratory system (J00-J99)

Where J09 sits

  1. 1ChapterChapter 10: Diseases of the respiratory system (J00-J99)
  2. 2Block J09-J18Influenza and pneumonia
  3. 3Valid code J09Influenza due to identified zoonotic or pandemic influenza virus

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See J09 in the CIHI source

Frequently asked questions

What does ICD-10-CA code J09 mean?

J09 is the ICD-10-CA code for “Influenza due to identified zoonotic or pandemic influenza virus” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is J09 in ICD-10-CA?

J09 sits under J09-J18 Influenza and pneumonia, within Chapter 10: Diseases of the respiratory system (J00-J99).

What coding notes apply to J09?

ICD-10-CA lists Note, Use additional code, Excludes notes for J09, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside J09

J10Influenza due to identified seasonal influenza virusJ11Influenza, virus not identifiedJ12Viral pneumonia, not elsewhere classifiedJ13Pneumonia due to Streptococcus pneumoniaeJ14Pneumonia due to Haemophilus influenzaeJ15Bacterial pneumonia, not elsewhere classifiedJ16Pneumonia due to other infectious organisms, not elsewhere classifiedJ17Pneumonia in diseases classified elsewhereJ18Pneumonia, organism unspecified