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J11 ICD-10-CA category: Influenza, virus not identified

J11 isn’t a code on its own. Choose one of the 3 codes beneath it, the one the documentation supports.

Official description

J11

Influenza, virus not identified

ICD-10-CA · Canada

Codes in J11

J11 isn’t a code on its own. Open the code that matches what the note documents.

J11.0Influenza with pneumonia, virus not identifiedJ11.1Influenza with other respiratory manifestations, virus not identifiedJ11.8Influenza with other manifestations, virus not identified

Notes for J11

As CIHI prints them, with any note J11 takes from the headings above it.

Includes

  • Influenza specific virus not stated to have been identifiedviral influenza specific virus not stated to have been identified

Use additional code

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

Excludes

Conditions classified elsewhere.

  • Haemophilus influenzae [H. influenzae]• infection NOS (A49.2)• meningitis (G00.0)• pneumonia (J14)
  • 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

  • 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 J11 sits

  1. 1ChapterChapter 10: Diseases of the respiratory system (J00-J99)
  2. 2Block J09-J18Influenza and pneumonia
  3. 3Category J11Influenza, virus not identified

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 J11 in the CIHI source

Frequently asked questions

Is J11 a valid ICD-10-CA code?

No. J11 (Influenza, virus not identified) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 3 codes; record the one the documentation supports.

Where is J11 in ICD-10-CA?

J11 sits under J09-J18 Influenza and pneumonia, within Chapter 10: Diseases of the respiratory system (J00-J99).

What coding notes apply to J11?

ICD-10-CA lists Includes, Excludes, Use additional code, Note notes for J11, 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 J11

J09Influenza due to identified zoonotic or pandemic influenza virusJ10Influenza due to identified seasonal influenza virusJ12Viral 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