J09-J18 ICD-10-CA block: Influenza and pneumonia
J09-J18 isn’t a code on its own. Choose one of the 37 codes beneath it, the one the documentation supports.
Official description
J09-J18Influenza and pneumonia (J09-J18)
ICD-10-CA · Canada
Codes in J09-J18
J09-J18 isn’t a code on its own. Open the group that matches what the note documents.
J09Influenza due to identified zoonotic or pandemic influenza virusJ10Influenza due to identified seasonal influenza virus (3 codes)J11Influenza, virus not identified (3 codes)J12Viral pneumonia, not elsewhere classified (6 codes)J13Pneumonia due to Streptococcus pneumoniaeJ14Pneumonia due to Haemophilus influenzaeJ15Bacterial pneumonia, not elsewhere classified (10 codes)J16Pneumonia due to other infectious organisms, not elsewhere classified (2 codes)J17Pneumonia in diseases classified elsewhere (5 codes)J18Pneumonia, organism unspecified (5 codes)Notes for J09-J18
As CIHI prints them, with any note J09-J18 takes from the headings above it.
Use additional code
Add a code for this detail when the note documents it.
- Use additional code (U82-U84) to identify resistance to antimicrobial drugs.
Excludes
Conditions classified elsewhere.
- 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 J09-J18 sits
- 1ChapterChapter 10: Diseases of the respiratory system (J00-J99)
- 2Block J09-J18Influenza and pneumonia
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.
Frequently asked questions
Is J09-J18 a valid ICD-10-CA code?
No. J09-J18 (Influenza and pneumonia) is a block heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 37 codes; record the one the documentation supports.
Where is J09-J18 in ICD-10-CA?
J09-J18 sits under Chapter 10: Diseases of the respiratory system (J00-J99).
What coding notes apply to J09-J18?
ICD-10-CA lists Use additional code, Note, Excludes notes for J09-J18, 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-J18
J00-J06Acute upper respiratory infectionsJ20-J22Other acute lower respiratory infectionsJ30-J39Other diseases of upper respiratory tractJ40-J47Chronic lower respiratory diseasesJ60-J70Lung diseases due to external agentsJ80-J84Other respiratory diseases principally affecting the interstitiumJ85-J86Suppurative and necrotic conditions of lower respiratory tractJ90-J94Other diseases of pleuraJ95-J99Other diseases of the respiratory system