Try for free

J18 ICD-10-CA category: Pneumonia, organism unspecified

J18 isn’t a code on its own. Choose one of the 5 codes beneath it, the one the documentation supports.

Official description

J18

Pneumonia, organism unspecified

ICD-10-CA · Canada

Codes in J18

J18 isn’t a code on its own. Open the code that matches what the note documents.

J18.0Bronchopneumonia, unspecifiedJ18.1Lobar pneumonia, unspecifiedJ18.2Hypostatic pneumonia, unspecifiedJ18.8Other pneumonia, organism unspecifiedJ18.9Pneumonia, unspecified

Notes for J18

As CIHI prints them, with any note J18 takes from the headings above it.

Use additional code

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

Excludes

Conditions classified elsewhere.

  • Abscess of lung with pneumonia (J85.1)drug-induced interstitial lung disorders (J70.2-J70.4)pneumonia:• aspiration (due to)• NOS (J69.0)• anaesthesia during• labour and delivery (O74.0-)• pregnancy (O29.0-)• puerperium (O89.0-)• neonatal (P24.9)• solids and liquids (J69.-)• congenital (P23.9)• interstitial NOS (J84.9)• lipid (J69.1)• usual interstitial (J84.1)pneumonitis, due to external agents (J67-J70)
  • 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 J18 sits

  1. 1ChapterChapter 10: Diseases of the respiratory system (J00-J99)
  2. 2Block J09-J18Influenza and pneumonia
  3. 3Category J18Pneumonia, organism unspecified

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 J18 in the CIHI source

Frequently asked questions

Is J18 a valid ICD-10-CA code?

No. J18 (Pneumonia, organism unspecified) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 5 codes; record the one the documentation supports.

Where is J18 in ICD-10-CA?

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

What coding notes apply to J18?

ICD-10-CA lists Excludes, Use additional code, Note notes for 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 J18

J09Influenza due to identified zoonotic or pandemic influenza virusJ10Influenza 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 elsewhere