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B16: Aspiration Pneumonia


Inflammation and infection of the lungs caused by aspiration of solids or liquids during a hospital stay.


  1. When both aspiration pneumonitis and pneumonia are coded on the same abstract, the event will be included in this clinical group only.
  2. This clinical group may include inflammation due to aspiration in the absence of infection.
  3. Aspiration pneumonia due to methicillin-resistant Staphylococcus aureus (MRSA) or vancomycin-resistant enterococci (VRE) can also be included in B18: Infections Due to Clostridium difficile, MRSA or VRE.

Selection criteria



Identified as diagnosis type (2)


Identified as diagnosis type (3) AND J95.88 (other post-procedural respiratory disorders) as diagnosis type (2) AND Y60–Y84 (complications of medical or surgical procedures)*  in the same diagnosis cluster

Excludes: Abstracts with a length of stay less than 2 days


Code descriptions


Pneumonitis due to solids and liquids

Additional codes



Other post procedural respiratory disorders

Includes: Ventilator associated pneumonia (VAP)

 * For the descriptions of external cause codes of complications of medical or surgical care (Y60–Y84), see Appendix 2 of the Measuring Patient Harm in Canadian Hospitals: Technical Report.