ICD-10-CM 2027
ICD-10 code for passive pneumonia
From the official ICD-10-CM alphabetic index entry “Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › passive”. Page updated September 29, 2026.
About coding passive pneumonia
The ICD-10-CM code for passive pneumonia is J18.2 (Hypostatic pneumonia, unspecified organism).
Within J18, choose J18.2 (Hypostatic pneumonia, unspecified organism) only when documentation doesn't support a more specific option: Bronchopneumonia, unspecified organism (J18.0), Lobar pneumonia, unspecified organism (J18.1), other pneumonia, unspecified organism (J18.8) and pneumonia, unspecified organism (J18.9).
Code first: , if applicable, associated influenza (J09.X1, J10.0-, J11.0-).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
Common questions about passive pneumonia ICD-10 codes
What is the ICD-10 code for passive pneumonia?
- J18.2 — Hypostatic pneumonia, unspecified organism.
Is J18.2 billable?
- Yes. J18.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J18.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J18.2 as a principal diagnosis.
Is J18.2 a CC or MCC?
- J18.2 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.