ICD-10-CM 2027
ICD-10 code for proteus pneumonia
Pneumonia due to other Gram-negative bacteria
From the official ICD-10-CM alphabetic index entry “Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › Proteus”. Page updated September 29, 2026.
About coding proteus pneumonia
The ICD-10-CM code for proteus pneumonia is J15.69 (Pneumonia due to other Gram-negative bacteria).
Within J15.6, choose J15.69 (other Gram-negative bacteria) only when documentation doesn't support a more specific option: Acinetobacter baumannii (J15.61).
Code first: , if applicable, associated influenza (J09.X1, J10.0-, J11.0-).
As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.
Common questions about proteus pneumonia ICD-10 codes
What is the ICD-10 code for proteus pneumonia?
- J15.69 — Pneumonia due to other Gram-negative bacteria.
Is J15.69 billable?
- Yes. J15.69 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J15.69 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J15.69 as a principal diagnosis.
Is J15.69 a CC or MCC?
- J15.69 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.