J15 Bacterial pneumonia, not elsewhere classified

Category / Non-billable header 17 subcodes

Block: Influenza and pneumonia (J09-J18)

Includes

  • bronchopneumonia due to bacteria other than S. pneumoniae and H. influenzae

Excludes 1 (cannot be coded together)

  • chlamydial pneumonia (J16.0)
  • congenital pneumonia (P23.-)
  • Legionnaires' disease (A48.1)
  • spirochetal pneumonia (A69.8)

Code Also

  • , if applicable, any associated condition such as:
  • abscess (J85.1)
  • aspiration pneumonia (J69.-)

Code First

  • , if applicable, associated influenza (J09.X1, J10.0-, J11.0-)

Subcodes

Each subcode links to a detail page with full clinical annotations.

Code Description Billable
J15..0 Pneumonia due to Klebsiella pneumoniae Yes
J15..1 Pneumonia due to Pseudomonas Yes
J15..2 Pneumonia due to staphylococcus No
J15..20 Pneumonia due to staphylococcus, unspecified Yes
J15..21 Pneumonia due to staphylococcus aureus No
J15..211 Pneumonia due to Methicillin susceptible Staphylococcus aureus Yes
J15..212 Pneumonia due to Methicillin resistant Staphylococcus aureus Yes
J15..29 Pneumonia due to other staphylococcus Yes
J15..3 Pneumonia due to streptococcus, group B Yes
J15..4 Pneumonia due to other streptococci Yes
J15..5 Pneumonia due to Escherichia coli Yes
J15..6 Pneumonia due to other Gram-negative bacteria No
J15..61 Pneumonia due to Acinetobacter baumannii Yes
J15..69 Pneumonia due to other Gram-negative bacteria Yes
J15..7 Pneumonia due to Mycoplasma pneumoniae Yes
J15..8 Pneumonia due to other specified bacteria Yes
J15..9 Unspecified bacterial pneumonia Yes

Last reviewed: September 2026