J15
ICD-10Non-billable categoryBacterial pneumonia, not elsewhere classified
Official ICD-10-CM descriptor (FY2026)
Bacterial pneumonia, not elsewhere classified
J15 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- bronchopneumonia due to bacteria other than S. pneumoniae and H. influenzae
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- chlamydial pneumonia (J16.0)
- congenital pneumonia (P23.-)
- Legionnaires' disease (A48.1)
- spirochetal pneumonia (A69.8)
Code first
Sequence the underlying condition before this code.
- , if applicable, associated influenza (J09.X1, J10.0-, J11.0-)
Code also
Two codes may be needed; sequencing depends on the reason for the encounter.
- , if applicable, any associated condition such as:
- abscess (J85.1)
- aspiration pneumonia (J69.-)
More specific codes under J15
- J15.0Pneumonia due to Klebsiella pneumoniae
- J15.1Pneumonia due to Pseudomonas
- J15.2Pneumonia due to staphylococcuscategory
- J15.3Pneumonia due to streptococcus, group B
- J15.4Pneumonia due to other streptococci
- J15.5Pneumonia due to Escherichia coli
- J15.6Pneumonia due to other Gram-negative bacteriacategory
- J15.7Pneumonia due to Mycoplasma pneumoniae
- J15.8Pneumonia due to other specified bacteria
- J15.9Unspecified bacterial pneumonia
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.