ICD-10 Code J15.4 – Pneumonia due to other streptococci (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J15.4 – Pneumonia due to other streptococci
What it is
J15.4 identifies pneumonia caused by streptococcal species other than Streptococcus pneumoniae. Use it when documentation names another streptococcal organism as the cause of the lung infection.
Clinical signs
Typical findings include cough, fever, shortness of breath, chest discomfort, and abnormal lung exam results. Imaging usually supports pneumonia; if the organism is not clearly documented, check documentation.
When to use this code
Use this code when the provider documents pneumonia due to a named non-pneumococcal streptococcus, such as another streptococcal species. It also applies when the record links the pneumonia directly to that organism. If the organism is unspecified, do not assume J15.4.
Do not use for
Do not use J15.4 for pneumococcal pneumonia or for pneumonia caused by organisms other than streptococci. If the chart only says “bacterial pneumonia” or gives no organism, check documentation.
Coding tip
Assign J15.4 only when the provider clearly identifies a non-pneumococcal streptococcal cause in the diagnosis.