ICD-10-CM 2027
ICD-10 code for Pneumococcal pneumonia
Pneumonia due to Streptococcus pneumoniae
From the official ICD-10-CM alphabetic index entry “Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › pneumococcal (broncho) (lobar)”. Page updated September 29, 2026.
About coding Pneumococcal pneumonia
The ICD-10-CM code for Pneumococcal pneumonia is J13 (Pneumonia due to Streptococcus pneumoniae).
Don't report J13 together with the conditions in its Excludes1 note: congenital pneumonia due to S. pneumoniae (P23.6), lobar pneumonia, unspecified organism (J18.1) and pneumonia due to other streptococci (J15.3-J15.4).
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.
Don't confuse with (Excludes1 for J13)
Common questions about Pneumococcal pneumonia ICD-10 codes
What is the ICD-10 code for Pneumococcal pneumonia?
- J13 — Pneumonia due to Streptococcus pneumoniae.
Is J13 billable?
- Yes. J13 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J13 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J13 as a principal diagnosis.
Is J13 a CC or MCC?
- J13 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.