ICD-10-CM 2027
ICD-10 code for MSSA pneumonia
Pneumonia due to Methicillin susceptible Staphylococcus aureus
From the official ICD-10-CM alphabetic index entry “Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › MSSA (methicillin susceptible Staphylococcus aureus)”. Page updated September 29, 2026.
About coding MSSA pneumonia
The ICD-10-CM code for MSSA pneumonia is J15.211 (Pneumonia due to Methicillin susceptible Staphylococcus aureus).
Within J15.21 (pneumonia due to staphylococcus aureus), J15.211 is specifically for pneumonia due to Methicillin susceptible Staphylococcus aureus. Related codes cover resistant Staphylococcus aureus (J15.212).
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 MSSA pneumonia ICD-10 codes
What is the ICD-10 code for MSSA pneumonia?
- J15.211 — Pneumonia due to Methicillin susceptible Staphylococcus aureus.
Is J15.211 billable?
- Yes. J15.211 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J15.211 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J15.211 as a principal diagnosis.
Is J15.211 a CC or MCC?
- J15.211 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.