ICD-10-CM 2027
ICD-10 code for Pneumococcemia
Sepsis due to Streptococcus pneumoniae
From the official ICD-10-CM alphabetic index entry “Pneumococcemia”. Page updated September 29, 2026.
About coding Pneumococcemia
The ICD-10-CM code for Pneumococcemia is A40.3 (Sepsis due to Streptococcus pneumoniae).
Within A40 (streptococcal sepsis), A40.3 is specifically for sepsis due to Streptococcus pneumoniae. Related codes cover sepsis due to streptococcus, group A (A40.0), sepsis due to streptococcus, group B (A40.1), other streptococcal sepsis (A40.8) and unspecified (A40.9).
Code first: , if applicable, postprocedural sepsis (T81.44-), sepsis due to central venous catheter (T80.211-), streptococcal sepsis during labor (O75.3), streptococcal sepsis following abortion or ectopic or molar pregnancy (O03.37, O03.87, O04.87, O07.37, O08.82) and 2 more.
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 Pneumococcemia ICD-10 codes
What is the ICD-10 code for Pneumococcemia?
- A40.3 — Sepsis due to Streptococcus pneumoniae.
Is A40.3 billable?
- Yes. A40.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A40.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A40.3 as a principal diagnosis.
Is A40.3 a CC or MCC?
- A40.3 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.