ICD-10-CM 2027
ICD-10 code for acute meningococcemia
From the official ICD-10-CM alphabetic index entry “Meningococcemia › acute”. Page updated September 29, 2026.
About coding acute meningococcemia
The ICD-10-CM code for acute meningococcemia is A39.2 (Acute meningococcemia).
Within A39 (meningococcal infection), A39.2 is specifically for acute meningococcemia. Related codes cover meningococcal meningitis (A39.0), Waterhouse-Friderichsen syndrome (A39.1), chronic meningococcemia (A39.3), meningococcemia, unspecified (A39.4), meningococcal heart disease (A39.5), other meningococcal infections (A39.8) and unspecified (A39.9).
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.
In MS-DRG v44.0, it is part of the grouping logic for DRG 870 (Septicemia or Severe Sepsis with MV >96 Hours, relative weight 6.9408), DRG 871 (Septicemia or Severe Sepsis without MV >96 Hours with MCC, relative weight 1.932) and DRG 872 (Septicemia or Severe Sepsis without MV >96 Hours without MCC, relative weight 1.0066), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about acute meningococcemia ICD-10 codes
What is the ICD-10 code for acute meningococcemia?
- A39.2 — Acute meningococcemia.
Is A39.2 billable?
- Yes. A39.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can A39.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict A39.2 as a principal diagnosis.
Is A39.2 a CC or MCC?
- A39.2 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.