ICD-10 Code A39.4 – Meningococcemia, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A39.4 – Meningococcemia, unspecified
What it is
A39.4 identifies meningococcal infection in the bloodstream when the specific form is not further specified. Use it for documented meningococcemia without a more precise subtype.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include acute systemic illness with fever, rash, or signs of sepsis, but you should code only what is explicitly documented.
When to use this code
Use A39.4 when the provider documents meningococcemia and does not specify another meningococcal manifestation. It is appropriate for confirmed or clinically diagnosed bloodstream infection due to Neisseria meningitidis when no more detailed code is given. Check documentation if the record also mentions meningitis, pneumonia, or another site.
Do not use for
Do not use this code for meningococcal meningitis, chronic meningococcemia, or other specified meningococcal infections. If the chart names a different manifestation, choose the more specific code.
Coding tip
Before assigning A39.4, verify that “unspecified” truly reflects the provider’s final diagnosis.