Meningococcemia

This code represents a severe systemic infection caused by Neisseria meningitidis, characterized by the presence of meningococci in the bloodstream. It is a life-threatening condition that can lead to septic shock, disseminated intravascular coagulation (DIC), and multi-organ failure, often without meningitis.

Use this code when documentation clearly indicates a diagnosis of meningococcemia, supported by positive blood cultures for N. meningitidis or clinical signs of sepsis with a high index of suspicion for meningococcal disease. This code is appropriate for patients presenting with purpuric rash, fever, hypotension, and other signs of severe sepsis due to meningococcal infection.

• Always sequence this code as the principal diagnosis when it is the primary reason for the encounter and treatment.
• Do not confuse this with meningococcal meningitis (320.0), although they can co-occur. Code both if documented.
• Look for documentation of associated complications such as septic shock (995.92), DIC (286.6), or adrenal hemorrhage (255.4) and code them appropriately.