A patient is admitted with community-acquired pneumonia.

This patient has sepsis with documented acute organ dysfunction, specifically acute respiratory failure and acute renal failure. Under ICD-10-CM coding guidance, sepsis associated with acute organ dysfunction is classified as severe sepsis when the provider establishes the relationship between the systemic infection and the organ dysfunction.

The documentation specifically states that respiratory failure and acute renal failure are secondary to sepsis caused by pneumonia. That causal linkage is critical. FY 2026 Official Guidelines require the underlying systemic infection code, followed by a code from R65.2- for severe sepsis, plus additional codes identifying each associated acute organ dysfunction.

Septic shock is not supported because the scenario does not document circulatory failure attributable to sepsis, persistent hypotension requiring vasopressors, or a provider diagnosis of septic shock. “Septicemia” is also not equivalent terminology for coding sepsis and is not the appropriate classification here.

From a CDI perspective, the defining feature is not simply that the patient is critically ill. It is the documented relationship between sepsis and acute organ dysfunction.

CCDS Reference Topics: Sepsis; severe sepsis; acute organ dysfunction; sequencing guidelines.

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