Clinical Scorecard: Inaccurate Classification of Sepsis Utilizing ICD-10 Codes A00–B99 in the Research

At a Glance

Key Highlights

• ICD-10 codes A00–B99 cover a broad range of infectious diseases but do not specifically identify sepsis.
• True sepsis identification requires specific ICD-10 codes (e.g., R65.20, A41.9) combined with organ dysfunction markers.
• Misclassification of sepsis by using broad infection codes can dilute associations and threaten study validity.

Guideline-Based Recommendations

Diagnosis

• Use validated sepsis identification algorithms such as Angus criteria adapted for ICD-10.
• Identify sepsis with explicit ICD-10 codes like R65.x combined with organ dysfunction proxies.

Management

• Recognize sepsis as a distinct clinical syndrome requiring targeted interventions beyond treatment of infection alone.

Monitoring & Follow-up

• Monitor for organ dysfunction markers (e.g., vasopressor use, mechanical ventilation, elevated lactate, acute kidney injury) to confirm sepsis.

Risks

• Overgeneralizing infection codes as sepsis risks misclassification bias and inaccurate epidemiological conclusions.

Patient & Prescribing Data

Patients with type 2 diabetes and infections studied for sepsis-induced cardiomyopathy risk.

Accurate sepsis classification is essential to correctly assess the cardioprotective effects of SGLT2 inhibitors.

Clinical Best Practices

• Avoid equating broad infection ICD-10 codes (A00–B99) with sepsis in research.
• Incorporate organ dysfunction criteria when defining sepsis in administrative data.
• Clearly state limitations of sepsis definitions used in observational studies to inform interpretation.

References

• Wu et al. study on SGLT2 inhibitors and sepsis-induced cardiomyopathy
• Sepsis-3 consensus definitions
• Prior studies reporting sepsis-induced cardiomyopathy incidence