This tool supports structured infectious-disease decision making but does not replace clinician judgement or local guideline pathways.
This OpiCalc infectious-disease entry reflects commonly used guideline criteria and bedside risk features used in contemporary clinical practice.
C. difficile Severity & Recurrence: Severity and recurrence risk factors helping determine escalation in C. difficile infection.
WBC ≥15,000/µL
+2 Points
Creatinine >1.5 mg/dL or AKI
Ileus, megacolon, or shock
+3 Points
Age ≥65 years
+1 Points
Prior CDI episode
Severe immunocompromise
Assessment Tier
Score 0
Profile is more consistent with non-severe CDI.