High-Risk Surcharges in Open Heart Surgery: Factors and Financial Impact

Cardiac surgery programs apply risk-adjusted pricing for patients with elevated complication probability. The surcharge covers incremental resource use.

Common Risk Factors Triggering Surcharge

• Age >70 (or >65 with frailty)
• BMI >40 or <18.5
• Diabetes (especially insulin-dependent)
• Renal dysfunction (Cr >1.5, dialysis)
• COPD / pulmonary hypertension
• Prior cardiac surgery (redo sternotomy)
• Active endocarditis
• Emergency/salvage status
• Low EF (<30%), cardiogenic shock, IABP/ECMO
• Liver disease, cirrhosis
• Immunosuppression, active cancer

Cost Impact

• Longer ICU/ventilator days
• More blood products, vasoactives, antibiotics
• Higher reoperation, readmission rates
• Extended total LOS (14–30+ days vs. 5–7)

Transparency

Hospitals should disclose risk model (STS/EuroSCORE), surcharge amount, and payment options preoperatively. Patients can seek financial counseling, charity care, or second opinion at center with different risk stratification.