Obesity and Work in Abdominal Surgery

Area of Science:

• Surgical outcomes research
• Health services research
• Patient risk stratification

Background:

• Current reimbursement models, like Modifier 22, do not adequately compensate surgeons for complex patient care.
• Obesity is a prevalent and growing risk factor that can be leveraged to identify patients requiring additional surgical work.
• Equitable financial systems are needed to ensure access to care for all patients, particularly those with increased needs.

Purpose of the Study:

• To evaluate the impact of obesity on operative time and complication rates in general surgery.
• To assess the potential of Body Mass Index (BMI) categories as a reliable indicator for increased surgical work.
• To inform the development of new reimbursement strategies for complex surgical cases.

Main Methods:

• Analysis of 2022 American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) data.
• Inclusion of 10 common general surgery procedures (e.g., appendectomy, cholecystectomy, hernia repair).
• Stratification of patients into BMI categories from normal weight to extreme obesity, with operative time and complication rates as primary outcomes.

Main Results:

• Over 158,000 operations were analyzed, with 76.3% of patients being overweight or obese.
• Operative time increased progressively with BMI, ranging from 5.6% for overweight to 26.8% for extreme obesity compared to normal BMI.
• Obesity correlated with higher odds of complications, particularly wound complications, pulmonary emboli, and renal insufficiency.

Conclusions:

• Obesity is a significant factor in general surgery, leading to longer operative times and increased complication risks.
• The consistent, dose-dependent relationship between obesity and surgical complexity supports its use for identifying cases requiring additional work.
• Developing specific modifiers or add-on codes for obesity could improve reimbursement accuracy and ensure equitable patient care.