Table 2.

2016 WSES predictive factor for CBDS and risk class (modified from SAGE-AGES)

Predictive factor for choledocholithiasis
Very strong	Evidence of CBD stone at abdominal ultrasound
	Total serum bilirubin > 4 mg/dL
Strong	Common bile duct diameter > 6 mm (with gallbladder in situ)
	Bilirubin level 1.8 to 4 mg/dL
Moderate	Abnormal liver biochemical test other than bilirubin
	Age older than 55 years
	Clinical gallstone pancreatitis
Risk class for choledocholithiasis
High	Presence of any very strong
Low	No predictors present
Intermediate	All other patients