Degrees of difficulty based on Schutz's classification15
| Difficulty degree | Biliary procedures | Pancreatic procedures |
|---|---|---|
| Grade 1 | ▸ Diagnostic cholangiography ▸ Biliary cytology ▸ Stone extraction ≤10 mm ▸ Dilatation of stenosis/stent placement/nasobiliary drain in extrahepatic strictures | ▸ Diagnostic pancreatography ▸ Pancreatic cytology |
| Grade 2 | ▸ Stone extraction >10 mm ▸ Dilatation of stenosis/stent placement/nasobiliary drain in hilar tumours or benign intrahepatic strictures | ▸ Cannulation of papilla minor |
| Grade 3 | ▸ BII anatomy ▸ Intrahepatic stone extraction ▸ Stone extraction with lithotrypsy | ▸ Therapeutic pancreatic procedures, including pseudocyst drainage |