Procedure complexity matrix
| Procedure risk level | Low risk | Medium risk | High risk |
| Procedure | OGD Flexible sigmoidoscopy Polyp <1 cm | OGD Flexible sigmoidoscopy Polypectomy >1 cm <2 cm or multiple polypectomy Colonoscopy Polypectomy >1 cm <2 cm EUS FNA Argon plasma coagulation Enteroscopy PEG | GI bleed Dilatation Therapeutic OGD Variceal banding EMR ESD ERCP/Spyglass© GA PEXACT© Polypectomy >2 cm or multiple polypectomy |
EMR, endoscopic mucosal resection; ERCP, endoscopic retrograde cholangiopancreatography; ESD, endoscopic submucosal dissection; FNA, fine needle aspiration; GA, general anaesthetic; GI, gastrointestinal; OGD, oesophagogastroduodenoscopy; PEG, percutaneous endoscopic gastrostomy.