Table 6.

Category of endoscopic procedures[13,62]

Emergent endoscopy	Urgent endoscopy	Elective endoscopy
Ascending/acute cholangitis; Foreign body retrieval; GI obstruction; Life-threatening GI bleeding	Cancer staging; Stable GI bleeding; Tumor biopsy; Palliative procedures (stenting, neurolysis); Planned EMR/ESD for complex/high-risk lesions	Biliary stent removal; Clinical trials; Colorectal cancer screening; Percutaneous endoscopic gastrostomy; Post-polypectomy surveillance; Surveillance/follow-up endoscopy (excluding high-risk neoplasia)

GI: Gastrointestinal; EMR: Endoscopic mucosal resection; ESD: Endoscopic submucosal dissection.