| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Gastroduodenoscope, device | Is a | True | Gastroscope, device | Inferred relationship | Existential restriction modifier |  | 
| Gastroscopy - via stoma | Access instrument | False | Gastroscope, device | Inferred relationship | Existential restriction modifier |  | 
| Gastroscopy - direct | Access instrument | False | Gastroscope, device | Inferred relationship | Existential restriction modifier |  | 
| Endoscopic biopsy of stomach | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic gastroscopy via stoma | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Jejunoscopy and insertion of tube prosthesis | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Endoscopic brush biopsy of stomach | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic Congo Red Test | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic brushings of gastrointestinal tract | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Percutaneous endoscopic insertion of gastrostomy tube | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Gastroduodenoscopy through artificial stoma | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Gastroduodenoscopy through artificial stoma | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Laparoscopic closure of perforated gastric ulcer | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic application of hemostyptics to gastric lesion | Using access device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic injection hemostasis of gastric ulcer | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Transabdominal gastroscopy | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic destruction of lesion of stomach | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Gastroscopy through artificial stoma | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Upper gastrointestinal endoscopy for directed placement of percutaneous gastrostomy tube | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Upper gastrointestinal endoscopy for directed placement of percutaneous gastrostomy tube | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Endoscopic excision of lesion of stomach | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic control of gastric bleeding | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Gastroduodenoscopy | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Gastroduodenoscopy | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Esophagogastroduodenoscopy | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Gastroscopy - via stoma | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Gastroscopy - direct | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Gastroscopy to remove object | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Temporary percutaneous endoscopic gastrostomy | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Permanent percutaneous endoscopic gastrostomy | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified other fiberoptic therapeutic endoscopic operation on upper gastrointestinal tract | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Other fiberoptic therapeutic endoscopic operation on upper gastrointestinal tract NOS | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Gastroscopy NEC | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Other therapeutic fiberoptic endoscopic operations on upper gastrointestinal tract | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic examination of esophagus, stomach and duodenum | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopy of stomach | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Esophagogastroscopy | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Esophagogastroscopy | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fiberoptic endoscopic percutaneous insertion of gastrostomy | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Endoscopic examination of esophagus, stomach and duodenum | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic Congo Red Test | Using access device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopy of stomach | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Other therapeutic fiberoptic endoscopic operations on upper gastrointestinal tract | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Gastroscopy through artificial stoma | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Gastroscopy - via stoma | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Jejunoscopy and insertion of tube prosthesis | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Other fiberoptic therapeutic endoscopic operation on upper gastrointestinal tract NOS | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified other fiberoptic therapeutic endoscopic operation on upper gastrointestinal tract | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Esophagogastroduodenoscopy | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Transabdominal gastroscopy | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic control of gastric bleeding | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic biopsy of stomach | Using access device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic gastroscopy via stoma | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Gastroscopy - direct | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Gastroscopy to remove object | Using access device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Upper gastrointestinal endoscopy for directed placement of percutaneous gastrostomy tube | Using access device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Laparoscopic closure of perforated gastric ulcer | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic injection hemostasis of gastric ulcer | Using access device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Upper gastrointestinal endoscopy for directed placement of percutaneous gastrostomy tube | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Gastroscopy NEC | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic destruction of lesion of stomach | Using access device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Endoscopic application of hemostyptics to gastric lesion | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Percutaneous endoscopic insertion of gastrostomy tube | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fiberoptic endoscopic percutaneous insertion of gastrostomy | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Temporary percutaneous endoscopic gastrostomy | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Permanent percutaneous endoscopic gastrostomy | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Temporary percutaneous endoscopic gastrostomy | Using access device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Percutaneous endoscopic insertion of gastrostomy tube | Using access device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fiberoptic endoscopic percutaneous insertion of gastrostomy | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Diagnostic gastroscopy via stoma | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Permanent percutaneous endoscopic gastrostomy | Using access device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic gastroscopy via stoma | Using device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Endoscopic control of gastric bleeding | Using access device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Endoscopic control of gastric bleeding using thermocoagulation | Using access device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Flexible video gastroscope | Is a | True | Gastroscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic gastroscope | Is a | True | Gastroscope, device | Inferred relationship | Existential restriction modifier |  | 
| Esophagogastroduodenoscopy gastric outlet reduction | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 3 | 
| Esophagogastroduodenoscopy gastric outlet reduction | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 4 | 
| Esophagogastroduodenoscopy through stoma | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 3 | 
| Esophagogastroduodenoscopy with insertion of guide wire and dilation of esophagus | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 4 | 
| Esophagogastroduodenoscopy and fecal microbiota transplant | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 4 | 
| Esophagogastroduodenoscopy | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 3 | 
| Operative esophagogastroduodenoscopy | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 6 | 
| Operative esophagogastroduodenoscopy | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 3 | 
| Esophagogastroduodenoscopy with directed submucosal injection | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 4 | 
| Fiberoptic endoscopic examination of upper gastrointestinal tract and staining of gastric mucosa | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 4 | 
| Operative esophagogastroscopy | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Operative esophagogastroscopy | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Esophagogastroscopy through stoma | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Esophagogastroscopy through stoma | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Esophagogastroscopy via gastrotomy | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Esophagogastroscopy via gastrotomy | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Esophagogastroduodenoscopy with control of esophageal hemorrhage by injection | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 4 | 
| Esophagogastroduodenoscopy with control of hemorrhage of esophagus | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 3 | 
| Esophagogastroduodenoscopy with clipping for control of hemorrhage of esophagus | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 3 | 
| Esophagogastroduodenoscopy with control of hemorrhage of esophagus by thermocoagulation | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 3 | 
| Esophagogastroduodenoscopy with radiofrequency ablation of esophagus | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 3 | 
| Esophagogastroduodenoscopy and closure of fistula of duodenum | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 4 | 
| Esophagogastroduodenoscopic electrohydraulic lithotripsy of bezoar in stomach | Using device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 4 | 
| Endoscopic control of hemorrhage of stomach using argon plasma coagulation | Using access device | True | Gastroscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fibreoptic endoscopic percutaneous insertion of gastrostomy | Using access device | False | Gastroscope, device | Inferred relationship | Existential restriction modifier | 2 |