| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Fiberoptic esophagoscopy and biopsy | Using | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Diagnostic fiberoptic esophagoscopy via stoma | Using | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Diagnostic flexible fiberoptic esophagoscopy | Using | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Reduction of retroversion of uterus by pessary | Using | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Tracheobronchial catheter aspiration with fiberscope, bedside | Using | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Fiberoptic bronchoscopy | Using | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Fiberoptic bronchoscopy with biopsy of bronchus | Using | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Other specified diagnostic fiberoptic endoscopic examination of esophagus | Using | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Diagnostic fiberoptic endoscopic examination of esophagus NOS | Using | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Diagnostic fiberoptic tracheoscopy | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Other specified diagnostic fiberoptic endoscopic examination of trachea | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Diagnostic fiberoptic endoscopic examination of trachea NOS | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Diagnostic fiberoptic bronchoscopy | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Other specified diagnostic fiberoptic bronchoscopy | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Fiberoptic esophagoscopy and biopsy | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Diagnostic fiberoptic esophagoscopy via stoma | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Other specified diagnostic fiberoptic endoscopic examination of esophagus | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Fiberoptic endoscopic snare resection of lesion of upper gastrointestinal tract | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Diagnostic fiberoptic bronchoscopy NOS | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Diagnostic fiberoptic endoscopic examination of esophagus NOS | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Diagnostic fiberoptic endoscopic examination of larynx | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Fiberoptic esophagogastroduodenoscopy | Direct device | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Diagnostic flexible fiberoptic esophagoscopy | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Reduction of retroversion of uterus by pessary | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Fiberoptic ileoscopy through stoma | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Tracheobronchial catheter aspiration with fiberscope, bedside | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fiberoptic ileoscopy through stoma with biopsy | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Fiberoptic bronchoscopy | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Fiberoptic bronchoscopy with biopsy of bronchus | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Fiberoptic esophagogastroduodenoscopy | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic sigmoidoscopy with biopsy | Using | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Fiberoptic bronchoscopic lavage of bronchus | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Bronchial suction via fiberoptic bronchoscope | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Flexible fiberoptic bronchoscopy | Access instrument | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Diagnostic fiberoptic endoscopic examination of lower respiratory tract and lavage of lesion of lower respiratory tract | Using device | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic fiberoptic endoscopic examination of lower respiratory tract with biopsy lavage and brush cytology of lesion of lower respiratory tract | Using device | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic fiberoptic endoscopic examination of lower respiratory tract and brush cytology of lesion of lower respiratory tract | Using device | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic fiberoptic endoscopic examination of lower respiratory tract and brush cytology of lesion of lower respiratory tract | Using access device | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Diagnostic fiberoptic endoscopic examination of lower respiratory tract and lavage of lesion of lower respiratory tract | Using access device | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Diagnostic fiberoptic endoscopic examination of lower respiratory tract with biopsy lavage and brush cytology of lesion of lower respiratory tract | Using access device | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Diagnostic fiberoptic endoscopic examination of lower respiratory tract and brush cytology of lesion of lower respiratory tract | Using access device | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Falloposcopy | Using device | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Falloposcopy | Using device | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Flexible fiberoptic lacrimal endoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic stomatoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic mammary ductoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic cystonephroscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic gastroscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic nasopharyngoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic arthroscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic urethroscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic ophthalmic endoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic colonoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic sinoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic laryngoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic nephroscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic gastroduodenoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic mediastinoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic thoracoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic rhinoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic antroscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic cystoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic hysteroscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic otoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic arterioscope, single-use | Is a | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic reconstructive surgery endoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic ureteroscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic lumbarscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic salpingoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic angioscope, reusable | Is a | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic ureterorenoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic neuroscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic laparoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic pancreatoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic choledochoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic sigmoidoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic culdoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic nasopharyngolaryngoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic epiduroscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic bronchoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic angioscope, single-use | Is a | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic arterioscope, reusable | Is a | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic esophagoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic cystourethroscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic pharyngoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic duodenoscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic myeloscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Fiberoptic endoscopic coagulation of hemorrhage of esophagus | Using access device | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fiberoptic endoscopic coagulation of hemorrhage of upper gastrointestinal tract | Using access device | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fiberoptic endoscopic excision of lesion of mucous membrane of esophagus | Using access device | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fiberoptic endoscopic excision of lesion of colonic mucous membrane | Using access device | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fiberoptic endoscopic excision of lesion of mucous membrane of upper gastrointestinal tract | Using access device | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Flexible fiberoptic angioscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Flexible fiberoptic arterioscope | Is a | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier |  | 
| Diagnostic flexible fiberoptic esophagoscopy | Using device | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Flexible fiberoptic esophagoscopy | Using device | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fiberoptic endoscopic coagulation of hemorrhage of esophagus using hemostatic spray | Using access device | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fiberoptic endoscopic coagulation of hemorrhage of upper gastrointestinal tract using hemostatic spray | Using access device | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fiberoptic endoscopic coagulation of hemorrhage of upper gastrointestinal tract using hemostatic spray (procedure) | Using access device | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fiberoptic endoscopic coagulation of hemorrhage of esophagus using hemostatic spray (procedure) | Using access device | False | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 2 | 
| Fibreoptic endoscopic balloon dilation of ileoanal J shaped pouch (procedure) | Using access device | True | Flexible fiberoptic endoscope, device | Inferred relationship | Existential restriction modifier | 1 |