| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Cerebral ventriculography, positive contrast | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Ventriculoperitoneal shunt | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Ventriculocholecystostomy | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Removal of ventricular catheter with synchronous replacement | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Drainage of ventricle through previously implanted catheter | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Drainage of ventricle by aspiration | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Creation of subarachnoid/subdural-pleural shunt | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 3 | 
| Ventricular shunt to bone marrow | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Creation of subarachnoid/subdural-jugular shunt | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Ventriculostomy | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Take-down of cerebral ventricular shunt | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural-peritoneal shunt with valve | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Irrigation of ventricular shunt | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Ventriculocisternal intubation | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Shunt of cerebral ventricle to extracranial site | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Perinatal intraventricular hemorrhage | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Perinatal intraventricular hemorrhage | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Revision of cerebral ventricular shunt | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Irrigation of ventricular catheter | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cerebral ventricular shunt to venous system | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Cerebral ventriculography | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cerebral ventriculography | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Removal of cerebral ventricular reservoir, Ommaya or Rickham | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Ventricular shunt to circulatory system | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cerebrospinal fluid flow imaging, ventriculography | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cerebrospinal fluid flow imaging, ventriculography | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Replacement of cerebral ventricular valve | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Cerebral ventricular shunt to urinary system | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Implantation of Rickham reservoir | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cerebral ventricular to thoracic cavity shunt | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Benign neoplasm of cerebral ventricle | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Primary malignant neoplasm of cerebral ventricle | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Metastatic malignant neoplasm to cerebral ventricle | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Neoplasm of uncertain behavior of cerebral ventricle | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Removal of cerebral ventricular catheter | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier |  | 
| Malignant neoplasm of cerebral ventricles | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Maintenance of proximal catheter of cerebroventricular shunt | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 3 | 
| Maintenance of distal catheter of cerebroventricular shunt | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Endoscopic extirpation of lesion of ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Ventriculography of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Intraventricular (nontraumatic) hemorrhage, grade 1, of fetus and newborn | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Intraventricular (nontraumatic) hemorrhage, grade 1, of fetus and newborn | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Intraventricular (nontraumatic) hemorrhage, grade 2, of fetus and newborn | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Intraventricular (nontraumatic) hemorrhage, grade 2, of fetus and newborn | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Intraventricular (nontraumatic) hemorrhage, grade 3, of fetus and newborn | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Intraventricular (nontraumatic) hemorrhage, grade 3, of fetus and newborn | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Intraventricular hemorrhage due to birth injury | Finding site | True | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Intraventricular hemorrhage due to birth injury | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Ventriculocaval shunt with valve | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Attention to component of connection from ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Therapeutic endoscopic operations on ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Contrast ventriculography of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Pneumoventriculography | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Reinsertion of holter valve into brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 3 | 
| Extracranial ventricular shunt removed | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Cranial ventriculostomy | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Ventriculopuncture of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Reinsertion of cerebral ventricular valve | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier |  | 
| Other specified creation of connection from ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Creation of connection from ventricle of brain NOS | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Conversion of cerebroventricular shunt NEC | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Attention to ventriculoperitoneal shunt NOS | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Attention to ventriculopleural shunt NOS | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified attention to component of connection from ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 3 | 
| Attention to component of connection from ventricle of brain NOS | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other operations on connection from ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Attention to cerebroventricular shunt NEC | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified other operation on connection from ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other operation on connection from ventricle of brain NOS | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other open operations on ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Open drainage of ventricle of brain NEC | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified other open operation on ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other open operation on ventricle of brain NOS | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified therapeutic endoscopic operation on ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Therapeutic endoscopic operation on ventricle of brain NOS | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified diagnostic endoscopic examination of ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other operations on ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified other operation on ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other operation on ventricle of brain NOS | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Ventricular shunt to nasopharynx | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Malignant neoplasm of cerebral ventricle NOS | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Revision of cerebroventricular shunt NEC | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic endoscopic examination of ventricle of brain NOS | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Drainage of ventricle of brain NEC | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Extracranial ventricular shunt NOS | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cerebrospinal fluid flow imaging, ventriculography | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 4 | 
| Cerebral ventriculography | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 5 | 
| Cerebral ventriculography, air contrast | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 5 | 
| Cerebral ventriculography, positive contrast | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 4 | 
| Change of distal catheter site of ventricular shunt | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Aspiration of cerebroventricular shunt | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic endoscopic examination of ventricle of brain and biopsy of lesion of ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 3 | 
| Brain ventricular shunt infection | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brain ventricular shunt displacement | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brain ventricular shunt obstruction | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection of antibiotic into ventricle of brain | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Percutaneous insertion of ventriculoamniotic shunt | Procedure site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier |  | 
| Disorder of brain ventricular shunt | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 2 | 
| Ventriculoperitoneal shunt-associated peritonitis | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier |  | 
| Brain ventricular shunt malfunction | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 1 | 
| Mechanical complication of ventricular communicating shunt | Finding site | False | Brain ventricle structure | Inferred relationship | Existential restriction modifier | 3 |