| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Acute and subacute hemorrhagic leukoencephalitis [Hurst] | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Encephalitis caused by influenza | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Encephalitis caused by influenza-virus identified | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Encephalitis caused by influenza-specific virus not identified | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Mosquito-borne viral encephalitis NOS | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other tick-borne viral encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other tick-borne viral encephalitis NOS | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Tick-borne viral encephalitis NOS | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| [X]Other mosquito-borne viral encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| [X]Mosquito-borne viral encephalitis, unspecified | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| [X]Other tick-borne viral encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| [X]Tick-borne viral encephalitis, unspecified | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| [X]Other specified viral encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| [X]Unspecified viral encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Encephalitis in viral disease NOS | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Encephalitis due to protozoa EC NOS | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Encephalitis due to other infection EC | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Encephalitis due to syphilis unspecified | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Unspecified encephalitis due to other infection EC | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Post other specified vaccination encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Post-immunization encephalitis NOS | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Post-infectious encephalitis NOS | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified mosquito-borne virus encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Viral encephalitis from other arthropods | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other causes of encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Encephalitis NOS | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Primary encephalitis | Finding site | True | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Mosquito-borne orthobunyavirus encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Nairoviral encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| West Nile encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| West Nile fever without encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cache Valley encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| AIDS with encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Human immunodeficiency virus encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified diagnostic endoscopic examination of ventricle of brain | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified diagnostic endoscopic examination of ventricle of brain | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, unspecified state of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, unspecified state of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with no loss of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with no loss of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with less than 1 hour loss of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with less than 1 hour loss of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with 1-24 hours loss of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with 1-24 hours loss of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with more than 24 hours loss of consciousness and return to pre-existing conscious level | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with more than 24 hours loss of consciousness and return to pre-existing conscious level | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with more than 24 hours loss of consciousness without return to pre-existing conscious level | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 2 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with more than 24 hours loss of consciousness without return to pre-existing conscious level | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with loss of consciousness of unspecified duration | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with loss of consciousness of unspecified duration | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with concussion, unspecified | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 2 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound, with concussion, unspecified | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury with open intracranial wound | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury with open intracranial wound | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury with open intracranial wound, unspecified state of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury with open intracranial wound, unspecified state of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with no loss of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with no loss of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with less than 1 hour loss of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with less than 1 hour loss of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with 1-24 hours loss of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with 1-24 hours loss of consciousness | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with more than 24 hours loss of consciousness and return to pre-existing conscious level | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with more than 24 hours loss of consciousness and return to pre-existing conscious level | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with more than 24 hours loss of consciousness without return to pre-existing conscious level | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with more than 24 hours loss of consciousness without return to pre-existing conscious level | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with loss of consciousness of unspecified duration | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with loss of consciousness of unspecified duration | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with concussion, unspecified | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury with open intracranial wound, with concussion, unspecified | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Diagnostic endoscopic examination of ventricle of brain NOS | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Diagnostic endoscopic examination of ventricle of brain NOS | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other cerebral hemorrhage following injury without mention of open intracranial wound | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Senile brain amyloidosis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 2 | 
| Senile brain amyloidosis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Open exploration of ventricle of brain | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Open exploration of ventricle of brain | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Connection from cystic brain tumor to subcutaneous reservoir | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Connection from cystic brain tumor to subcutaneous reservoir | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 3 | 
| Drainage of lesion of brain tissue | Procedure site - Indirect | True | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Drainage of abscess of brain tissue | Procedure site - Indirect | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Removal of neurostimulator electrode from brain tissue | Procedure site - Indirect | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Aspiration of brain hematoma | Procedure site - Indirect | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Repair of meningoencephalocele | Procedure site - Direct | True | Brain tissue structure | Inferred relationship | Existential restriction modifier | 2 | 
| Uncinate herniation | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Repair of encephalocele | Procedure site - Direct | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Aspiration of brain cyst | Procedure site - Indirect | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Aspiration of cystic tumor of brain tissue | Procedure site - Indirect | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Deep brain stimulation | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| External neurostimulation of brain tissue | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection of antibiotic into brain abscess | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Transcranial magnetic stimulation of brain | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 2 | 
| Transcranial electrical stimulation of brain | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 2 | 
| Removal of intracranial electrodes with synchronous replacement | Procedure site - Indirect | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Removal of electrodes of brain with synchronous replacement | Procedure site - Indirect | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Adjustment of neurostimulator electrode in brain tissue | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Direct brain stimulation | Procedure site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Aspiration of lesion of brain tissue | Procedure site - Indirect | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Aspiration of brain abscess | Procedure site - Indirect | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 | 
| Rio Bravo viral encephalitis | Finding site | False | Brain tissue structure | Inferred relationship | Existential restriction modifier | 1 |