| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with loss of consciousness of unspecified duration | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 3 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with concussion, unspecified | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 4 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with concussion, unspecified | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with no loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 4 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with no loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with less than 1 hour loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with less than 1 hour loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 4 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with 1-24 hours loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with 1-24 hours loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 3 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 4 | 
| Closed traumatic subdural intracranial hemorrhage | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Closed traumatic subdural intracranial hemorrhage | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 3 | 
| Subdural intracranial hemorrhage due to birth trauma | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural intracranial hemorrhage due to birth trauma | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Creation of subdural-peritoneal shunt | Procedure site - Direct | True | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection of anesthetic substance, therapeutic, subdural, differential | Procedure site - Direct | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection of anesthetic substance, therapeutic, subdural, continuous | Procedure site - Direct | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Drainage of subdural space | Procedure site - Indirect | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified drainage of subdural space | Procedure site - Indirect | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Drainage of subdural space NOS | Procedure site - Indirect | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural hemorrhage following injury with open intracranial wound, with no loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 5 | 
| Subdural hemorrhage following injury with open intracranial wound, with no loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 4 | 
| Subdural hemorrhage following injury with open intracranial wound, with less than 1 hour loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 5 | 
| Subdural hemorrhage following injury with open intracranial wound, with less than 1 hour loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 4 | 
| Subdural hemorrhage following injury with open intracranial wound, with 1-24 hours loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 3 | 
| Subdural hemorrhage following injury with open intracranial wound, with 1-24 hours loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 5 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 5 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 5 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Traumatic intracranial subdural hematoma | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Traumatic intracranial subdural hematoma | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 3 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, unspecified state of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, unspecified state of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with loss of consciousness of unspecified duration | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with loss of consciousness of unspecified duration | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with concussion, unspecified | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with concussion, unspecified | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with no loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with no loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with less than 1 hour loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with less than 1 hour loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with 1-24 hours loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with 1-24 hours loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Closed traumatic subdural intracranial hemorrhage | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Closed traumatic subdural intracranial hemorrhage | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural intracranial hemorrhage due to birth trauma | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural intracranial hemorrhage due to birth trauma | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural hemorrhage following injury with open intracranial wound, with no loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Traumatic subdural hematoma | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Traumatic subdural hematoma with open intracranial wound | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Traumatic subdural hematoma with open intracranial wound | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Traumatic intracranial subdural hematoma | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Local intracranial subdural hematoma due to birth trauma | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural hemorrhage following injury with open intracranial wound, with 1-24 hours loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury with open intracranial wound, with less than 1 hour loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 3 | 
| Subdural-pleural shunt operation | Procedure site - Indirect | True | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural-peritoneal shunt operation | Procedure site - Indirect | True | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Revision of external subdural drain | Procedure site - Indirect | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Revision of subdural-pleural shunt | Procedure site - Indirect | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Traumatic intracranial subdural hematoma with brief loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Removal of external subdural drain | Procedure site - Indirect | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Removal of subdural-pleural shunt | Procedure site - Indirect | True | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Traumatic subdural hematoma without open intracranial wound | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Traumatic subdural hematoma without open intracranial wound | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| External subdural drain procedure | Procedure site - Indirect | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Traumatic spinal subdural hematoma | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Creation of external subdural drain | Procedure site - Indirect | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Creation of subdural-pleural shunt | Procedure site - Indirect | True | Subdural space structure | Inferred relationship | Existential restriction modifier | 3 | 
| Subdural hemorrhage due to intrapartum anoxia AND/OR hypoxia | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural intracranial hemorrhage | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection of anesthetic substance, therapeutic, subdural, continuous | Procedure site - Direct | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with less than 1 hour loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with no loss of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural intracranial hemorrhage in fetus or newborn | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Closed traumatic subdural intracranial hemorrhage | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following open wound of head | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural 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 | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage NOS | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural intracranial hemorrhage due to birth trauma | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Non-traumatic intracranial subdural hemorrhage | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Drainage of subdural space | Procedure site - Indirect | True | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Traumatic subdural intracranial hemorrhage | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Other specified drainage of subdural space | Procedure site - Indirect | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Non-traumatic subdural hematoma | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Drainage of subdural space NOS | Procedure site - Indirect | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural abscess | Finding site | True | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, unspecified state of consciousness | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| Subdural hemorrhage following injury without mention of open intracranial wound, with concussion, unspecified | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 2 | 
| External subdural drain procedure | Procedure site - Indirect | True | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 | 
| Local intracranial subdural hematoma due to birth trauma | Finding site | False | Subdural space structure | Inferred relationship | Existential restriction modifier | 1 |