| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Entire brachial plexus | Is a | True | Brachial plexus structure | Inferred relationship | Existential restriction modifier |  | 
| Structure of cord of brachial plexus | Is a | True | Brachial plexus structure | Inferred relationship | Existential restriction modifier |  | 
| Structure of root of brachial plexus | Is a | True | Brachial plexus structure | Inferred relationship | Existential restriction modifier |  | 
| Structure of trunk of brachial plexus | Is a | True | Brachial plexus structure | Inferred relationship | Existential restriction modifier |  | 
| Structure of division of trunk of brachial plexus | Is a | True | Brachial plexus structure | Inferred relationship | Existential restriction modifier |  | 
| Structure of branch of brachial plexus | Is a | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier |  | 
| Structure of region of brachial plexus | Is a | True | Brachial plexus structure | Inferred relationship | Existential restriction modifier |  | 
| Structure of superior lateral brachial cutaneous nerve | Is a | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier |  | 
| Brachial plexus trunci | Is a | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier |  | 
| Structure of posterior fasciculus of brachial plexus | Is a | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier |  | 
| Cervical rib cervical band syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 3 | 
| Scalenus anticus syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Long thoracic nerve injury | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Brachial plexus block by interscalene approach | Procedure site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial plexus block by supraclavicular approach | Procedure site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial plexus block by infraclavicular approach | Procedure site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Radiation damage to brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Compression of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Brachial palsy as birth trauma | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Costoclavicular syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 3 | 
| Injury to brachial plexus as birth trauma | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography of brachial plexus | Procedure site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of brachial plexus | Procedure site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Erb-Duchenne paralysis | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Klumpke-Déjerine paralysis as birth trauma | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Klumpke-Déjerine paralysis | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cervical rib syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 6 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Traction injury of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Compression of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Long thoracic nerve lesion | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Thoracic outlet syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 3 | 
| Vascular thoracic outlet syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 5 | 
| Hyperabduction syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Neuralgic amyotrophy | Finding site | True | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial radiculitis | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial plexus disorder | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Upper brachial plexus neuropathy | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Neuroplasty of major peripheral nerve of brachial plexus | Procedure site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Injection of anesthetic agent into brachial plexus | Procedure site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Developmental displacement of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Heredofamilial brachial plexus paralysis syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Lower brachial plexus neuropathy | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Middle brachial plexus neuropathy | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injury of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial neuritis | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial plexus neuralgia | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Suture of brachial plexus | Procedure site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Brachial plexus displacement | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial plexus palsy due to birth trauma | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Closed injury, brachial plexus, upper roots | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Closed injury, brachial plexus, lower roots | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Closed injury, brachial plexus, all roots (complete) | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Open injury, brachial plexus, upper roots | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Open injury, brachial plexus, lower roots | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Open injury, brachial plexus, all roots (complete) | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Closed injury, long thoracic nerve | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Open injury, long thoracic nerve | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial (cervical) neuritis | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Erb-Duchenne palsy as birth trauma | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial plexus lesions NOS | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial palsy unspecified, due to birth trauma | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified brachial plexus palsy due to birth trauma | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial plexus palsy due to birth trauma NOS | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Neurogenic thoracic outlet syndrome | Finding site | True | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Compression of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial plexus block by axillary approach | Procedure site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Compression of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Compression of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Structure of supraclavicular part of brachial plexus | Is a | True | Brachial plexus structure | Inferred relationship | Existential restriction modifier |  | 
| Structure of infraclavicular part of brachial plexus | Is a | True | Brachial plexus structure | Inferred relationship | Existential restriction modifier |  | 
| Compression of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Compression of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Compression of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Compression of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Brachial plexus block by interscalene approach | Procedure site - Indirect | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial plexus block by supraclavicular approach | Procedure site - Indirect | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial plexus block by infraclavicular approach | Procedure site - Indirect | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Brachial plexus block by axillary approach | Procedure site - Indirect | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Neurogenic thoracic outlet syndrome due to cervical band | Finding site | True | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Injection of anesthetic agent into brachial plexus | Procedure site - Indirect | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Compression of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Compression of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Compression of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Compression of brachial plexus | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Pancoast's syndrome | Finding site | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 2 | 
| Computed tomography of brachial plexus | Procedure site - Direct | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging of brachial plexus | Procedure site - Direct | False | Brachial plexus structure | Inferred relationship | Existential restriction modifier | 1 |