| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Lumbar epidural steroid injection | Procedure site | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Therapeutic lumbar epidural injection | Procedure site | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 2 | 
| Local anesthetic lumbar epidural block | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Lumbar epidural steroid injection | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Injection into lumbar epidural space | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of neurolytic solution, lumbar | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of contrast substance, lumbar | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of anesthetic substance, diagnostic, lumbar, continuous | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of anesthetic substance, therapeutic, lumbar, continuous | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Therapeutic lumbar epidural injection | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of anesthetic substance, therapeutic, lumbar, continuous | Procedure site - Direct | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Abscess in epidural space of lumbar spine | Finding site | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Lumbar epidural injection using computed tomography guidance | Procedure site - Direct | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 2 | 
| Foraminal epidural injection of lumbar spine using fluoroscopic guidance | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 2 | 
| Therapeutic lumbar epidural injection | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Local anesthetic lumbar epidural block | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Lumbar epidural steroid injection | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of contrast substance, lumbar | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Injection into lumbar epidural space | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Foraminal epidural injection of lumbar spine using fluoroscopic guidance | Procedure site - Direct | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of lumbar spine using fluoroscopic guidance | Procedure site - Direct | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of lumbar spine using fluoroscopic guidance | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 2 | 
| Lumbar epidural injection using computed tomography guidance | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Lumbar epidural injection using computed tomography guidance | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of lumbar spine using fluoroscopic guidance | Procedure site - Direct | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of lumbar spine using fluoroscopic guidance | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 2 | 
| Abscess in epidural space of lumbar spine | Finding site | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Lumbar epidural injection using computed tomography guidance | Procedure site - Direct | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 2 | 
| Foraminal epidural injection of lumbar spine using fluoroscopic guidance | Procedure site - Direct | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Foraminal epidural injection of lumbar spine using fluoroscopic guidance | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 2 | 
| Epidural injection of neurolytic solution, lumbar | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of implantable epidural access system into lumbar epidural space | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of catheter into lumbar epidural space | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural lumbar injection of blood patch | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of implantable epidural access system into lumbar epidural space | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of catheter into lumbar epidural space | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural lumbar injection of blood patch | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Insertion of temporary catheter into lumbar epidural space | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 1 | 
| Computed tomography myelogram of thoracic spine with lumbar injection of contrast | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 5 | 
| Computed tomography myelogram of lumbosacral spine with lumbar injection of contrast | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 7 | 
| Entire lumbar extradural space | Is a | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier |  | 
| Epidural injection of anesthetic substance, therapeutic, lumbar, continuous | Procedure site - Indirect | True | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 3 | 
| Fluoroscopy guided epidural injection of lumbar spine | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 2 | 
| Fluoroscopy guided foraminal epidural injection of lumbar spine | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 2 | 
| Computerised tomography guided lumbar epidural injection (procedure) | Procedure site - Indirect | False | Structure of lumbar extradural space | Inferred relationship | Existential restriction modifier | 3 |