| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Decompression of fracture of spine | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Spinal decompression without discectomy | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Spinal decompression with discectomy | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Decompression laminectomy | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Gill operation | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Decompression of thoracic spine | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Decompression of lumbar spine | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Decompression of cervical spine | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Girdlestone operation for spinal fusion | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Laminectomy with spinal fusion | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Foraminotomy | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Decompression operations on unspecified spine | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Revision posterior decompression cervical cord | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Primary anterior decompression of cervical spinal cord and fusion | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Primary decompression of thoracic spinal cord and fusion of joint of thoracic spine | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Primary posterior decompression cervical cord | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Excision of lamina of lumbar vertebra for decompression of spinal cord | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Excision of bone of suboccipital cranium and lamina of cervical vertebra for decompression of medulla and spinal cord | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Partial excision of body of lumbar vertebra with decompression of spinal cord, nerve roots and cauda equina by thoracolumbar approach | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Partial excision of body of lumbar vertebra with decompression of spinal cord, nerve roots and cauda equina by transperitoneal approach | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Partial excision of body of lower thoracic vertebra with decompression of spinal cord, nerve roots and cauda equina by thoracolumbar approach | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Reconstruction of lamina of cervical vertebra with decompression of spinal cord | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Partial excision of body of thoracic vertebra with decompression of spinal cord and nerve roots by transthoracic approach | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Partial excision of body of lumbar vertebra with decompression of spinal cord, nerve roots and cauda equina by lateral extracavitary approach | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Partial excision of body of thoracic vertebra with decompression of spinal cord, nerve roots and cauda equina by extracavitary approach | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Partial excision of body of sacral vertebra with decompression of spinal cord, nerve roots and cauda equina by retroperitoneal approach | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Partial excision of body of sacral vertebra with decompression of spinal cord, nerve roots and cauda equina by transperitoneal approach | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Total excision of body of sacral vertebra with decompression of spinal cord, nerve roots and cauda equina by transperitoneal approach | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Total excision of body of lumbar vertebra with decompression of spinal cord, nerve roots and cauda equina by transperitoneal approach | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Total excision of body of sacral vertebra with decompression of spinal cord, nerve roots and cauda equina by retroperitoneal approach | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Primary decompression of lumbar spinal cord by posterior approach | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Primary decompression of cervical spinal cord by anterior approach | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Primary percutaneous decompression using plasma mediated ablation to intervertebral disc | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Revisional percutaneous decompression using plasma mediated ablation to intervertebral disc | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Revisional decompression of posterior fossa and upper cervical spinal cord and instrumentation | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Primary decompression of posterior fossa and upper cervical spinal cord | Is a | True | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  | 
| Decompression operations on unspecified spine | Is a | False | Decompression of spinal cord | Inferred relationship | Existential restriction modifier |  |