| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Posterior decompression of fracture of spine NEC | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Primary anterior thoracic spine corpectomy and reconstruction HFQ | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 3 | 
| Revisional anterior thoracic spine corpectomy and reconstruction HFQ | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 3 | 
| Primary anterior cervical spine corpectomy with reconstruction HFQ | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 3 | 
| Revisional anterior cervical spine corpectomy with reconstruction HFQ | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 3 | 
| Fluoroscopic vertebroplasty | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Fluoroscopic vertebroplasty | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Fluoroscopy guided kyphoplasty of spinal fracture | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Fluoroscopy guided kyphoplasty of spinal fracture | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Stress fracture of pars interarticularis | Finding site | True | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture of bone of spine using bone screw internal spinal fixation system | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Open reduction of fracture of bone of spine and internal fixation using bone screw internal spinal fixation system | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open reduction of fracture of bone of spine and internal fixation using bone screw internal spinal fixation system | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Revision of open reduction of fracture of bone of spine and internal fixation using bone screw internal spinal fixation system | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Revision of open reduction of fracture of bone of spine and internal fixation using bone screw internal spinal fixation system | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Revisional fusion of joint of spine | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Revisional posterior fusion of atlantoaxial joint NEC | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Other revisional fusion of joint of spine | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Other revisional fusion of joint of spine NOS | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified other revisional fusion of joint of spine | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Revisional posterior fusion of atlantoaxial joint using pedicle screw | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Revisional posterior fusion of atlantoaxial joint using transarticular screw | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Revisional fusion of occipitocervical junction | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Anterior and posterior attachment of correctional instrument to spine | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| [X]Collapsed vertebra in diseases classified elsewhere | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| [X]Other idiopathic scoliosis | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| [X]Other idiopathic scoliosis | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| [X]Other secondary kyphosis | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to closed reduction spinal fracture alone | Procedure site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Primary closed reduction spinal fracture and other external stabilization (procedure) | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to closed reduction spinal fracture and other external stabilization (procedure) | Procedure site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction spinal fracture and other external stabilization (procedure) | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to open reduction spinal fracture and other external stabilization (procedure) | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction spinal fracture and other internal fixation | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to open reduction spinal fracture and other internal fixation | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified fixation of fracture of spine | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture of spine NOS | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction spinal fracture alone | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to open reduction spinal fracture alone | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Primary closed reduction spinal fracture alone | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Malignant neoplasm of vertebral column NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Instrumental correction deformity of spine NOS | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Open spinal fracture with unspecified cervical cord lesion, C1-4 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open spinal fracture with unspecified cervical cord lesion, C5-7 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Fusion of other joint of spine | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Collapsed vertebra NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of spine, unspecified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of spine with spinal cord lesion unspecified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Fracture of spine with spinal cord lesion NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open fracture of spine with spinal cord lesion unspecified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Closed spinal fracture with unspecified cervical cord lesion, C1-4 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open spinal fracture with incomplete cervical cord lesion, C5-7 not otherwise specified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Other specified instrumental correction of deformity of spine | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Osteotomy of spine NEC | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified decompression of fracture of spine | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Decompression of fracture of spine NOS | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Open spinal fracture with unspecified thoracic cord lesion, T1-6 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open spinal fracture with incomplete thoracic cord lesion, T7-12 not otherwise specified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Closed spinal fracture with unspecified thoracic cord lesion, T1-6 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open reduction of fracture of spine NEC | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Benign neoplasm of vertebral column NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture of spine and skull traction however further qualified | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Collapse of vertebra due to osteoporosis NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Open spinal fracture with incomplete thoracic cord lesion, T1-6 not otherwise specified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Closed spinal fracture with unspecified lumbar cord lesion | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open spinal fracture with unspecified lumbar cord lesion | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open spinal fracture with incomplete lumbar cord lesion not otherwise specified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open fracture of spine, unspecified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Fracture of spine without mention of spinal cord lesion NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Meningomyelocele of unspecified site | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 3 | 
| Myelocele of unspecified site | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Spinal hydromeningocele, unspecified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 3 | 
| Spinal hydromeningocele NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 3 | 
| Hydromyelocele of unspecified site | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 3 | 
| Hydromyelocele NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 3 | 
| Meningomyelocele NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 3 | 
| Myelocele NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital absence of vertebra NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Hemivertebra NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Spinal meningocele of unspecified site | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Spinal meningocele NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Closed spinal fracture with unspecified thoracic cord lesion,T7-12 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Closed spinal fracture with incomplete cervical cord lesion, C1-4 not otherwise specified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Manipulation of spine NOS | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Closed spinal fracture with unspecified cervical cord lesion, C5-7 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Closed spinal fracture with incomplete cervical cord lesion, C5-7 not otherwise specified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open spinal fracture with incomplete cervical cord lesion, C1-4 not otherwise specified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Closed spinal fracture with incomplete thoracic cord lesion, T1-6 not otherwise specified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Kyphosis associated with other condition | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Closed spinal fracture with incomplete thoracic cord lesion,T7-12 not otherwise specified | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open spinal fracture with unspecified thoracic cord lesion, T7-12 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Kyphosis secondary to other treatment | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Acquired kyphosis NOS | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 1 | 
| Open spinal fracture with incomplete cervical cord lesion, C5-7 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open spinal fracture with incomplete cervical cord lesion, C1-4 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Closed spinal fracture with incomplete thoracic cord lesion, T1-6 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Closed spinal fracture with incomplete thoracic cord lesion,T7-12 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Fixation of fracture of spine and skull traction | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Posterior instrumented fusion of thoracic spine | Procedure site - Direct | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open spinal fracture with incomplete thoracic cord lesion, T7-12 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 | 
| Open spinal fracture with incomplete thoracic cord lesion, T1-6 | Finding site | False | Bone structure of spine | Inferred relationship | Existential restriction modifier | 2 |