| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Other specified repair of spina bifida | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Repair of spina bifida NOS | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Other operations on meninges of spinal cord | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified other operation on meninges of spinal cord | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other operation on meninges of spinal cord NOS | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified spinal anesthetic | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 4 | 
| Spinal anesthetic NOS | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 4 | 
| Malignant neoplasm of spinal meninges NOS | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Benign neoplasm of spinal meninges NOS | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Plastic operation on spinal cord/meninges NOS | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Freeing of spinal tether | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Biopsy of lesion of spinal cord meninges | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Meningomyelocele/myelocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Hydromyelocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spinal hydromeningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cervical spinal hydromeningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cervical hydromyelocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Thoracic hydromyelocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Lumbar hydromyelocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spinal meningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cervical spinal meningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Thoracic spinal meningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Lumbar spinal meningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cervical meningomyelocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Thoracic meningomyelocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Lumbar meningomyelocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cervical myelocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Thoracic myelocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Lumbar myelocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Hydromyelocele with hydrocephalus | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Spinal hydromeningocele, unspecified | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spinal hydromeningocele NOS | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Hydromyelocele of unspecified site | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Hydromyelocele NOS | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spinal meningocele of unspecified site | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spinal meningocele NOS | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Meningomyelocele of unspecified site | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Meningomyelocele NOS | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Myelocele of unspecified site | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Myelocele NOS | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of anesthetic substance, diagnostic, caudal, continuous | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 4 | 
| Epidural anesthetic NEC | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Local anesthetic lumbar epidural block | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Local anesthetic sacral epidural block | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Epidural anesthesia | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spinal subdural local anesthetic block | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Local anesthetic thoracic epidural block | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Local anesthetic cervical epidural block | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of anesthetic substance, diagnostic, lumbar, continuous | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Epidural injection of anesthetic substance, therapeutic, lumbar, continuous | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of anesthetic substance, therapeutic, caudal, continuous | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Local anesthetic lumbar intrathecal block | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 5 | 
| Saddle block | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 7 | 
| Congenital spinal hydromeningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Biopsy of meninges of spinal cord | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital spinal meningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital sacral meningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Extirpation of lesion of meninges of spinal cord | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Freeing of spinal tether | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Biopsy of lesion of spinal cord meninges | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Hydromyelocele of unspecified site | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Hydromyelocele NOS | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Biopsy of lesion of spinal cord meninges | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Hydromyelocele of unspecified site | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Hydromyelocele NOS | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Freeing of spinal tether | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Local anesthetic lumbar intrathecal block | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Saddle block | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital spinal hydromeningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Biopsy of meninges of spinal cord | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital spinal meningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Extirpation of lesion of meninges of spinal cord | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital sacral meningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Injection of steroid into spinal canal | Procedure site | True | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Low dose epidural | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Hydromyelocele NOS | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital spinal hydromeningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Local anesthetic lumbar intrathecal block | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital spinal meningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Saddle block | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Freeing of spinal tether | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Biopsy of lesion of spinal cord meninges | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Biopsy of meninges of spinal cord | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Hydromyelocele of unspecified site | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 | 
| Extirpation of lesion of meninges of spinal cord | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital sacral meningocele | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 4 | 
| Administration of epidural test dose | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier |  | 
| Administration of epidural top-up | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier |  | 
| Epidural neurolysis | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier |  | 
| Epidural steroid injection | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier |  | 
| Injection into cervical epidural space | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection into thoracic epidural space | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection into lumbar epidural space | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier |  | 
| Injection into sacral epidural space | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 1 | 
| Epidural injection of neurolytic solution, lumbar | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Epidural injection of contrast substance, caudal | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Epidural injection of contrast substance, lumbar | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier |  | 
| Injection of spinal epidural space | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier |  | 
| Idiopathic feline polioencephalomyelitis | Finding site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 3 | 
| Administration of drug or medicament via epidural route | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier |  | 
| Epidural injection of anesthetic substance, therapeutic, caudal, continuous | Procedure site | False | Spinal cord meninges structure | Inferred relationship | Existential restriction modifier | 2 |