| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Weaver Williams syndrome (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Ventricular septal defect with posterior malaligned outlet septum with overriding aortic valve (disorder) | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Microbrachycephaly, ptosis, cleft lip syndrome (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Oto-palato-digital syndrome, type I | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Ventricular septal defect with malaligned outlet septum to left | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Ventricular septal defect with absent outlet septum and overriding truncal valve with inferior muscular rim (disorder) | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Ventricular septal defect with absent outlet septum and overriding truncal valve (disorder) | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Bilateral microtia with deafness and cleft palate syndrome (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Cholestasis with pigmentary retinopathy and cleft palate syndrome (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 4 | 
| Median cleft of upper lip, corpus callosum lipoma, cutaneous polyp syndrome (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Coloboma of macula with brachydactyly type B syndrome (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Temtamy syndrome | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Ventricular septal defect with anterior malaligned outlet septum with overriding aortic valve (disorder) | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Thoracic spina bifida with hydrocephalus | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Spina bifida with hydrocephalus - closed | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Fissured spine with hydrocephalus | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Lumbar spina bifida with hydrocephalus - open | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 5 | 
| Double outlet left ventricle | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 4 | 
| Hydrencephalomeningocele | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| hydromeningocele | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| craniële hydromeningocele (aandoening) | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 5 | 
| thoracale hydromeningocele | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Sacral spina bifida without hydrocephalus - closed | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Complete transposition of great vessels (disorder) | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Open enlargement of defect of interventricular septum (procedure) | Direct morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Enlargement of restrictive ventricular septal defect | Direct morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Left ventricular-right atrial communication | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Congenital split right ear lobe | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Genitopalatocardiac syndrome | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Microcornea, posterior megalolenticonus, persistent fetal vasculature, coloboma syndrome (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Congenital split left ear lobe | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Iniencephaly | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Frontonasal dysplasia, severe microphthalmia, severe facial clefting syndrome (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Iniencephaly - open | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Iniencephaly - closed | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital failure of fusion between maxillary and mandibular processes (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Dandy-Walker syndrome with spina bifida | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 5 | 
| Colobomatous microphthalmia, obesity, hypogenitalism, intellectual disability syndrome | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Congenital split ear lobe (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Discordant ventriculoarterial connection (disorder) | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Corrected transposition of great vessels | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Holzgreve syndrome (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Holzgreve syndrome (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Repair of myelomeningocele greater than 5 centimeters in diameter (procedure) | Direct morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Repair of spinal myelomeningocele using free flap (procedure) | Direct morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Ankyloblepharon filiforme adnatum with cleft palate syndrome | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Thompson operation, cleft lip repair | Direct morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Repair of spinal myelomeningocele using local flap | Direct morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Repair of myelomeningocele | Direct morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Repair of spinal myelomeningocele using distant flap | Direct morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Closure of cleft foot | Direct morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| hydromeningomyelocele (aandoening) | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Cleft hard palate with cleft lip, bilateral | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Complete bilateral cleft lip (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| bilaterale incomplete cheilopalatoschisis (aandoening) | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Complete cleft of hard palate | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Bilateral incomplete cleft lip and bilateral incomplete cleft of alveolar process of maxilla (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 4 | 
| Bilateral incomplete cleft lip and bilateral incomplete cleft of alveolar process of maxilla (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Split spinal cord malformation (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Incomplete bilateral cleft lip | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Incomplete bilateral cleft palate | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| bilaterale complete en incomplete cheiloschisis (aandoening) | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Bilateral cleft lip | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Cleft palate and bilateral cleft lip (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Incomplete cleft palate (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Bilateral complete cleft palate with cleft lip | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 4 | 
| Complete bilateral cleft palate | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Cranioplasty with synchronous repair of encephalocele | Direct morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Cranioplasty with synchronous repair of encephalocele | Direct morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Repair of encephalocele | Direct morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital spinal meningocele | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Nasal encephalocele | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Nasal encephalocele | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Nasofrontal encephalocele | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Lumbar spinal meningocele (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Encephalocele | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Repair of meningoencephalocele | Direct morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Repair of meningoencephalocele | Direct morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Temporal encephalocele | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Lumbar meningomyelocele | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Parietal encephalocele | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Congenital cerebral meningocele | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Myelocele with hydrocephalus | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Encephalomyelocele | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Nasopharyngeal encephalocele | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Congenital endaural hernia | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Spina bifida of lumbar region | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Meningomyelocele of lumbosacral spine (disorder) | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Thoracic spinal meningocele | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Cervical myelocele | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital cerebral hernia | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| craniële hydromeningocele (aandoening) | Associated morphology | False | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Encephalocele of vertex (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Frontal encephalocele | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Lipomyelomeningocele | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Encephalocele of orbit | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Lumbar spina bifida with hydrocephalus - closed | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| DK phocomelia syndrome (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 4 | 
| Spina bifida and hypospadias syndrome (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Spina bifida and hypospadias syndrome (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Lumbar spina bifida without hydrocephalus - closed (disorder) | Associated morphology | True | Developmental failure of fusion (morphologic abnormality) | Inferred relationship | Some | 1 |