| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Congenital absence of all bilateral toes | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital absence of all bilateral toes | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 2 | 
| Common atrium with common atrioventricular junction | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Common atrium with separate arterioventricular junctions | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| X-linked hypodontia | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| X-linked oligodontia | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital complete absence of nasolacrimal drainage system | Associated morphology | True | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| [X]Other anophthalmos | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| [X]Congenital absence, atresia and stenosis of other specified parts of small intestine | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 3 | 
| [X]Congenital absence, atresia and stenosis of other parts of large intestine | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 3 | 
| [X]Congenital absence, atresia and stenosis of large intestine, part unspecified | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 3 | 
| Agenesis of other multiple metatarsal | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital absence of other lesser toe | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Absence of artery NEC | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Agenesis of other metatarsal | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital absence of external ear, unspecified | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital alopecia NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital absence of digits NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Anencephalus and similar anomalies NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital absence of muscle or tendon NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Other absent muscle | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Agenesis of lung NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Other congenital anomaly of penis | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Renal agenesis, unspecified | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Renal agenesis, unspecified NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital absence of nose NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Small intestine atresia or stenosis NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 3 | 
| Congenital absence of large intestine NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 3 | 
| Congenital absence of pubis NEC | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital absence of kidney NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Agenesis of other tarsal bone | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Clinical anophthalmos, unspecified | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Anophthalmos NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital absence of other multiple toes | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Phocomelia of unspecified limb | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital absence of spine NEC | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital alopecia, unspecified | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital absence of vertebra NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Hemivertebra NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified anencephalus | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Anencephalus NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital absence finger NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Imperforate small intestine NEC | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 3 | 
| Atresia of large intestine NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 3 | 
| Atresia and stenosis of large intestine, rectum or anal canal NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 3 | 
| Non-fenestrated atrial septal defect within oval fossa | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Fenestrated atrial septal defect within oval fossa | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Phocomelia of upper limb NOS | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital absence of lesser toe | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 1 | 
| [X]Congenital absence, atresia and stenosis of other specified parts of small intestine | Associated morphology | False | Congenital absence | Inferred relationship | Existential restriction modifier | 2 |