| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Bartsocas Papas syndrome | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 2 | 
| Congenital neck webbing, unspecified | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Congenital webbing of neck NOS | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Congenital web of larynx, unspecified | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Congenital web of larynx NOS | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Syndactyly of multiple digits, unspecified | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Joint contracture, webbed neck, micrognathia, hypoplastic nipple syndrome | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 4 | 
| Syndactyly NOS | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Simple syndactyly of fingers - first web | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Simple syndactyly of fingers - second to fourth web | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Osseous syndactyly of fingers - first web | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Osseous syndactyly of fingers - second to fourth web | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Simple syndactyly of toes | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Simple syndactyly of toes, first web space | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Simple syndactyly lesser toes | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Osseous syndactyly of toes first web space | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Osseous syndactyly lesser toes | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Antecubital pterygium syndrome | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Multiple pterygium syndrome | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Lethal multiple pterygium syndrome | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 4 | 
| X-linked lethal multiple pterygium syndrome | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 3 | 
| Autosomal dominant multiple pterygium syndrome | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 3 | 
| Duodenal web | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Incomplete congenital pyloric antral membrane | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Complete congenital antral web | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Congenital lacrimal punctum membrane | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Synbrachydactyly | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Popliteal pterygium syndrome | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Popliteal web syndrome | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Syndactyly | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Syndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Syndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Release of syndactyly of toes | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Dewebbing procedure | Procedure morphology | False | Congenital webbing | Inferred relationship | Some |  | 
| Dewebbing of syndactyly of fingers | Procedure morphology | False | Congenital webbing | Inferred relationship | Some |  | 
| Dewebbing of syndactyly of toes | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Dewebbing of syndactyly of toes | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Syndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Syndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Dewebbing of syndactyly of toes | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Dewebbing of syndactyly of toes | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Brachysyndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Brachysyndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Syndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Syndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Dewebbing of syndactyly of toes | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Dewebbing of syndactyly of toes | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Brachysyndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Brachysyndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Syndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Syndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Dewebbing of syndactyly of toes | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Dewebbing of syndactyly of toes | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Brachysyndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Brachysyndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Dewebbing procedure | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Dewebbing of syndactyly of fingers | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Dewebbing of syndactyly of fingers | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Syndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Syndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Dewebbing of syndactyly of toes | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Dewebbing of syndactyly of toes | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Brachysyndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Brachysyndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Osseous syndactyly of toes second to fourth web | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Brachysyndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 3 | 
| Osseous syndactyly of toes first web space | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Osseous syndactyly lesser toes | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Correction of syndactyly of fingers using skin graft | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Repair of syndactyly | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Correction of syndactyly of fingers using skin expander | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Congenital pyloric antral membrane | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Correction of complicated syndactyly | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 2 | 
| Syndactyly of toes with fusion of bones | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Division of congenital web of larynx | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Division of congenital web of pharynx | Direct morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Congenital web of larynx NOS | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Congenital web of larynx, unspecified | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Congenital web of oesophagus | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Simple syndactyly lesser toes | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Division of congenital web of larynx | Direct morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Neck webbing | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Division of congenital web of pharynx | Direct morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Popliteal pterygium syndrome | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Congenital web of larynx | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Dewebbing procedure | Direct morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Syndactyly of thumb | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Syndactyly of fingers with fusion of bones | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Simple syndactyly of fingers - first web | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Release of syndactyly of toes | Direct morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Simple syndactyly of fingers - second to fourth web | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Osseous syndactyly of fingers - first web | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Simple syndactyly of toes | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Congenital webbing of neck NOS | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Simple syndactyly of toes, first web space | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Osseous syndactyly of fingers - second to fourth web | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Congenital neck webbing, unspecified | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Jackson's membrane | Associated morphology | True | Congenital webbing | Inferred relationship | Some | 1 | 
| Syndactyly of fingers | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Simple syndactyly of toes second to fourth web | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 | 
| Simple syndactyly of fingers | Associated morphology | False | Congenital webbing | Inferred relationship | Some | 1 |