| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Domed head | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| encéphalocystocèle | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Closed fracture of skull NOS with intracranial injury, with more than 24 hours loss of consciousness and return to pre-existing conscious level | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Removal of Vinke tongs with synchronous replacement | Procedure site - Indirect (attribute) | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Removal of Vinke tongs with synchronous replacement | Procedure site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Closed fracture of skull NOS with intracranial injury, with more than 24 hours loss of consciousness without return to pre-existing conscious level | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Congenital hypoplasia of basisphenoid bone | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Eruption cyst of jaw (disorder) | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Occipital encephalocele | Finding site | True | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Open fracture of skull NOS without mention of intracranial injury | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Iniencephaly - closed | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 4 | 
| Correction of oblique facial cleft | Procedure site | True | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Open fracture of skull NOS without mention of intracranial injury, with 1-24 hours loss of consciousness | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Open fracture of skull NOS without mention of intracranial injury, with more than 24 hours loss of consciousness and return to pre-existing conscious level | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Closed fracture of skull NOS with intracranial injury, with concussion, unspecified | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Hyperphosphatasemia tarda | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Atretocephalus | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Closed fracture of skull NOS with intracranial injury | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Metastatic malignant neoplasm to bone of skull | Finding site | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| [X]Other specified congenital malformations of skull and face bones | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Congenital abnormal shape of supraoccipital bone | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Modification of cranioplasty | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Closed fracture of skull NOS with intracranial injury, with loss of consciousness of unspecified duration | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Other specified skull or face bone anomaly | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Micrognathism unspecified | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Encephalocele of other specified site | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Congenital fenestration of basisphenoid bone | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Fluoroscopy and radiography - skull | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Exploratory craniotomy, supratentorial (procedure) | Procedure site - Direct (attribute) | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Congenital retrognathism | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Compression of the fourth ventricle - technique (procedure) | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Removal of Gardner Wells tongs with synchronous replacement | Procedure site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Cranial osteopathic manipulation (procedure) | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Defect of skull ossification | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Leptocephaly | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Extirpation of lesion of cranium (procedure) | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Dicephalus dipus tribrachius | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Cranioplasty using prosthesis (procedure) | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Cranial dysostosis NEC | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Cranio-orbital remodelling for plagiocephaly | Procedure site | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Sequestrum of bone of skull | Finding site | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Encephalocele NOS | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Cranio-orbital remodelling for trigonocephaly | Procedure site | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Craniectomy for osteomyelitis | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Cranioplasty using bone graft | Procedure site - Direct (attribute) | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Cleft face | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Reopening of cranium and re-exploration of intracranial operation site and surgical arrest of postoperative bleeding (procedure) | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Cerebral laceration AND/OR contusion co-occurrent and due to closed skull fracture | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Congenital prognathism | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Closed fracture of symphysis of body of mandible (disorder) | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Encephalomyelocele | Finding site | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Cranioplasty using alloplastic material | Procedure site - Direct (attribute) | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Congenital abnormal fusion of basisphenoid bone | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Incomplete ossification of presphenoid bone | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Osteoradionecrosis of bone of skull | Finding site | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Trephination of cranium | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Closed skull fracture with subarachnoid, subdural AND/OR extradural hemorrhage | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Synotus | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Abscess of bone of skull | Finding site | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Replacement of Gardner Wells tongs of skull | Procedure site - Indirect (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Cranioplasty | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Podencephalus | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Occipital dysplasia | Finding site | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Excisional biopsy of skull | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Debridement of compound fracture of skull | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Replacement of caliper tongs of skull | Procedure site - Indirect (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Replacement of caliper tongs of skull | Procedure site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Agnathus | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Excision of lesion of cranium | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Benign neoplasm of bone of skull | Finding site | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Cranio-orbital remodelling, unspecified | Procedure site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Replacement of skull tongs | Procedure site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Overriding skull bones | Finding site | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Neoplasm of uncertain behavior of bone of skull | Finding site | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Multiple fractures of skull | Finding site | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Congenital mandibular hypoplasia | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Congenital macrognathism | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Replacement of Crutchfield tongs of skull | Procedure site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Replacement of Crutchfield tongs of skull | Procedure site - Indirect (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Open skull fracture without intracranial injury | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Craniotomy | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Paramedian facial cleft - Tessier cleft 3 | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Supraorbital facial cleft - Tessier cleft 9 | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Supraorbital facial cleft - Tessier cleft 10 (disorder) | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Removal of bone flap of skull | Procedure site - Direct (attribute) | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Strip craniectomy | Procedure site - Direct (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Removal of skull tongs with synchronous replacement | Procedure site - Indirect (attribute) | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Desmiognathus | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Closed fracture of skull NOS with intracranial injury, unspecified state of consciousness | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Open fracture of skull NOS with intracranial injury, with more than 24 hours loss of consciousness without return to pre-existing conscious level | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Cleft mandible | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Lack of ossification of presphenoid bone | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Congenital hypoplasia of supraoccipital bone | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Replacement of halo traction device of skull | Procedure site - Indirect (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Insertion of Gardner Wells tongs with synchronous skeletal traction | Procedure site - Direct (attribute) | False | Bone structure of cranium | Inferred relationship | Some | 2 | 
| Congenital absence of skull bone | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Dicephalus dipus dibrachius (disorder) | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Removal of Gardner Wells tongs from skull | Procedure site - Indirect (attribute) | True | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Dicephalus tripus tribrachius | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Removal of caliper tongs with synchronous replacement | Procedure site - Indirect (attribute) | False | Bone structure of cranium | Inferred relationship | Some | 1 | 
| Congenital cerebral meningocele | Finding site | False | Bone structure of cranium | Inferred relationship | Some | 2 |