| Abbreviations | Meaning |
 | ACED | Anhidrotic Congenital Ectodermal Dysplasia |
 | CHD | Congenital Heart Disease |
 | SCA | Severe Congenital Anomaly |
 | CPVD | Congenital Polyvalvular Disease |
 | CVT | Cardiovascular Technologist; Central Venous Temperature; Cerebral Venous Thrombosis; Congenital Vertical Talus |
 | CEP | Congenital Erythropoietic Porphyria |
 | CCA | Congenital Contractural Arachnodactyly |
 | CIBHA | Congenital Inclusion-body Hemolytic Anemia |
 | CVAH | Congenital Virilizing Adrenal Hyperplasia |
 | COIF | Congenital Onychodysplasia Of The Index Finger |
 | CAV | Congenital Absence Of Vagina |
 | CC-TGA | Congenitally Corrected Transposition Of Great Vessels |
 | CHS | Congenital Heart Surgeons Society [study] |
 | COACH | Canadian Organization For The Advancement Of Computers In Health; Cerebellar Vermis Hypoplasia/aplasia-oligophrenia-congenital Ataxia-ocular Colobomata-hepatic Fibrosis [syndrome] |
 | CHD | Congenital Dislocation Of The Hip |