| Abbreviations | Meaning |
 | ACED | Anhidrotic Congenital Ectodermal Dysplasia |
 | CSHRH | Congenital Self-healing Reticulohistiocytosis |
 | CAR | Congenital Articular Rigidity |
 | CC-TGA | Congenitally Corrected Transposition Of Great Vessels |
 | CRD | Congenital Rubella Deafness |
 | CIA | Chemiluminescent Immunoassay; Chymotrypsin Inhibitor Activity; Colony-inhibiting Activity; Congenital Intestinal Aganglionosis |
 | CSNB | Congenital Stationary Night Blindness |
 | CPL | Caprine Placental Lactogen; Conditioned Pitch Level; Congenital Pulmonary Lymphangiectasia |
 | CHHS | Congenital Hypothalamic Hamartoma Syndrome |
 | LCAH | Lipoid Congenital Adrenal Hyperplasia |
 | CHBHA | Congenital Heinz Body Hemolytic Anemia |
 | NHS-1 | First Natural History Study [of Congenital Heart Defects] |
 | CLAH | Congenital Lipoid Adrenal Hyperplasia |
 | CDG | Congenital Disorders Of Glycosylation |
 | NCRSP | National Congenital Rubella Surveillance Programme [UK] |