| Abbreviations | Meaning |
 | CDO | Congenital Duodenal Obstruction |
 | CAMV | Congenital Anomaly Of Mitral Valve |
 | CTEV | Congenital Talipes Equinovarus |
 | CMG | Canine Or Congenital Myasthenia Gravis; Case Mix Group; Chopped Meat Glucose [medium]; Cystometrography, Cystometrogram |
 | MACDP | Metropolitan Atlanta Congenital Defects Program |
 | CIE | Congenital Ichthyosiform Erythroderma |
 | LCA | Leber Congenital Amaurosis |
 | NCRSP | National Congenital Rubella Surveillance Programme [UK] |
 | CNS | Congenital Nephrotic Syndrome |
 | CDG | Congenital Disorders Of Glycosylation |
 | CGFH | Congenital Fibrous Histiocytoma |
 | CVM | Congenital Vascular Malformation |
 | NHS-1 | First Natural History Study [of Congenital Heart Defects] |
 | HYCX | Hydrocephalus Due To Congenital Stenosis Of Aqueduct Of Sylvius |
 | CCVM | Congenital Cardiovascular Malformation |