| Abbreviations | Meaning |
 | CAR | Congenital Articular Rigidity |
 | CET | Capital Expenditure Threshold; Cholesterol-ester Transfer; Collaborative Eclampsia Trial; Congenital Eyelid Tetrad |
 | CAVD | Congenital Aplasia Of Vas Deferens |
 | CNDI | Congenital Nephrogenic Diabetes Insipidus |
 | CSNA | Congenital Sensory Neuropathy With Anhidrosis [syndrome] |
 | ACED | Anhidrotic Congenital Ectodermal Dysplasia |
 | CNF | Congenital Nephrotic Syndrome Of The Finnish [type] |
 | CAV | Congenital Adrenal Virilism |
 | CHA | Congenital Hypoplastic Anemia |
 | CHILD SYNDROME | Congenital Hemidysplasia With Ichthyosiform Erythrodermal And Limb Defects |
 | CROME | Congenital Cataracts-epileptic Fits-mental Retardation (syndrome) |
 | CMSD | Congenital Myocardial Sympathetic Dysinnervation |
 | CHD | Congenital Or Congestive Heart Disease |
 | HYCX | Hydrocephalus Due To Congenital Stenosis Of Aqueduct Of Sylvius |
 | CUD | Cause Undetermined; Congenital Urinary Deformity |