| CAVH | kontinuierliche arterio-venöse (Spontan-) Hämofiltration |
| CAVHD | kontinuierliche arterio-venöse Hämodialyse |
| CAW | chefärztliche Wahlbehandlung |
| cb | centroblastisch |
| CBA | Complement Binding Antibody |
| CBC | cardiopulmonary bypass circuit |
| CBC | Complete Bloodcount |
| CBCL | kutane B-Zell Lymphome |
| CBG | Corticoid Binding Globulin |
| cc | centrocytisch |
| CC | common cold (virus) |
| CC | Collum Corpus (Winkel) (CCD) |
| CC | Comorbidity or Complications (als Fallerschwerend im DRG-System) |
| CC | commotio cerebri -Gehirnerschütterung |
| CCA | chicken cell agglutinating unit |
| CCA | Chimpanzee Coryza Agent |
| CCB | calcium channel blocker |
| CCC | Cholangiozelluläres Karzinom |
| CCD-Winkel | Centrum Collum Diaphysen (Winkel) |
| CCE | Keratokonjunktivitis epidemica |
| C-CHF | Congo Crimean Hemorrhagic Fever |
| CCK | Cholezystokinin |
| CCK-PZ | Cholezystokinin-Pankreozymin |
| ccm | ml (Cubiccm) |
| CCMP | kongestive Kardiomyopathie |
| CCNU | Lomustin |
| CCP | chronisch kalzifizierende Pankreatitis |
| CCPD | continuous cycling peritoneal dialysis |
| CCR | komplette Remission (s.a. PR) |
| CCS | Cronkhite-Canada-Syndrom (GI_Polyposis mit Hyperpim., Alopezie und Nagelatrophie) |