- Cecocele - see Hernia
- Cecum - see condition
- Celiac
- Cell, cellular - see also condition
- Cellulitis (diffuse) (with lymphangitis) (see also Abscess) 682.9
- Cementoblastoma, benign (M9273/0) 213.1
- Cementoma (M9273/0) 213.1
- Cementoperiostitis 523.40
- Cephalgia, cephalagia (see also Headache) 784.0
- Cephalhematocele, cephalematocele
- Cephalhematoma, cephalematoma (calcified)
- Cephalic - see condition
- Cephalitis - see Encephalitis
- Cephalocele 742.0
- Cephaloma - see Neoplasm, by site, malignant
- Cephalomenia 625.8
- Cephalopelvic - see condition
- Cercomoniasis 007.3
- Cerebellitis - see Encephalitis
- Cerebellum (cerebellar) - see condition
- Cerebral - see condition
- Cerebritis - see Encephalitis
