- Cerebrohepatorenal syndrome 759.89
- Cerebromacular degeneration 330.1
- Cerebromalacia (see also Softening, brain) 434.9
- Cerebrosidosis 272.7
- Cerebrospasticity - see Palsy, cerebral
- Cerebrospinal - see condition
- Cerebrum - see condition
- Ceroid storage disease 272.7
- Cerumen (accumulation) (impacted) 380.4
- Cervical - see also condition
- Cervicalgia 723.1
- Cervicitis (acute) (chronic) (nonvenereal) (subacute) (with erosion or ectropion) 616.0
- Cervicoaural fistula 744.49
- Cervicocolpitis (emphysematosa) (see also Cervicitis) 616.0
- Cervix - see condition
- Cesarean delivery, operation or section NEC 669.7
- Céstan's syndrome 344.89
- Céstan-Chenais paralysis 344.89
- Céstan-Raymond syndrome 433.8
- Cestode infestation NEC 123.9
- Cestodiasis 123.9
- CGF (congenital generalized fibromatosis) 759.89