- Chemotherapy
- Cherubism 526.89
- Chest - see condition
- Cheyne-Stokes respiration (periodic) 786.04
- Chiari's
- Chiari-Frommel syndrome 676.6
- Chicago disease (North American blastomycosis) 116.0
- Chickenpox (see also Varicella) 052.9
- Chiclero ulcer 085.4
- Chiggers 133.8
- Chignon 111.2
- Chigoe disease 134.1
- Chikungunya fever 066.3
- Chilaiditi's syndrome (subphrenic displacement, colon) 751.4
- Chilblains 991.5
- Child
- Childbed fever 670
- Childbirth - see also Delivery
- Childhood, period of rapid growth V21.0
- Chill(s) 780.99
- Chilomastigiasis 007.8
- Chin - see condition
