- Hallucinosis 298.9
- Hallus - see Hallux
- Hallux 735.9
- Halo, visual 368.15
- Hamartoblastoma 759.6
- Hamartoma 759.6
- Hamartosis, hamartoses NEC 759.6
- Hamman's disease or syndrome (spontaneous mediastinal emphysema) 518.1
- Hamman-Rich syndrome (diffuse interstitial pulmonary fibrosis) 516.33
- Hammer toe (acquired) 735.4
- Hand - see condition
- Hand-foot syndrome 693.0
- Hand-Schüller-Christian disease or syndrome (chronic histiocytosis x) 277.89
- Hanging (asphyxia) (strangulation) (suffocation) 994.7
- Hangnail (finger) (with lymphangitis) 681.02
- Hangover (alcohol) (see also Abuse, drugs, nondependent) 305.0
- Hanot's cirrhosis or disease - see Cirrhosis, biliary
- Hanot-Chauffard (-Troisier) syndrome (bronze diabetes) 275.01
- Hansen's disease (leprosy) 030.9
- Harada's disease or syndrome 363.22
- Hard chancre 091.0
- Hard firm prostate 600.10
