- Epidermoid
- Epidermolysis
- Epidermophytid - see Dermatophytosis
- Epidermophytosis (infected) - see Dermatophytosis
- Epidermosis, ear (middle) (see also Cholesteatoma) 385.30
- Epididymis - see condition
- Epididymitis (nonvenereal) 604.90
- Epididymo-orchitis (see also Epididymitis) 604.90
- Epidural - see condition
- Epigastritis (see also Gastritis) 535.5
- Epigastrium, epigastric - see condition
- Epigastrocele (see also Hernia, epigastric) 553.29
- Epiglottiditis (acute) 464.30
- Epiglottis - see condition
- Epiglottitis (acute) 464.30
- Epignathus 759.4
- Epilepsia
- Epilepsy, epileptic (idiopathic) 345.9
- Epileptiform
- Epiloia 759.5
- Epimenorrhea 626.2
- Epipharyngitis (see also Nasopharyngitis) 460