- Folie a deux 297.3
- Follicle
- Folliclis (primary) (see also Tuberculosis) 017.0
- Follicular - see also condition
- Folliculitis 704.8
- Folliculosis, conjunctival 372.02
- Føllling's disease (phenylketonuria) 270.1
- Follow-up (examination) (routine) (following) V67.9
- Fong's syndrome (hereditary osteoonychodysplasia) 756.89
- Food
- Foot - see also condition
- Foramen ovale (nonclosure) (patent) (persistent) 745.5
- Forbes' (glycogen storage) disease 271.0
- Forbes-Albright syndrome (nonpuerperal amenorrhea and lactation associated with pituitary tumor) 253.1
- Forced birth or delivery NEC 669.8
- Forceps
- Fordyce's disease (ectopic sebaceous glands) (mouth) 750.26
- Fordyce-Fox disease (apocrine miliaria) 705.82
- Forearm - see condition
- Foreign body
- Forking, aqueduct of Sylvius 742.3
- Formation
