- Prizefighter ear 738.7
- Problem (with) V49.9
- Procedure (surgical) not done NEC V64.3
- Procidentia
- Proctalgia 569.42
- Proctitis 569.49
- Proctocele
- Proctocolitis, idiopathic 556.2
- Proctoptosis 569.1
- Proctosigmoiditis 569.89
- Proctospasm 564.6
- Prodromal-AIDS - see Human immunodeficiency virus (disease) (illness) (infection)
- Profichet's disease or syndrome 729.9
- Progeria (adultorum) (syndrome) 259.8
- Prognathism (mandibular) (maxillary) 524.00
- Progonoma (melanotic) (M9363/0) - see Neoplasm, by site, benign
- Progressive - see condition
- Prolapse, prolapsed
- Prolapsus, female 618.9
- Proliferative - see condition
- Prolinemia 270.8
- Prolinuria 270.8
