- Pancytolysis 289.9
- Pancytopenia (acquired) 284.8
- Panencephalitis - see also Encephalitis
- Panhematopenia 284.8
- Panhemocytopenia 284.8
- Panhypogonadism 257.2
- Panhypopituitarism 253.2
- Panic (attack) (state) 300.01
- Panmyelopathy, familial constitutional 284.0
- Panmyelophthisis 284.9
- Panmyelosis (acute) (M9951/1) 238.7
- Panner's disease 732.3
- Panneuritis endemica 265.0 [357.4]
- Panniculitis 729.30
- Panniculus adiposus (abdominal) 278.1
- Pannus 370.62
- Panophthalmitis 360.02
- Panotitis - see Otitis media
- Pansinusitis (chronic) (hyperplastic) (nonpurulent) (purulent) 473.8
- Panuveitis 360.12
- Panvalvular disease - see Endocarditis, mitral
- Papageienkrankheit 073.9