- Pancytopenia (acquired) 284.1
- Panencephalitis - see also Encephalitis
- Panhematopenia 284.81
- Panhemocytopenia 284.81
- Panhypogonadism 257.2
- Panhypopituitarism 253.2
- Panic (attack) (state) 300.01
- Panmyelopathy, familial constitutional 284.09
- Panmyelophthisis 284.2
- Panmyelosis (acute) (M9951/1) 238.79
- Panner's disease 732.3
- Panneuritis endemica 265.0 [357.4]
- Panniculitis 729.30
- Panniculus adiposus (abdominal) 278.1
- Pannus (corneal) 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
- Papanicolaou smear
