- Punch drunk 310.2
- Puncta lacrimalia occlusion 375.52
- Punctiform hymen 752.49
- Puncture (traumatic) - see also Wound, open, by site
- Pupil - see condition
- Pupillary membrane 364.74
- Pupillotonia 379.46
- Purpura 287.2
- Purpuric spots 782.7
- Purulent - see condition
- Pus
- Pustular rash 782.1
- Pustule 686.9
- Putnam's disease (subacute combined sclerosis with pernicious anemia) 281.0 [336.2]
- Putnam-Dana syndrome (subacute combined sclerosis with pernicious anemia) 281.0 [336.2]
- Putrefaction, intestinal 569.89
- Putrescent pulp (dental) 522.1
- Pyarthritis - see Pyarthrosis
- Pyarthrosis (see also Arthritis, pyogenic) 711.0
- Pycnoepilepsy, pycnolepsy (idiopathic) (see also Epilepsy) 345.0
- Pyelectasia 593.89
- Pyelectasis 593.89
