- Parsonage-Turner syndrome 353.5
- Particolored infant 757.39
- Parturition - see Delivery
- Parvovirus 079.83
- Passage
- Passive - see condition
- Pasteurella septica 027.2
- Pasteurellosis (see also Infection, Pasteurella) 027.2
- PAT (paroxysmal atrial tachycardia) 427.0
- Patau's syndrome (trisomy D1) 758.1
- Patch
- Patches
- Patellar - see condition
- Patellofemoral syndrome 719.46
- Patent - see also Imperfect closure
- Paternity testing V70.4
- Paterson (-Brown) (-Kelly) syndrome (sideropenic dysphagia) 280.8
- Paterson's syndrome (sideropenic dysphagia) 280.8
- Paterson-Kelly syndrome or web (sideropenic dysphagia) 280.8
- Pathologic, pathological - see also condition
- Pathology (of) - see also Disease
- Patterned motor discharge, idiopathic (see also Epilepsy) 345.5
