- Positive
- Post-dates (pregnancy) - see Pregnancy
- Post-term (pregnancy) 645.1
- Post-transplant lymphoproliferative disorder (PTLD) 238.77
- Post-Traumatic Stress Disorder (PTSD) 309.81
- Post-typhoid abscess 002.0
- Postcardiotomy syndrome 429.4
- Postcaval ureter 753.4
- Postcholecystectomy syndrome 576.0
- Postclimacteric bleeding 627.1
- Postcommissurotomy syndrome 429.4
- Postconcussional syndrome 310.2
- Postcontusional syndrome 310.2
- Postcricoid region - see condition
- Postencephalitic - see also condition
- Posterior - see condition
- Posterolateral sclerosis (spinal cord) - see Degeneration, combined
- Postexanthematous - see condition
- Postfebrile - see condition
- Postgastrectomy dumping syndrome 564.2
- Posthemiplegic chorea 344.89
- Posthemorrhagic anemia (chronic) 280.0