- Pneumohydrothorax (see also Hydrothorax) 511.8
- Pneumomediastinum 518.1
- Pneumomycosis 117.9
- Pneumonia (acute) (Alpenstich) (benign) (bilateral) (brain) (cerebral) (circumscribed) (congestive) (creeping) (delayed resolution) (double) (epidemic) (fever) (flash) (fulminant) (fungoid) (granulomatous) (hemorrhagic) (incipient) (infantile) (infectious) (infiltration) (insular) (intermittent) (latent) (lobe) (migratory) (newborn) (organized) (overwhelming) (primary) (progressive) (pseudolobar) (purulent) (resolved) (secondary) (senile) (septic) (suppurative) (terminal) (true) (unresolved) (vesicular) 486
- Pneumonic - see condition
- Pneumonitis (acute) (primary) (see also Pneumonia) 486
- Pneumonoconiosis - see Pneumoconiosis
- Pneumoparotid 527.8
- Pneumopathy NEC 518.89
- Pneumopericarditis (see also Pericarditis) 423.9
- Pneumopericardium - see also Pericarditis
- Pneumoperitoneum 568.89
- Pneumophagia (psychogenic) 306.4
- Pneumopleurisy, pneumopleuritis (see also Pneumonia) 486
- Pneumopyopericardium 420.99
- Pneumopyothorax (see also Pyopneumothorax) 510.9
- Pneumorrhagia 786.3
- Pneumosiderosis (occupational) 503
- Pneumothorax (acute) (chronic) 512.8
- Pocket(s)
- Podagra 274.9
- Podencephalus 759.89
