- Pollitzer's disease (hidradenitis suppurativa) 705.83
- Polyadenitis (see also Adenitis) 289.3
- Polyalgia 729.90
- Polyangiitis (essential) 446.0
- Polyarteritis (nodosa) (renal) 446.0
- Polyarthralgia 719.49
- Polyarthritis, polyarthropathy NEC 716.59
- Polycarential syndrome of infancy 260
- Polychondritis (atrophic) (chronic) (relapsing) 733.99
- Polycoria 743.46
- Polycystic (congenital) (disease) 759.89
- Polycythemia (primary) (rubra) (vera) (M9950/1) 238.4
- Polycytosis cryptogenica 289.0
- Polydactylism, polydactyly 755.00
- Polydipsia 783.5
- Polydystrophic oligophrenia 277.5
- Polyembryoma (M9072/3) - see Neoplasm, by site, malignant
- Polygalactia 676.6
- Polyglandular
- Polyhydramnios (see also Hydramnios) 657
- Polymastia 757.6
- Polymenorrhea 626.2
