Secondary polycythemia

**Inclusion terms:** - Acquired polycythemia - Emotional polycythemia - Erythrocytosis NOS - Hypoxemic polycythemia - Nephrogenous polycythemia - Polycythemia due to erythropoietin - Polycythemia due to fall in plasma volume - Polycythemia due to high altitude - Polycythemia due to stress - Polycythemia NOS - Relative polycythemia

**Excludes1:** - polycythemia neonatorum (P61.1) - polycythemia vera (D45)