R71 - Abnormality of red blood cells
Excludes 1:
-anemias (D50-D64)
-anemia of premature infant P61.2)
-benign (familial) polycythemia D75.0)
-congenital anemias P61.2-P61.4)
-newborn anemia due to isoimmunization (P55.-)
-polycythemia neonatorum P61.1)
-polycythemia NOS D75.1)
-polycythemia vera (D45)
-secondary polycythemia D75.1)
R71.0 - Precipitous drop in hematocrit
R71.8 - Other abnormality of red blood cells