ICD-10-CM > R00-R99 > R70-R79 > R71 R71 Abnormality of red blood cells Non-Billable/Non-Specific Type 1 Excludes 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) Codes R71.0Precipitous drop in hematocritR71.8Other abnormality of red blood cells