• abnormal findings on antenatal screening of mother (O28.-)
  • abnormalities of lipids (E78.-)
  • abnormalities of platelets and thrombocytes (D69.-)
  • abnormalities of white blood cells classified elsewhere (D70-D72)
  • coagulation hemorrhagic disorders (D65-D68)
  • diagnostic abnormal findings classified elsewhere - see Alphabetical Index
  • hemorrhagic and hematological disorders of newborn (P50-P61)
  1. R71 Abnormality of red blood cells


    • 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)
    1. R71.0 Precipitous drop in hematocrit

      Inclusion term(s):

      • Drop (precipitous) in hemoglobin
      • Drop in hematocrit
    2. R71.8 Other abnormality of red blood cells

      Inclusion term(s):

      • Abnormal red-cell morphology NOS
      • Abnormal red-cell volume NOS
      • Anisocytosis
      • Poikilocytosis
Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.