ICD-10-CM › R00-R99 › R70-R79 › R71 Abnormality of red blood cells › R71.0

R71.0

Precipitous drop in hematocrit

ValidICD-10-CM diagnosis code.

Valid for claims with a date of service in the current code year.

Valid FY2016 onwards.

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2007 Added to the draft code set draft Precipitous drop in hematocrit

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from R71 Abnormality of red blood cells

Excludes1 - never coded here

  • 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)

Inherited from the R70-R79 section Abnormal findings on examination of blood, without diagnosis (R70-R79)

Excludes2 - not included here

  • 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)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Codes in the same group

CodeDescriptionStatus
R71.8 Other abnormality of red blood cells Valid