D59.1Other autoimmune hemolytic anemias

D59.1 is the ICD-10-CM diagnosis code for other autoimmune hemolytic anemias. It belongs to category D59 (acquired hemolytic anemia), block D55-D59 (hemolytic anemias) and chapter 3 (diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

Within D59, choose D59.1 (Other autoimmune hemolytic anemias) only when documentation doesn't support a more specific option: drug-induced autoimmune hemolytic anemia (D59.0), drug-induced nonautoimmune hemolytic anemia (D59.2), hemolytic-uremic syndrome (D59.3), other nonautoimmune hemolytic anemias (D59.4), paroxysmal nocturnal hemoglobinuria [Marchiafava-Micheli] (D59.5), hemoglobinuria due to hemolysis from other external causes (D59.6), other acquired hemolytic anemias (D59.8) and unspecified (D59.9).

To report this condition, pick the subcode that matches the documentation: D59.10 (unspecified), D59.11 (anemia), D59.12 (anemia), D59.13 (anemia) and D59.19 (anemia).

The conditions in its Excludes2 note aren't part of D59.1, but may be coded alongside it if the patient has both: Evans syndrome (D69.41), hemolytic disease of newborn (P55.-) and paroxysmal cold hemoglobinuria (D59.6).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2021 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 283.0 (autoimmune hemolytic anemias).