Other nonautoimmune hemolytic anemias

This code signifies hemolytic anemias that are not caused by an autoimmune process. It encompasses a diverse group of conditions where red blood cells are prematurely destroyed due to various intrinsic or extrinsic factors, excluding those where the body's immune system attacks its own red blood cells.

Use this code for hemolytic anemias stemming from non-immune causes, such as certain drug-induced hemolytic anemias (without an immune mechanism), microangiopathic hemolytic anemias (e.g., TTP, HUS, if not specified elsewhere), or other acquired forms not classified as autoimmune. Documentation should clearly state the hemolytic nature of the anemia and explicitly rule out an autoimmune etiology.

• Always seek documentation clarifying the specific cause of the hemolytic anemia; if an autoimmune cause is identified, a more specific code from D59.0-D59.3 should be used.
• Do not use this code if the hemolytic anemia is congenital or hereditary (e.g., sickle cell anemia, thalassemia), as these have their own specific codes.
• Consider additional codes for any underlying conditions or external causes contributing to the nonautoimmune hemolysis (e.g., drug codes, codes for infections).