3A20.0 Autoimmune haemolytic anaemia, warm type

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2026-01

Autoimmune haemolytic anaemia (AIHA) is an autoimmune disorder in which various types of auto-antibodies are directed against red blood cells causing their survival to be shortened and resulting in haemolytic anaemia. AIHA can be primary (idiopathic), secondary to infection or associated with diseases such as B-cell lymphomas, other systemic or organ-specific autoimmune diseases, Hodgkin's disease, hepatitis or primary immunodeficiencies, or, in the case of drug-induced AIHA, caused by a reaction to drugs.

exclusions

• Evans syndrome  (3A20.5)
• Haemolytic disease of fetus or newborn  (KA84)
• Paroxysmal cold haemoglobinuria  (3A20.3)

synonyms

• Autoimmune haemolytic anaemia, warm type
• AHA - [autoimmune haemolytic anaemia]
• Autoimmune haemolytic anaemia due to warm antibodies
• Autoimmune haemolytic disease warm type
• acquired autoimmune haemolytic anaemia
• autoimmune haemolytic anaemia
• haemolytic anaemia due to warm antibody
• other autoimmune haemolytic anaemias
• secondary autoimmune haemolytic anaemia
• secondary warm type haemolytic anaemia
• symptomatic autoimmune haemolytic anaemia
• symptomatic warm type haemolytic anaemia
• warm AIHA - [autoimmune haemolytic anaemia]
• warm autoimmune haemolytic anaemia
• warm type autoimmune haemolytic disease
• warm type haemolytic anaemia
• warm type secondary haemolytic anaemia
• warm type symptomatic haemolytic anaemia
• Dyke Young type anaemia
• secondary Dyke Young type anaemia
• Lederer anaemia
• acute Lederer haemolytic anaemia

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