Name WHO ICD10 MeSH Langerhans cell histiocytosis (LCH) I D76.0 Langerhans-cell histiocytosis Juvenile xanthogranuloma (JXG) II D76.3 non-Langerhans-cell histiocytosis Hemophagocytic lymphohistiocytosis (HLH) II D76.1 non-Langerhans-cell histiocytosis Niemann–Pick disease II E75.2 non-Langerhans-cell histiocytosis Sea-blue histiocytosis II - non-Langerhans-cell histiocytosis Acute monocytic leukemia III C93.0 malignant histiocytic disorders Malignant histiocytosis III C96.1 malignant histiocytic disorders Erdheim–Chester disease II C96.1 malignant histiocytic disorders