D47: Other neoplasms of uncertain or unknown behaviour of lymphoid, haematopoietic and related tissue

D47.7: Other specified neoplasms of uncertain or unknown behaviour of lymphoid, haematopoietic and related tissue

The bone marrow is inside bone. The blood cells are formed in the bone marrow of some of the bones. There are 3 different types of blood cell: red blood cells, white blood cells and platelets. Red blood cells are important for carrying oxygen in the blood. White blood cells are part of the body’s immune system. They fight pathogens. Platelets are important for clotting blood. The immune cells (defense cells) from the bone marrow, lymph nodes and various organs together make up the immune system.

You have disease of the immune system or the bone marrow. It is not known exactly whether the disease is benign or malignant.