R70-R79: Abnormal findings on examination of blood, without diagnosis

R71: Abnormality of red blood cells

Blood is made up of a liquid part and different blood cells, among other things. The blood cells include the red blood cells, the white blood cells and the platelets. The red blood cells carry oxygen from the lungs throughout the body.

If the red blood cells have changed, they may be of a different shape or different size, for example. There are many different reasons for this. For example, these changes may occur if the red blood cells are not being formed properly.