Ⅲ.Diseases of the blood and bloodforming organs and certain disorders involving the immune mechanism (D50-D89)D50-D53.Nutritional anaemiasD50.Iron deficiency anaemiaD50.0.Iron deficiency anaemia secondary to blood loss chronicD50.1.Sideropenic dysphagiaD50.8.Other iron deficiency anaemiasD50.9.Iron deficiency anaemia, unspecified D51.Vitamin B12 deficiency anaemiaD51.0.Vitamin B12 deficiency ana..