I am 51 year old female. Gall bladder removed at 15, lung cancer with upper left lobe removed at 42. My billirubin is 2.41. I have muscle and joint pain and excessive fatigue. I also have rare type of anemia that causes cells to die off prematurely . Lung surgery left me with chronic pain throughout upper left quadrant As a result I am on 10 mg hydro codeine 4 x day and 30 mg er morphine 3 x day. What are possible reasons for high billirubin ?