White blood cells (WBCs), also called leukocytes or leucocytes, are the cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders. All white blood cells are produced and derived from multipotent cells in the bone marrow known as hematopoietic stem cells.
Nicotine dependence is now recognized as a psychoactive substance dependence disorder (DSM-IV, ICD-10). Under the DSM-IV criteria smokers are classified as dependent if they exhibit impaired control and continue to smoke despite awareness that it exacerbates a medical condition, and if they experience withdrawal symptoms when abstaining from smoking, or if they have a history of unsuccessful attempts at quitting.
Individual code category: Chapter 5 of ICD-10 has a code category specifically for Nicotine dependence (F17), as opposed to ICD-9 which lumps the all inclusive âTobacco Use Disorderâ code along with abuse of alcohol and other substances under code category 305 (Nondependent Use of Drugs).arch 25, 2015 8:00 AM â¢ Coding and Billing â¢ No Comments. This is Part 2 of our series on the differences between ICD-9 and ICD-10 in coding substance use, abuse, and dependence. Read Part 1 on guidelines and hierarchies here.