B98.0: Helicobacter pylori [H.pylori] as the cause of diseases classified to other chapters

Helicobacter pylori, or H.pylori, is a bacterium that can cause a range of diseases affecting different parts of the body. This bacterium often goes undetected because many people do not manifest symptoms. However, in some cases, it can cause inflammation and sores, known as ulcers, in the lining of your stomach or the upper part of your small intestine. For others, the infection could lead to stomach cancer. H.pylori infection can be transmitted from person to person through direct contact with saliva, feces (poop), or vomit. It can also be spread through food or water. Symptoms may include abdominal pain, bloating, frequent burping, lack of appetite, nausea, and unexplained weight loss. The progression of the disease can vary and would depend on the resulting condition. This means, for example, that an ulcer might heal and recur, while stomach cancer progresses steadily.