K27: Peptic ulcer, site unspecified

Peptic ulcer disease, unspecified site, encompasses a group of conditions that involve the formation of painful sores, known as ulcers, in the lining of the stomach or the upper part of the small intestine. These ulcers can occur due to a variety of factors, most commonly the destruction of the protective mucous lining caused by long-term use of nonsteroidal anti-inflammatory medications, or an infection from a bacterium called Helicobacter pylori. The typical symptom of peptic ulcer disease is a burning stomach pain, which could be mistaken for indigestion or heartburn. The pain can worsen between meals and during the night. If left untreated, the ulcer can lead to more dangerous conditions like bleeding or perforation (hole through the wall of stomach or intestine), and obstruct the passage of food through the digestive tract. These are serious conditions that require immediate attention. The disease affects the digestive system and its progression varies depending on individual health circumstances and the duration of the ulcer.