K63: Other diseases of intestine
K63.3: Ulcer of intestine
The small intestine is the longest section of the digestive tract. It consists of 3 sections. The 1st section begins immediately after the stomach and is called the duodenum. The gallbladder and the pancreas secrete the digestive juices in this section. The jejunum and ileum sections come next. The nutrients are absorbed into the blood from the food in the small intestine. The small intestine is followed by the large intestine.
The intestines are lined with mucous membrane. The mucous membrane can become inflamed and thus damaged. If the mucous membrane is severely damaged, an open sore can then be formed.
If the mucous membrane in the small intestine is damaged, this may for instance cause bleeding in the intestines. You may then see blood in your feces, or the feces will have a black appearance. You may also have pain in your abdomen. It is also possible that you will feel nauseated.
Patient Disclaimer
The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.
If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.