A00-A09: Intestinal infectious diseases

A09: Other gastroenteritis and colitis of infectious and unspecified origin

The ICD-10 group range A09 refers to gastroenteritis and colitis of infectious and unspecified origin. These are conditions that affect the digestive system, specifically the stomach and intestines, and can have various potential causes, including infections by bacteria, viruses, or parasites. Transmission of these diseases typically occurs through contaminated food or water, or through contact with an infected person. Common symptoms include diarrhea, stomach pain, nausea, vomiting, and sometimes fever. The severity and duration of these conditions can vary, but they usually resolve on their own in a few days. However, complications can arise including dehydration or malnutrition, especially in vulnerable individuals such as young children and the elderly. It is essential to maintain good hydration while these conditions run their course.