A98: Other viral haemorrhagic fevers, not elsewhere classified

The A98 ICD-10 group refers to a set of conditions collectively known as the viral haemorrhagic fevers, not classified elsewhere. These are severe, often life-threatening diseases caused by specific types of viruses. Transmission to humans frequently occurs through bites or exposure to animals such as rodents, bats, or insects, although person-to-person spread is also possible. Infected individuals commonly experience high fever, fatigue, and muscle and joint pain. As the conditions progress, they can lead to significant bleeding and organ failure, particularly affecting the liver and kidneys. Early signs might be non-specific and resemble the flu, but advanced stages are usually marked by severe symptoms including bleeding, shock, and, in some cases, multi-organ failure. These diseases occur globally and can lead to outbreaks, particularly in certain endemic regions. Advanced medical care is typically required to manage these conditions due to their high severity and complex nature.