U00-U49: Provisional assignment of new diseases of uncertain etiology or emergency use

U25: Emergency use of U25

The U25 ICD-10 code is currently listed as "unassigned" in the World Health Organization's 2016 classification. This means that it doesn't point to a specific condition or group of conditions. Instead, the U25 designation might be used in an emergency situation when a novel or not yet classified condition needs to be accounted for in healthcare documentation. It is important to remember that this is a temporary categorization only, and once more information about the new or novel condition becomes available, an appropriate classification will be assigned. As such, the attributes of a U25 categorized condition such as method of transmission, symptoms, or disease progression will differ based on its unique characteristics.