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

U10: Multisystem inflammatory syndrome associated with COVID-19

Multisystem inflammatory syndrome associated with COVID-19 is a group of conditions that impact multiple body systems and are linked to exposure to COVID-19. Usually occurring in children and young adults, it affects systems like the heart, lungs, kidneys, brain, skin, and gastrointestinal tract. It is linked to the inflammation caused by the body's response to the coronavirus. Symptoms can vary widely but may include persistent fever, abdominal pain, vomiting, diarrhea, rash, and feeling unusually fatigued. Also, some affected individuals may exhibit symptoms similar to Kawasaki disease, a condition that causes inflammation in the walls of some blood vessels in the body. The disease progression can range from mild symptoms to severe complications requiring hospitalization.