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

U09: Post COVID-19 condition

Post COVID-19 condition refers to a group of health issues that people can experience after recovering from the acute phase of COVID-19, the disease caused by the SARS-CoV-2 virus. This condition can impact anyone who's had COVID-19, regardless of the illness's severity. The range of potential post-COVID-19 symptoms is broad, including persistent difficulties with breathing, fatigue, brain fog, sleep disorders, inconsistencies in heart rate, distressing psychiatric disorders, and a general function decline that persists beyond the expected recovery time. These long-haul symptoms can affect various systems in the body, such as the respiratory system, the cardiovascular system, and the nervous system. The mechanisms that cause these post-acute symptoms are still being investigated, but some theories suggest it might be due to an overactive immune response, persistent viral activity, or organ damage due to the initial infection.