COVID-19 Infection NCIt COVID-19 Terminology NCIt COVID-19 Clinical Terminology SeroNet Authorized Values Post-Acute Sequelae of COVID-19 Disease or Syndrome Symptoms that significantly impair quality of life, which started during or after probable or confirmed acute COVID-19 and have persisted 4 wk to 3 mo after the initial diagnosis of COVID-19 A constellation of signs and symptoms that can persist for weeks or months after acute infection with SARS-CoV-2, or appear weeks after infection. This condition may be characterized by fatigue, shortness of breath, difficulty focusing or concentrating ("brain fog"), sleep disorders, fevers, gastrointestinal symptoms, anxiety, and depression. Long COVID Post-Acute Sequelae of COVID-19 Long COVID-19 Syndrome Postacute sequelae of SARS-CoV-2 infection (PASC) C179263 SeroNet Post-Acute Sequelae of COVID-19 ACC/AHA CL1643946 PASC Unknown SeroNet Study Descriptors ACC/AHA Cardiovascular and Noncardiovascular Complications of COVID-19 Terminology Appendix 3: COVID-19 Diagnosis Terminology ACC/AHA COVID-19 Appendix Variables No Yes