An analysis from the Centers for Disease Control and Prevention indicates that among the 106,543 (85%) surviving patients hospitalized for COVID-19, 9% were readmitted to the same hospital within two months of discharge through August 2020. More than a single readmission occurred among 1.6% of patients discharged after the index hospitalization.
The report can be obtained at https://www.cdc.gov/mmwr/volumes/69/wr/pdfs/mm6945e2-H.pdf.