Biden's spokeswoman, Elizabeth Alexander, says in a statement that Catherine Eugenia "Jean" Biden was admitted Sunday to the University of Pennsylvania Hospital in Philadelphia and "is currently receiving treatment and is in good spirits."
Alexander did not immediately return messages seeking details about Biden's condition.
A hospital spokeswoman confirms that Biden's mother was admitted Sunday, but said she is not authorized to release any further information.
Jean Biden was on stage with her son at President Barack Obama's election night rally in Chicago. She lives in a guesthouse at Biden's home in Greenville, a suburb of Wilmington.