Former NYC Mayor Koch Released From Hospital Former New York City Mayor Ed Koch (KAHCH') is back home after a weeklong stay in a hospital. The 88-year-old Koch was admitted to NewYork-Presbyterian/Columbia hospital last Saturday with fluid in his lungs and swollen ankles. FILE - In this March 1, 2011 file photo, former New York Mayor Ed Koch speaks during a news conference in Albany, N.Y. Koch, 88, was released from a New York City hospital on Saturday, Jan. 26, 2013. This was Koch's third hospital stay since September 2012. (AP Photo/Mike Groll, File) Close He had been originally set to be released Monday, but his doctors sent him home early on Saturday. Koch says he was delighted to go home. He says he expects to be back in his office at the beginning of the week. Doctors have told Koch to reduce his salt intake.