International Red Cross officials visited Saddam Hussein at his secret prison on Tuesday, the eve of his birthday, a US military spokesman said.
"Today a visit between Saddam Hussein and authorised members of the International Committee of the Red Cross occurred at an undisclosed location," Brigadier General Mark Kimmitt told a news conference.
It was the second visit by the Red Cross to Saddam.
The former Iraqi president, toppled a year ago by the US invasion and captured in December, will spend his first birthday in captivity on Wednesday when he turns 67.
The Red Cross first visited Saddam on February 21, more than two months after he was found hiding in a hole near his hometown of Tikrit.