Washington (CNN) – Rep. Bill Young of Florida, the longest-serving Republican member of the House, is "gravely ill," his family said in a statement Wednesday.
"[Young's] condition turned for the worse over night and he is gravely ill. His doctors say his prognosis is guarded," the statement read.
Young, 82, was absent from the House vote Wednesday night to reopen the government and raise the debt ceiling.
The 22-term representative announced last week he won't run for another term next year.
"It's my time," Young told the Tampa Bay Times in a phone interview. As to why he was retiring now, Young said, "I don't know that I would pick out one thing. It's a lot of things."
Among them, Young said, is his disappointment with congressional gridlock. "I'm a little disappointed. It seems there's too much politics. It's a different Congress," he told the Times.
Young has been in the Capitol and seen around the Hill since he announced his retirement.
Young was first elected to the House in November 1970. In total, after serving 10 years in the Florida State Senate and 43 years in the House, Young has spent more than half a century in elected office. He has served with a total of eight presidents.
During his tenure, Young has been heralded for his expertise on defense issues – and chaired both the full House Appropriations committee and its defense subcommittee during his time on Capitol Hill.