Murcer was receiving medical care in Oklahoma after treatment for cancer forced him to curtail his schedule this month.
The 62-year-old former star outfielder had surgery in December 2006, four days after being diagnosed with a malignant brain tumor.
He returned to the broadcast booth last season. His March biopsy showed no cancer, and Murcer broadcast his first game of the season May 2.
Murcer played 17 seasons in the majors with the Yankees, San Francisco Giants and Chicago Cubs from 1965-83. He batted .277 with 252 home runs. He had been a Yankees broadcaster for 23 seasons.