The network says Reid died Wednesday.
She was among the original cast of the daytime soap opera, which premiered in 1965. Reid starred opposite Macdonald Carey, who played her husband until his death in 1994.
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Her final appearance as a regular was in 2007.
Reid made appearances on episodic TV and other soaps including "As the World Turns." In the 1950s, she performed on anthologies such as "Studio One" and "Philco Television Playhouse" during what is recalled as TV's Golden Age.
Reid received the Daytime Emmys' Lifetime Achievement Award in 2004.
She was born in Wichita Falls, Texas, in 1914.