His manager confirmed the news to EW.
No cause of death was provided, but the actor was struggling with manic depression when he died.
Born on Sept. 17, 1979, in Tulsa, Okla., Miller grew up in Texas.
Billy Miller.Leon Bennett/FilmMagic
He would have turned 44 on Sunday.
I’m gonna miss that mischievous smile.
Love you, Billy."
Light and love to his family and friends."
“Your quiet intensity on screen was second only to your gentle kindness and genuine care in private.
You were bigger and braver and bolder than this life.
You were legend.”
He continued, “There is no landing to this final cliffhanger.
As a young actor, Miller got his start in an episode ofCSI: NYin 2006.
He landed a series regular role onAll My Childrenthe following year.
He appeared on the show through 2014, during which he was lauded by critics and audiences.
Miller took home three Daytime Emmys for his performance as the character.
His other roles included recurring stints onRinger,Suits,Ray Donovan, andTruth Be Told.
