The actress played Libby Kennedy on the Aussie soap for a decade before leaving to tour with the musical Dirty Dancing in 2004.
"I am hugely loyal to the show and I'm ready to go back and do what I love," Kym told the Sunday Herald Sun.
Valentine took a break from acting due to medical reasons after completing work on Dirty Dancing.
"Physically and mentally I needed a rest," she explained. "I discovered I had a hernia in my stomach when I was doing the Sydney season. When I went to hospital after the tour they found I had three hernias. So now I have a 1 1/2 inch scar on my stomach. You won't see me in a bikini on Neighbours."
More: Soaps, Neighbours
Soap Scoop
Home and Away relationship twists - PicsWe take an in-pictures look at next week's Home and Away episodes.
Soaps Interviews
Emmerdale star talks John death aftermathWe chat to Emmerdale's Adam Thomas about John's death and more.
Soap Ratings
'Emmerdale' John, Moira plot takes 7.7mEmmerdale continues to perform strongly on Wednesday evening.
Reality Bites
'Big Fat Gypsy Weddings' returns: ReviewReality Bites's verdict on the return of Big Fat Gypsy Weddings.
