Goldstein sent a text message to a friend at approximately 1AM on Friday morning about his scheduled appearance that night at Las Vegas' Rain Nightclub. A friend subsequently called 911 later on Friday after Goldstein failed to answer his phone when it was time for him to catch his flight, Peoplereported.
The New York City Medical Examiners office announced that an initial autopsy proved "inconclusive," People reported, adding additional tests -- including a toxicology report -- would be performed but might take weeks until results are known.
NYPD Deputy Commissioner Paul Browne told People there was no apparent evidence of foul play.
Goldstein posted a message on his Twitter page late Tuesday night that he had just finished filming Gone Too Far-- a new MTV reality series that would follow the celebrity DJ as he helped young people overcome various addictions.
The eight-episode series was slated to debut October 5 on MTV.
"Adam 'DJ AM' Goldstein's death is an incredible loss to the music community, his friends, family and his fans, and those of us who had the privilege of working with him," MTV said in a Friday statement.
"MTV was honored to support him as he helped young people battle their own addictions. Our heartfelt thoughts go out to his family."
The statement failed to address whether Goldstein's death will impact the show's future.
Goldstein revealed last year that as a child he was abused by his father -- leading to a six-year crack cocaine addiction.
However he claimed to be sober for more than a decade and hoped to help others beat drug addiction in Gone Too Far, which he discussed during a recent Television Critics Association press tour panel.
"Basically, it is pretty much like teen Intervention. I do an intervention for the MTV generation. A sibling reaches out to me, asks for help. Or a parent reaches out, asks for help. I show up, I offer them help," Goldstein had told reporters, according to The Associated Press.
"I'm a recovering addict, so, to me that's the one bond that we have. I can tell them what I did. I offer them 90 days in treatment. I follow up with them and help them get sober."
Due to the personal subject matter. Goldstein added watching the videos shot by Gone Too Far's addicts and their loved ones was a "terrifying" experience.
"I am a recovering drug addict. When I see it and I'm in their room and the paraphernalia and the whole lifestyle and everything, I still, 11 years later, have that little thing in my head that starts thinking, 'Oh, where's that? I wonder what that is?' And I look at it in this way, and I have to constantly remind myself why I'm here, and remember what it was like," he told reporters.
"There's no better way to remember what it was like at my bottom than to see someone at their bottom, and to help them and lift them up."
In addition to battling addiction, Goldstein was on a Learjet flight last September that burst into flames during an aborted takeoff in South Carolina.
While Goldstein and former Meet the Barkers co-star Travis Barker were the only two survivors from the crash, both suffered severe burns and were critically injured.
"I guess I get why they call it 'post trauma,' because it was very tough," Goldstein told reporters about life after the crash. "I have really bad days and I have really OK days. It's strange. I'm blessed. I'm alive. I'm here."
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