The former child star - who was best known for her roles in Lilo and Stitch and The Ring - passed away after meningitis and an infection in her blood caused sepsis.
Chase's boyfriend, Roy Hernandez, confirmed the news to TMZ, after previously launching a GoFundMe page and sharing details of her health troubles online.
Hernandez shared at the time: "Daveigh Chase, my girlfriend, has always been a light in my life. Many people know her as a talented childhood actor from Lilo and Stitch, Spirited Away and Donnie Darko, but behind the scenes, she's faced more than her share of hardship.
"After a difficult childhood and a painful falling out with her family, Daveigh was bullied and struggled to find safety and happiness in downtown L.A. When we met, I promised to protect her and give her the love and comfort she deserved. Together, we found moments of happiness and hope."
Hernandez explained Chase was recently diagnosed with meningitis and that she had "several serious blood infections".
On the GoFundMe page, he shared: "Her condition has become critical, and the doctors have told me she may not have much time left. All she ever wanted was a place where we could live together, feel safe and be happy. Now, more than ever, I want to give her that sense of home and peace in her final days."
Hernandez urged fans to help via the GoFundMe if they possibly could.
Chase last appeared on screen in the thriller film American Romance in 2016. However, she admitted in a 2009 interview that she wanted to leave an impression in the movie business.
The actress told Interview magazine at the time: "I just want to make something that I love and people will respect. I want to do things that will change someone's life, not something they'll forget about tomorrow."
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