The Canadian singer said she was recovering from "severe and persistent muscle spasms" that hampered her ability to perform, according to a post published from her verified Instagram account on Saturday.
Dion postponed her stay in Las Vegas in October 2021 as a result of the spasms and said at the time that she was "crushed".
The remaining shows of her Courage World Tour had been rearranged to take place from March 9 to April 12 this year. However, they have since been canceled while her medical team assesses and treats her condition.
"I was really hoping I would be good to go now, but I suppose I just need to be more patient and follow the cure that my doctors prescribe," Dion said in the Instagram post.
"There's a lot of organization and preparation going into our shows, and so we have to make decisions today that will affect the plans two months later.
"I will be so happy to be back in full health, as well as that we all get past this pandemic, and I can not wait to be back on stage again," she added.
Dion is best known for her recording of the ballad "Titanic" theme song, "My Heart Will Go On", for which she won two Grammys in 1998.
In the following years, she became one of the best-selling artists of all time, with record sales of over 200 million globally, according to Sony Music.
In canceling the North American part of the trip, Dion added: "Meanwhile, I have been very touched by all the encouraging words that everyone has sent to me on social media. I feel your love and support and it means the world for me."