That means she'll be unable to record any new music until she's given the all clear.
Part of Cyrus' recovery will include resting "her voice for several weeks while her vocal cords heal", the source adds. Mind you, Miley had already noted she was on "vocal rest" following her tonsillitis procedure from last month.
"Cody is by her side. Cody will make sure she isn't bored while she recovers".
Cyrus has been working on a new album and was planning to tour next year. E!
Boyfriend Cody Simpson seemed to allude to the surgery on social-media after posting a black-and-white image of the pair alongside the word "success". Our sources say Miley is expected to get back to singing early next year.
Almost three weeks ago, Cyrus shared that she had taken a break from singing.
"Miley's hand down the front of Cody's trousers is all about shock value to the world and a secret message between the two of them", she said, referring to a recent Instagram photo showing the shirtless "iYiYi" singer posing while Miley's hand was touching his crotch. The singer was reportedly hospitalized for one day for her tonsillitis surgery last month.
Although Cyrus and Simpson's relationship may be new, the pair were friends for years before romance bloomed.