American Idol Champ Phillip Phillips To Have Urgent Surgery

TMZ broke the story ... Phillips doctors ordered him to undergo a procedure to fix his severe kidney stone problems -- which have worsened since the singer went on "Idol" -- but Phillip refused, insisting on finishing the show first.

But now that it's all over ... and Phillip won ... we're told he's finally planning on getting the operation in L.A. in the next 7-10 days.

We're told Phillip's parents will be flying in for support.