The Brewers transferred Miley (elbow) to the 60-day injured list Tuesday.
Miley (elbow) is scheduled to undergo Tommy John surgery May 7 in Cincinnati, Todd Rosiak of the Milwaukee Journal Sentinel reports.
Miley was diagnosed with a torn UCL in his left elbow Friday and will undergo Tommy John surgery, Adam McCalvy of MLB.com reports.
The Brewers placed Miley on the 15-day injured list Monday, retroactive to April 19, with left elbow inflammation.
Miley said Friday that he expects to make his next scheduled start despite taking a comebacker off his left knee during his outing Tuesday, Adam McCalvy of MLB.com reports.
MIley did not factor into the decision in Wednesday's win over the Reds, allowing one run on one hit and two walks over four innings.
The Brewers reinstated Miley (shoulder) from the 15-day injured list ahead of his scheduled start Wednesday against the Reds in Cincinnati.
Miley (shoulder) covered three innings in his rehab start Friday for Triple-A Nashville, striking out three while allowing one earned run on two hits and two walks.
Miley (shoulder) is scheduled to make a rehab start for Triple-A Nashville on Friday, MLB.com reports.
Miley (shoulder) is next expected to make a minor-league rehab start after throwing a two-inning simulated game Monday, Adam McCalvy of MLB.com reports.