The Sixers announced Friday that Noel elected to have surgery after consulting with several specialists.
Noel missed his entire rookie season while recovering from surgery on his left knee, but this latest procedure is arthroscopic and considered minor. The Sixers have not announced a timetable for his return.
Coach Brett Brown also told reporters Friday that he was tempering statements he made earlier about hoping for a January return for No. 1 overall pick Ben Simmons. Brown said he got overly excited when he talked about Simmons' recovery from surgery on his right foot.
The Sixers said Simmons recently had sutures removed and is continuing to rehab.