De Villiers will have a plate in his hand removed after it started to cause him discomfort, in a delayed procedure announced a week ago.
Kirsten will work with the squad for five days between the second and third one-day internationals against Pakistan in Dubai and Abu Dhabi.
Mohammed Moosajee has denied that Pietersen sent derogatory text messages about members of the England team to South Africa players.
The South Africa Test captain is expected to be fully fit before the England tour in July.
The doctor of the South African team says it was necessary for the injured batsman to opt out of IPL 5.
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