--- T84.060 Wear of articular bearing surface of internal prosthetic right hip joint

--- T84.061 Wear of articular bearing surface of internal prosthetic left hip joint

--- T84.062 Wear of articular bearing surface of internal prosthetic right knee joint

--- T84.063 Wear of articular bearing surface of internal prosthetic left knee joint

--- T84.068 Wear of articular bearing surface of other internal prosthetic joint

--- T84.069 Wear of articular bearing surface of unspecified internal prosthetic joint