--- T84.020 Dislocation of internal right hip prosthesis

--- T84.021 Dislocation of internal left hip prosthesis

--- T84.022 Instability of internal right knee prosthesis

--- T84.023 Instability of internal left knee prosthesis

--- T84.028 Dislocation of other internal joint prosthesis

--- T84.029 Dislocation of unspecified internal joint prosthesis