To support a more detailed description of differences in patterns of amputation between beneficiaries with and without ESRD, we classified patients intosevenmutually exclusive groups according to their highest level of amputation and whether they underwent more than one lower extremity amputation during the last year of life as follows: no amputation; single amputation at the level of the toe, below knee (including ankle), or above knee, respectively; or more than one amputation procedure with thehighestlevelbeingtoe,below knee (including ankle),or above knee, respectively