K-Levels: K-levels are defined by Medicare based on an individual's ability or potential to ambulate and navigate their environment. Once it is determined in which K-level an individual resides, it can be determined which prosthetic components are covered by Medicare.
|K-Level||Description||Foot/Ankle Assemblies||Knee Units|
|K0||This patient does not have the ability or potential to ambulate or transfer safely with or without assistance and a prosthesis does not enhance their quality of life or mobility.||Not eligible for prosthesis||Not eligible for prosthesis|
|K1||This patient has the ability or potential to use a prosthesis for transfers or ambulation on level surfaces at fixed cadence - a typical limited or unlimited household ambulator.||External keel, SACH feet or single axis ankle/feet||Single-axis, constant friction knee|
|K2||This patient has the ability or potential for ambulation with the ability to traverse low-level environmental barriers such as curbs, stairs, or uneven surfaces - a typical community ambulator.||Flexible-keel feet and multi-axial ankle/feet||Single-axis, constant friction knee|
|K3||The patient has the ability or potential for ambulation with variable cadence - a typical community ambulator with the ability to traverse most environmental barriers and may have vocational, herapeutic, or exercise activity that demands prosthetic use beyond simple locomotion.||Flex foot and flex-walk systems, energy storing feet, multi-axial ankle/feet, or dynamic response feet||Fluid and pneumatic control knees|
|K4||The patient has the ability or potential for prosthetic ambulation that exceeds basic ambulation skills, exhibiting high impact, stress, or energy levels - typical of the prosthetic demands of the child, active adult, or athlete.||Any ankle foot system appropriate||Any ankle knee system appropriate|