Powered lower-limb exoskeletons for ambulation
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This policy governs coverage and medical necessity determinations for powered lower-limb exoskeleton devices used for ambulation in members of Blue Cross Blue Shield - Rhode Island, addressing Medicare Advantage and Commercial products.
No material clinical or coverage changes in this revision.
Coverage criteria — powered lower-limb exoskeletons
Coverage determination statements
Covered when ALL of the following statements reflect the policy's overall determination:
Evidence limited to small institutional studies and insufficient outpatient effectiveness data; safety outside supervised settings needs further study.
The ReWalk™ powered exoskeleton is intended to enable ambulatory function in individuals with spinal cord injury when used under a supervised, certified training program. Per the FDA de novo classification summary, ReWalk™ is indicated for individuals with spinal cord injuries at levels T7 to L5 to ambulate with supervision of a specially trained companion, and for levels T4 to T6 for use in rehabilitation institutions under the user assessment and training certification program. The device is not intended for sports or stair climbing.
For Commercial products, use of a powered lower-limb exoskeleton for ambulation is considered not medically necessary. The policy states that current evidence is insufficient to determine the effects of powered exoskeleton technology on health outcomes; available studies are small, largely institutional, and provide limited evaluation of real-world outpatient effectiveness and safety.
Medical necessity — candidate characteristics and indications
Coding — HCPCS and historical codes
| K1007 | Bilateral hip, knee, ankle, foot device, powered, includes pelvic component, single or double upright(s), knee joints any type, with or without ankle joints any type, includes all components and accessories, motors, microprocessors, sensors |
| E1399 | Durable Medical Equipment, Miscellaneous (used prior to 10/01/2020 for powered exoskeleton device) |
Coding, filing, and benefit verification requirements
File all claims for powered lower-limb exoskeletons with HCPCS code K1007 for dates of service on or after 10/01/2020; for dates of service prior to 10/01/2020 submit claims using unlisted DME code E1399. Verify the member's Benefit Booklet, Evidence of Coverage, or Subscriber Agreement to determine member-specific benefits and any contract exceptions.
- On/after 10/01/2020 use HCPCS K1007: "Bilateral hip, knee, ankle, foot device, powered... includes all components and accessories, motors, microprocessors, sensors."
- Prior to 10/01/2020 use unlisted DME code E1399: "Durable Medical Equipment, Miscellaneous."
- Check the appropriate Benefit Booklet/Evidence of Coverage/Subscriber Agreement for group- or contract-specific coverage limitations.
Provider actions — authorization, billing, and denial triggers
Prior authorization
Prior authorization is not required for powered exoskeletons under this policy.
Render as provided.
Coverage denial triggers
Claims for powered exoskeletons are not covered for Medicare Advantage members and are considered not medically necessary for Commercial members; submitting claims may result in denial or a determination of not medically necessary.
- Medicare Advantage: Use for ambulation is not covered.
- Commercial: Use for ambulation is considered not medically necessary.
- Claims on/after 10/01/2020 must use HCPCS K1007 and may still be denied based on coverage stance.
Rental and purchase rules
| HCPCS | Description | Coverage status |
|---|---|---|
| K1007 | ||
| Bilateral hip, knee, ankle, foot device, powered, includes pelvic component, single or double upright(s), knee joints any type, with or without ankle joints any type, includes all components and accessories, motors, microprocessors, sensors | ||
| Not covered for Medicare Advantage; Not medically necessary for Commercial products | ||
| E1399 | ||
| Durable Medical Equipment, Miscellaneous (used for powered exoskeletons prior to 10/01/2020) | ||
| Neutral (used for filing prior to availability of specific HCPCS) |
Definitions
Replacement policy
Documentation and claims filing
File claims with specified HCPCS and verify benefits
File claims using the policy-specified HCPCS code and confirm member coverage details in the Benefit Booklet or Evidence of Coverage before billing.
Background
Powered exoskeletons are external, wearable, motorized frameworks—sometimes described as powered orthoses or wearable robots—designed to provide powered movement to paralyzed or weakened lower limbs to enable standing and ambulation. Devices (for example, ReWalk™, Indego®, Ekso) incorporate motors, microprocessors and sensors and typically require user-initiated control and the use of forearm crutches or a walker. Regulatory summaries and the evidence base note these devices have been evaluated primarily in supervised institutional or rehabilitation settings; training and candidate screening (eg, adequate upper‑extremity strength, bone health, and weight/height limits) are integral to their intended use.
Not covered — payer-specific stance
Coverage stance is explicit: use of a powered exoskeleton for ambulation is not covered for Medicare Advantage members and is considered not medically necessary for Commercial members due to insufficient evidence. Providers should note that coding rules require filing claims with HCPCS K1007 for dates of service on or after 10/01/2020 (and previously with E1399), and that benefits may vary by contract; Medicare Advantage claims for these devices are denied.
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