TL;DR: Aetna, a CVS Health company, modified CPB 0505 covering ambulatory assist devices — walkers, canes, and crutches — effective January 5, 2026. Here's what billing teams need to know before submitting claims against HCPCS codes E0100 through E0159 and related accessories.
This ambulatory assist devices coverage policy update touches 38 HCPCS codes and 69 ICD-10 diagnosis codes. The CPB 0505 Aetna system now draws a hard line between covered DME and several non-covered device types — including articulating spring-assisted crutches and battery-powered walkers. If your team handles DME billing for orthopedic, neurology, or pediatric patients, this policy affects your reimbursement on routine equipment orders.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | Aetna, a CVS Health company |
| Policy | Ambulatory Assist Devices: Walkers, Canes, and Crutches |
| Policy Code | CPB 0505 |
| Change Type | Modified |
| Effective Date | January 5, 2026 |
| Impact Level | Medium |
| Specialties Affected | Orthopedics, Neurology, Physical Medicine & Rehabilitation, Pediatrics, DME Suppliers |
| Key Action | Audit charge capture for E0117, E0144, E0152, and E0156 — Aetna will not cover these devices under any circumstance |
Aetna Ambulatory Assist Device Coverage Criteria and Medical Necessity Requirements 2026
The Aetna ambulatory assist devices coverage policy uses a three-part medical necessity test. All three criteria must be met — not just one or two. A single missing element is enough for a claim denial.
For canes (E0100, E0105) and crutches (E0110–E0116, E0118):
First, the member must have a mobility limitation that significantly impairs their ability to perform one or more mobility-related activities of daily living (MRADLs) at home. Aetna defines MRADLs as toileting, feeding, dressing, grooming, and bathing — performed in customary home locations. The limitation must either prevent the MRADL entirely, place the member at heightened risk of morbidity or mortality attempting it, or prevent completion within a reasonable time frame.
Second, the member must be able to safely use the cane or crutch. This is a functional safety test, not just a diagnosis-driven one.
Third, the cane or crutch must sufficiently resolve the functional mobility deficit on its own. If a more complex device is needed, the standard equipment won't qualify.
For standard walkers (E0130, E0135, E0140, E0141, E0143, E0147, E0148, E0149, E0150):
The same three-part test applies. Aetna explicitly allows walkers with two, three, or four wheels — fixed or swivel — and permits glide-type brakes. A glide-type brake uses a spring mechanism that raises the leg post off the ground when the member isn't pushing down on the frame. That distinction matters when you're coding wheel and brake attachments like E0155 and E0159.
Pediatric equipment:
Aetna covers pediatric crawlers as DME for disabled children. The Mulholland Walkabout — a four-wheeled walker with an attached back brace — is covered for children with impaired ambulation who lack trunk stability and balance. Pediatric gait trainers bill under E8000, E8001, and E8002, each designating posterior, upright, or anterior support configurations.
Standard strollers are not covered DME. Specially adapted strollers can qualify as medically necessary DME when used in place of a wheelchair for children. Get your medical director to document that substitution explicitly in the chart.
Prior authorization requirements vary by plan. Confirm prior auth requirements with the specific Aetna plan before submitting claims for higher-cost walker categories like E0147, E0149, or any pediatric gait trainer code. Don't assume the medical necessity criteria alone are sufficient to clear the claim.
Aetna Ambulatory Assist Device Exclusions and Non-Covered Indications
Four HCPCS codes are explicitly non-covered under this coverage policy. Billing these codes to Aetna will not result in reimbursement.
E0117 — Articulating, spring-assisted underarm crutch: Aetna follows Medicare policy here and denies coverage. The clinical value of articulated crutches — those with two legs connected by a bar that propels the member forward — has not been established. This is a blanket exclusion, not a medical necessity determination. Document it in your DME order tracking system as a hard stop.
E0144 — Enclosed, four-sided framed wheeled walker with posterior seat: Aetna groups this with the non-covered codes alongside sit-and-stand walking assistants and the Upsee mobility device. The enclosed posterior-seat design does not qualify as a standard walker under this policy.
E0152 — Battery-powered wheeled walker (Sully Walker): Non-covered. Aetna has not established clinical value for powered ambulatory assist devices under this policy. This is a separate determination from power wheelchairs and mobility scooters, which live under a different CPB.
E0156 — Seat attachment for walker: Also grouped with non-covered items. This one surprises billing teams because seat attachments feel like routine accessories. Under CPB 0505, Aetna treats E0156 as tied to non-covered device categories.
The sit-and-stand walking assistant crutch type — distinct from E0117 — is also non-covered. So is the Upsee mobility device. Neither has established clinical value under Aetna's review.
Coverage Indications at a Glance
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| Canes and quad canes for MRADL impairment | Covered | E0100, E0105 | Three-part medical necessity test required |
| Standard crutches (forearm and underarm) | Covered | E0110, E0111, E0112, E0113, E0114, E0116 | Safety and sufficiency criteria apply |
| Crutch substitute, lower leg platform (iWalkFree) | Covered | E0118 | Selection criteria apply |
| Standard walkers (rigid, folding, wheeled) | Covered | E0130, E0135, E0141, E0143 | Wheels, swivel, height adjustability all permitted |
| Walker with trunk support | Covered | E0140 | For members needing trunk stabilization |
| Heavy duty walkers | Covered | E0147, E0148, E0149 | Multiple braking and variable resistance variants |
| Combination wheeled walker with seat and transport chair | Covered | E0150 | Must meet standard walker criteria |
| Walker and crutch accessories | Covered | A4635, A4636, A4637, E0153, E0154, E0155, E0157, E0158, E0159 | Accessories covered when base equipment qualifies |
| Pediatric crawlers | Covered | — | Covered as DME for disabled children |
| Mulholland Walkabout | Covered | E0140 | For children lacking trunk stability and balance |
| Pediatric gait trainers | Covered | E8000, E8001, E8002 | Posterior, upright, and anterior support variants |
| Rollabout chair (Rolleraid, 5"+ castors) | Covered | E1031 | Selection criteria apply |
| Standing frame systems | Covered | E0638, E0641, E0642 | One-position, multi-position, and mobile stander types |
| Specially adapted strollers | Covered | — | Only when used in place of a wheelchair for children |
| Standard strollers | Not Covered | — | Not primarily medical in nature |
| Articulating spring-assisted crutch | Not Covered | E0117 | Consistent with Medicare policy; no established clinical value |
| Enclosed four-sided wheeled walker with posterior seat | Not Covered | E0144 | Grouped with non-covered mobility devices |
| Battery-powered wheeled walker (Sully Walker) | Not Covered | E0152 | No established clinical value |
| Seat attachment for walker | Not Covered | E0156 | Tied to non-covered device categories |
| Sit-and-stand walking assistant crutch | Not Covered | — | No established clinical value |
| Upsee mobility device | Not Covered | — | No established clinical value |
Aetna Ambulatory Assist Device Billing Guidelines and Action Items 2026
| # | Action Item |
|---|---|
| 1 | Remove E0117, E0144, E0152, and E0156 from your Aetna charge capture templates before January 5, 2026. These codes are hard exclusions. Submitting them wastes time on appeals you won't win. Route any patient orders for these devices to a coverage exception or alternative device review. |
| 2 | Verify your MRADL documentation is explicit in the clinical record. "Patient has trouble walking" is not enough. The chart must tie the mobility limitation to a specific MRADL — toileting, feeding, dressing, grooming, or bathing — performed at home. Auditors look for this connection. If it's not there, the claim is vulnerable. |
| 3 | Flag pediatric walker and gait trainer orders for documentation review. Orders for E8000, E8001, E8002, and the Mulholland Walkabout require documentation of impaired ambulation and, where applicable, lack of trunk stability. Don't let pediatric DME orders move through without that specificity in the chart. |
| 4 | Check prior authorization requirements on a plan-by-plan basis for higher-cost codes. E0147, E0149, and pediatric gait trainers (E8000–E8002) are the most likely targets for prior auth requirements. Call the plan before submitting — a surprise denial on a gait trainer is expensive to appeal and slow to overturn. |
| 5 | Code spring-damping canes and crutches with standard codes. Aetna explicitly states that canes or crutches with springs that reduce impact and vibration should bill under existing cane and crutch codes — E0100, E0105, E0110, etc. Don't create a separate line item or use unlisted codes for the spring feature. That's a clean route to a claim denial. |
| 6 | Audit standing frame claims (E0638, E0641, E0642) against patient eligibility. These codes are covered but flagged under the selection criteria group. Make sure your documentation supports the specific frame type billed — one-position versus multi-position versus mobile — and that the diagnosis codes are present in the record. |
| 7 | If your DME mix includes a high volume of complex pediatric equipment or enclosed walkers, talk to your compliance officer before the effective date of January 5, 2026. The non-covered designations for E0144 and E0152 may affect current patient populations who are already using these devices. You need a plan for those renewals. |
| Previous Version | Current Version |
|---|---|
| Coverage is considered experimental and investigational for all indications | Coverage is considered medically necessary when specific criteria are met |
| Prior authorization is not required | Prior authorization is required for initial treatment |
| Documentation must include clinical history | Documentation must include clinical history |
| Re-review every 24 months | Re-review every 12 months with updated clinical documentation |
CPT, HCPCS, and ICD-10 Codes for Ambulatory Assist Devices Under CPB 0505
Covered HCPCS Codes (When Selection Criteria Are Met)
| Code | Type | Description |
|---|---|---|
| A4635 | HCPCS | Underarm pad, crutch, replacement, each |
| A4636 | HCPCS | Replacement, handgrip, cane, crutch, or walker, each |
| A4637 | HCPCS | Replacement, tip, cane, crutch, or walker, each |
| E0100 | HCPCS | Cane, includes canes of all materials, adjustable or fixed, with tip |
| E0105 | HCPCS | Cane, quad or three-prong, includes canes of all materials, adjustable or fixed, with tips |
| E0110 | HCPCS | Crutches, forearm, includes crutches of various materials, adjustable or fixed, pair, complete |
| E0111 | HCPCS | Crutch, forearm, includes crutches of various materials, adjustable or fixed, each, with tip and handgrip |
| E0112 | HCPCS | Crutches, underarm, wood, adjustable or fixed, pair, with pads, tips and handgrips |
| E0113 | HCPCS | Crutch, underarm, wood, adjustable or fixed, each, with pad, tip and handgrip |
| E0114 | HCPCS | Crutches, underarm, other than wood, adjustable or fixed, pair, with pads, tips and handgrips |
| E0116 | HCPCS | Crutch, underarm, other than wood, adjustable or fixed, with pad, tip, handgrip, with or without shock absorber |
| E0118 | HCPCS | Crutch substitute, lower leg platform, with or without wheels, each (iWalkFree) |
| E0130 | HCPCS | Walker, rigid (pick-up), adjustable or fixed height |
| E0135 | HCPCS | Walker, folding (pickup), adjustable or fixed height |
| E0140 | HCPCS | Walker, with trunk support, adjustable or fixed height, any type |
| E0141 | HCPCS | Walker, rigid, wheeled, adjustable or fixed height |
| E0143 | HCPCS | Walker, folding, wheeled, adjustable or fixed height |
| E0147 | HCPCS | Walker, heavy duty, multiple braking system, variable wheel resistance |
| E0148 | HCPCS | Walker, heavy duty, without wheels, rigid or folding, any type, each |
| E0149 | HCPCS | Walker, heavy duty, wheeled, rigid or folding, any type |
| E0150 | HCPCS | Combination wheeled walker with seat and transport chair, folding, adjustable or fixed height |
| E0153 | HCPCS | Platform attachment, forearm crutch, each |
| E0154 | HCPCS | Platform attachment, walker, each |
| E0155 | HCPCS | Wheel attachment, rigid pick-up walker, per pair |
| E0157 | HCPCS | Crutch attachment, walker, each |
| E0158 | HCPCS | Leg extensions for walker, per set of four (4) |
| E0159 | HCPCS | Brake attachment for wheeled walker, replacement, each |
| E0638 | HCPCS | Standing frame system, one position (e.g., upright, supine or prone stander), any size including pediatric |
| E0641 | HCPCS | Standing frame system, multi-position (e.g., three way stander), any size including pediatric |
| E0642 | HCPCS | Standing frame system, mobile (dynamic stander), any size including pediatric |
| E1031 | HCPCS | Rollabout chair, any and all types with castors 5" or greater (Rolleraid) |
| E8000 | HCPCS | Gait trainer, pediatric size, posterior support, includes all accessories and components |
| E8001 | HCPCS | Gait trainer, pediatric size, upright support, includes all accessories and components |
| E8002 | HCPCS | Gait trainer, pediatric size, anterior support, includes all accessories and components |
Not Covered / Non-Covered Codes
| Code | Type | Description | Reason |
|---|---|---|---|
| E0117 | HCPCS | Crutch, underarm, articulating, spring assisted, each | Clinical value not established; consistent with Medicare policy |
| E0144 | HCPCS | Walker, enclosed, four sided framed, rigid or folding, wheeled with posterior seat | Grouped with sit-and-stand and Upsee non-covered devices |
| E0152 | HCPCS | Walker, battery powered, wheeled, folding, adjustable or fixed height (Sully Walker) | Clinical value not established |
| E0156 | HCPCS | Seat attachment, walker | Tied to non-covered device categories under CPB 0505 |
Key ICD-10-CM Diagnosis Codes
| Code | Description |
|---|---|
| G11.0–G11.9 | Hereditary ataxia (multiple subtypes) |
| G12.0–G12.9 | Spinal muscular atrophy and related syndromes |
| G13.0–G13.8 | Systemic atrophies primarily affecting the central nervous system in diseases classified elsewhere |
| G14 | Postpolio syndrome |
| G24.1 | Genetic torsion dystonia |
| G31.9 | Degenerative disease of nervous system, unspecified |
| G71.0–G71.9 | Muscular dystrophy (multiple subtypes) |
These diagnosis codes tie directly to the neurological and musculoskeletal conditions Aetna expects to see when DME orders for ambulatory assist devices are medically justified. If you're billing E0130–E0150 for a patient with G12.2 (spinal muscular atrophy) or G71.0 (muscular dystrophy), the ICD-10 linkage is straightforward. Make sure your orders include the specific subtype code — not just the category — so the medical necessity connection is explicit on the face of the claim.
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