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Pediatric Gait Trainers and Standing Systems (for Tennessee Only)
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Clinical coverage criteria and evidence summary for pediatric gait trainers and supported standing systems applied to Tennessee Medicaid (TennCare) and CoverKids members. Governs medical necessity determination and coding for pediatric gait trainers and standing systems.
Updated Coverage Rationale Standing Systems State-Specific Criteria to refer to TennCare Medicaid definitions for medical necessity for power standing systems.
Replaced prior instruction about CoverKids exclusions with a directive to refer to TennCare CoverKids exclusions for coverage criteria for floor standers.
Updated References section to reflect the most current information and archived previous policy version CS159TN.L.
Coverage Criteria for Pediatric Gait Trainers and Standing Systems
inv-01: Gait trainers — Functional Ambulation
Covered when ALL of the following are met
From policy coverage rationale
inv-02: Gait trainers — Therapeutic ambulation
Covered when ALL of the following are met
From policy coverage rationale
inv-03: Standing systems — Medical necessity
Stationary, mobile, and active standing systems are proven and medically necessary when ALL of the following are met
From policy non-state-specific criteria
inv-04: TennCare/CoverKids state-specific criteria
State-specific referral to TennCare rules
inv-05: Covered indications for standing systems
Covered when ALL of the following are met per policy and referenced TennCare definitions
Supported by Paleg et al. systematic review and RESNA position statement
Evidence ranges from systematic reviews to smaller studies
Providers must follow state criteria for TennCare beneficiaries
For CoverKids members, coverage of floor standers is governed by Tennessee Division of TennCare rules. Refer to TennCare CoverKids § 1200-13-21-.06 for exclusions and coverage criteria that apply to floor standers under the CoverKids program.
Providers should consult TennCare CoverKids § 1200-13-21-.06 for the specific exclusions and coverage limitations that apply to floor standers. State rules define which floor standers and related items are excluded or limited for CoverKids; follow the cited TennCare regulation for operative details.
Requests for devices will not be supported when the documented treatment goals can be achieved with the individual’s current medical device/equipment or alternate medical treatment. Providers should document trials of less intensive or alternative assistive devices and therapies when the policy requires inability to achieve goals with current devices prior to approval.
Evidence supporting pediatric supported standing programs and gait trainer use has limitations. Systematic reviews note a paucity of pediatric dosing literature and a relative lack of higher-level studies, and authors call for additional well-designed research to better define dosing, outcomes, and clinical reasoning for these interventions.
HCPCS Codes, FDA Classifications, and Usage Dosing
| E0637 | Combination sit-to-stand frame/table system, any size including pediatric, with seat lift feature, with or without wheels. |
| E0638 | Standing frame/table system, one position (e.g., upright, supine or prone stander), any size including pediatric, with or without wheels. |
| E0641 | Standing frame/table system, multi-position (e.g., 3-way stander), any size including pediatric, with or without wheels. |
| E0642 | Standing frame/table system, mobile (dynamic stander), any size including pediatric. |
| E8000 | Gait trainer, pediatric size, posterior support, includes all accessories and components. |
| E8001 | Gait trainer, pediatric size, upright support, includes all accessories and components. |
| E8002 | Gait trainer, pediatric size, anterior support, includes all accessories and components. |
| Class I | Gait trainers and many standing system product categories are FDA Class I and exempt from 510(k) |
Provider Actions and Authorization Requirements
Prior authorization required for listed HCPCS codes (TennCare/CoverKids)
Prior authorization is required for HCPCS codes E0637, E0638, E0641, E0642, E8000, E8001, and E8002. Requests must include documentation that meets TennCare/CoverKids clinical criteria (age, functional potential or tolerance, physician-directed treatment plan, and PT trial) to establish medical necessity.
Verify benefit plan and prior authorization requirements
Verify the member’s federal, state, or contractual benefit plan requirements before applying this policy; the terms of the federal, state, or contractual benefit plan govern in the event of a conflict and may affect coverage or prior authorization requirements.
- Check federal, state, or contractual benefit plan requirements before using this policy
- UnitedHealthcare may use third-party tools (e.g., InterQual) to assist administration
Document prior trials of less intensive/alternative devices and therapies
Document trials of less intensive or alternative assistive devices or therapies when the policy requires inability to achieve goals with current devices; prior trials must be included with the request to support approval.
- Provide documentation that current medical device/equipment or alternate treatment was ineffective or insufficient
- Include PT trial results demonstrating compliance, tolerance, and potential benefit
Submit physician plan of care and PT trial documentation with prior authorization
Include the specific, action-oriented documentation described in the policy: submit the physician-directed written treatment plan and PT evaluation with trial demonstrating compliance, tolerance, and potential benefit when requesting standing systems or gait trainers.
- Physician-directed written treatment plan specifying frequency and duration
- Physical therapy evaluation and trial of the device showing compliance and tolerance
- Attach supporting clinical evaluations and trial notes with the prior authorization request
Required documentation to establish medical necessity
Required documentation must include a physician-directed written treatment plan (frequency and duration) and documentation of prior assistive device trials and a physical therapy evaluation with trial showing compliance, tolerance, and potential benefit.
- Physician-directed written treatment plan including frequency and duration
- Documentation of prior assistive device/therapy trials if applicable
- PT evaluation with trial demonstrating compliance, tolerance, and potential clinical benefit
Reference TennCare Medicaid and CoverKids rules for documentation
Reference TennCare resources for definitions and exclusions when preparing documentation: TennCare Medicaid § 1200-13-13-.01 for medical necessity definitions and TennCare CoverKids § 1200-13-21-.06 for CoverKids exclusions and coverage criteria for floor standers.
- TennCare Medicaid § 1200-13-13-.01 (definitions for medical necessity for power standing systems)
- TennCare CoverKids § 1200-13-21-.06 (CoverKids exclusions and coverage criteria for floor standers)
Potential denial triggers — missing required age, trials, or clinical documentation
Requests may be denied if they do not document the individual is ≤18 years old; lack demonstrated potential for functional ambulation or tolerance; fail to document prior device/therapy trials when required; or lack the required physician-directed plan of care and PT trial documentation.
- Missing documentation of age ≤18 years
- Absent documentation of potential for Functional Ambulation or device tolerance
- No evidence of prior assistive device/therapy trials when policy requires
- Missing physician-directed treatment plan or PT trial documentation
Adhere to Tennessee TennCare and CoverKids state-specific criteria
Follow Tennessee-specific criteria: coverage decisions for TennCare beneficiaries must align with TennCare § 1200-13-13-.01 and TennCare CoverKids § 1200-13-21-.06; failure to follow these state definitions and exclusions may result in denial.
- Medical necessity and coverage must align with TennCare § 1200-13-13-.01 and CoverKids § 1200-13-21-.06
- State-specific definitions and CoverKids exclusions govern coverage for power standing systems and floor standers
Medical Necessity Criteria
inv-24: DME medical necessity
Equipment is medically necessary when the policy's clinical criteria are met
Combined from gait trainer and standing system criteria
inv-25: DME medical necessity criteria for standing systems
Medical necessity for standing systems is supported when used as part of a comprehensive program for children who are non-ambulatory or minimally ambulatory
Derived from Paleg et al. review
Supported by systematic reviews and RESNA position statement
RESNA/CTF position statement and policy state-specific instructions
Rental, Purchase, and Coverage Rule References
| Item | Policy detail |
|---|---|
| Equipment covered | |
| Policy references state rules for coverage and does not specify rental versus purchase in this section; providers must follow Tennessee Department of Finance and Administration, Bureau of TennCare § 1200-13-13-.01 and TennCare CoverKids § 1200-13-21-.06 as applicable. | |
| Equipment classifications | |
| Gait trainers and many standing system product categories are FDA Class I devices and are exempt from 510(k) marketing requirements; standing systems may be classified in product categories ION, INW, and IPL (see FDA resources). |
Replacement Rules and Lifecycle
Required Documentation for Prior Authorization
Attach physician plan of care and PT trial with PA for listed HCPCS
Include the physician plan of care and the physical therapy evaluation with trial evidence when submitting prior authorization for HCPCS E0637–E0642 and E8000–E8002; documentation must demonstrate compliance, tolerance, and potential clinical benefit.
Reference TennCare definitions and CoverKids exclusions in documentation
Ensure documentation cites TennCare medical necessity definitions and any applicable CoverKids exclusions; check state rules and benefit edits that may apply to the request.
Not Covered Items and Exclusions
Devices are not covered when documentation shows the individual can accomplish the treatment goals with their existing medical device/equipment or with alternate medical treatment. Such requests do not meet the policy’s medical necessity criteria and may be denied.
Specific exclusions for floor standers and related items are determined by TennCare CoverKids regulations. See TennCare CoverKids § 1200-13-21-.06 for the state-defined exclusions and coverage limitations that apply to floor standers.
Background and Evidence Summary
Gait trainers provide trunk and pelvic support and partially or fully unweight the user to assist with ambulation. They are intended to support children who are non‑ambulatory or have limited ambulation by stabilizing posture and enabling practice of stepping and gait-related motor patterns under clinical supervision.
Key Definitions
Policy Changes and Revision History
Coverage Rationale Standing Systems: updated TennCare state‑specific instructions to refer to Tennessee Dept. of Finance and Administration, Bureau of TennCare § 1200-13-13-.01 for medical necessity definitions for power standing systems; revised CoverKids instruction to reference TennCare § 1200-13-21-.06 for coverage criteria for floor standers; updated References and archived prior version CS159TN.L.
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