ModifiedUnitedHealthcarePolicy CSNCT0546.02

Motorized Spinal Traction (for North Carolina Only)

This policy governs the medical necessity and coverage stance for motorized spinal traction (vertebral axial decompression) for treatment of neck and low back disorders for UnitedHealthcare members in North Carolina.

Policy Summary

PayerUnitedHealthcare

PolicyMotorized Spinal Traction (for North Carolina Only)

Policy CodePolicy CSNCT0546.02

Change TypeClinical evidence updatedstate-specific version added

Effective DateJun 1, 2025

Next Review Date

Key ActionDo not authorize motorized spinal traction for neck or low back disorders as it is considered unproven and not medically necessary.

SourceLink

POLICY UPDATE CHANGES

Updated Clinical Evidence section to reflect the most current information; archived previous policy version CS080.O.

Created state-specific policy version for the state of North Carolina (no change to coverage guidelines).

State-specificapplies only to North Carolina

S9090example applicable HCPCS code listed

Insufficient evidencecoverage rationale

32 RCTssystematic review included

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Not Medically Necessary Criteria

Not medically necessary when ALL of the following apply:

Policy coverage stance: Motorized spinal traction devices are considered unproven and not medically necessary for treating neck and low back disorders due to insufficient evidence of efficacy.

Based on available systematic reviews and trials showing little or no impact on key outcomes and limitations in study quality and follow-up.

Covered with Criteria / Evidence Summary

Evidence summary and coverage stance (supporting trials, reviews):

Key evidence conclusions: Systematic reviews and guidelines conclude traction (manual or mechanical), including motorized non‑surgical spinal decompression, generally provides little or no benefit for pain intensity, functional status, global improvement or return to work in mixed populations with acute, subacute, or chronic low back pain (with or without sciatica). Evidence quality ranges from very low to moderate and trials are frequently small or methodologically limited.

Based primarily on Wegner et al. Cochrane review (32 RCTs, 2,762 participants) and corroborating guideline statements from ACP and NASS.

Neck pain evidence: Published clinical evidence for treating neck pain with vertebral axial decompression or motorized traction is limited to case studies; well‑designed randomized controlled trials are needed to determine efficacy for neck pain.

Guideline statements and available literature do not support traction for neck pain beyond case reports/case series.

UnitedHealthcare considers motorized spinal traction (vertebral axial decompression) not covered as medically necessary for the treatment of neck and low back disorders due to insufficient evidence of efficacy.

Systematic reviews and clinical guidelines do not support traction for non‑specific low back pain. A Cochrane-style review (Wegner et al., 2013) that pooled 32 randomized controlled trials (2,762 participants) found low- to moderate-quality evidence that traction provides little or no difference in pain intensity, functional status, global improvement, or return to work versus placebo, sham traction, no treatment, or other active interventions. Clinical practice guidelines from the American College of Physicians and the North American Spine Society conclude the evidence is insufficient to recommend traction for acute, subacute, or chronic low back pain.

Motorized spinal traction devices (including commercially marketed non‑surgical spinal decompression systems) are considered unproven and not medically necessary for treating neck and low back disorders; claims for these services may be denied on that basis given the lack of reliable evidence of clinical benefit.

Traction and device‑based non‑surgical spinal decompression are not supported as standard therapies for low back pain (with or without sciatica). High‑level evidence and guideline statements indicate the data are insufficient to recommend these device-based decompression approaches for improvement in pain, function, global outcomes, or return to work, and published evidence for neck pain is limited to case reports and series rather than well‑designed randomized trials.

Provider Actions, Authorization, and Documentation

Prior Authorization

Prior Authorization and Affected Codes

Prior authorization is required for services billed with the codes below. Motorized spinal traction (vertebral axial decompression) is designated unproven and not medically necessary for North Carolina members and claims are likely to be denied.

Affected code: S9090 — Vertebral axial decompression, per session

Note

Verify Benefits Before Authorization

Verify member benefits, plan-specific terms, and any applicable federal or state contractual requirements before approving or authorizing services. Benefit coverage may differ by contract and government mandates govern when conflicts exist.

Confirm plan benefits and eligibility prior to authorization
Check federal/state/contractual requirements that may mandate different coverage

Step Therapy

Step Therapy Not Specified

No step therapy pathway is specified for motorized spinal traction/vertebral axial decompression due to insufficient evidence of efficacy.

Rationale: insufficient high-quality evidence to support effectiveness

Documentation Required

Procedure Documentation

Provider action: submit complete clinical documentation including indication, prior conservative treatments tried, number of planned sessions, and procedural details of vertebral axial decompression (computer-driven table used, pelvic harness applied, series of cycles with gradual application and release of distraction force).

Document device and procedure details (table model/type, harness placement, cycle parameters)
Report number of sessions and clinical response

Denial Risk

Denial Risk for Motorized Spinal Traction

Claims for motorized spinal traction/vertebral axial decompression (e.g., S9090) are likely to be denied as not medically necessary given current evidence. Submit pre-authorization documentation does not guarantee coverage.

Denial risk for S9090 — vertebral axial decompression, per session

Note

Compliance with Plan-Specific Requirements

Reviewers must check plan-specific requirements and governing federal/state/contractual rules; when plan language conflicts with this policy, the federal/state/contractual requirements govern. UnitedHealthcare may use third-party tools (e.g., InterQual) to assist in benefit determinations.

Follow federal, state, or contractual requirements when they differ from this policy
Consider third-party tools (InterQual®) as applicable in benefit administration

Note

Required Benefit-Term and Tool Checks

Before authorization decisions, confirm benefit-term definitions and any required use of external tools or criteria; check for state-specific mandates (North Carolina) that affect coverage determination.

Confirm benefit-term applicability and exclusions
Verify whether third-party clinical tools should be applied

Definitions and Device Types

inv-17: Vertebral axial decompression / motorized spinal traction — definition as key/value entry

DefinitionA type of spinal traction using a computer-driven table and pelvic harness to apply cyclical distraction forces to the spine; the patient lies on a special table and is subjected to a series of cycles as the table is slowly extended and a distraction force is applied via the harness, with tension gradually decreased; number of sessions varies.

Procedure componentsComputer-driven table, pelvic harness, controlled extension/distraction cycles, variable session counts.

Intended goalTo decompress spinal structures (disc decompression) by applying controlled axial distraction forces.

inv-18: Non‑surgical spinal decompression (NSD) — device examples (DRX9000, VAX‑D, IDD) and intended mechanism

Device examplesDRX9000, VAX-D, IDD (Intervertebral Differential Dynamics) — motorized traction systems referenced in the literature and case series.

Intended mechanismMechanical distraction of the spine to reduce discogenic low back pain via motorized traction and spinal unloading techniques.

Evidence noteSystematic reviews and randomized trials of these devices report mixed results; efficacy remains unproven and RCTs show little or no difference versus sham or comparator treatments.

inv-19: Traction types included in evidence — list of traction modalities included in the evidence reviews

Included traction modalitiesMechanical traction, manual traction (unspecific or segmental), computerized traction, auto-traction, underwater traction, bed rest traction, inverted traction, continuous traction, intermittent traction.

Scope of evidenceWegner et al. Cochrane-type systematic review included RCTs using the above traction modalities (32 RCTs, 2,762 participants).

Outcomes assessedPain intensity, functional status, global improvement, and return to work were primary outcomes in the evidence reviewed.

OpenPayer

Motorized Spinal Traction (for North Carolina Only)

Coverage Criteria and Rationale

Applicable Codes

Provider Actions, Authorization, and Documentation

Background

Definitions and Device Types