CurrentUnitedHealthcarePolicy CS080KY.06

Motorized Spinal Traction (for Kentucky Only)

UnitedHealthcare Community Plan medical policy for the state of Kentucky addressing coverage of motorized spinal traction (vertebral axial decompression) for neck and low back disorders, summarizing clinical evidence, coding guidance, and applicability.

Policy Summary

PayerUnitedHealthcare

PolicyMotorized Spinal Traction (for Kentucky Only)

Policy CodePolicy CS080KY.06

Change TypeRevised (clinical evidence update)

Effective DateJun 1, 2025

Next Review Date

Key ActionPolicy applies only to Kentucky; providers must reference state-specific requirements and member benefit plans when determining coverage.

POLICY UPDATE CHANGES

Updated Clinical Evidence section to reflect the most current information and archived previous policy version CS080KY.05.

1Referenced Procedure Codes

Kentucky-onlyGeographic Scope

Not medically necessaryCoverage Stance

Coverage Summary

Policy Number CS080KY.06. This UnitedHealthcare Community Plan medical policy (Kentucky-only) addresses coverage of motorized spinal traction / vertebral axial decompression for neck and low back disorders and is effective 2025-06-01.

Medical Necessity / Coverage Rationale

Coverage Rationale / Medically Necessary Determination

Policy statement:

ALL of the following

This Medical Policy only applies to the state of Kentucky.
Motorized spinal traction devices are unproven and not medically necessary for treating neck and low back disorders due to insufficient evidence of efficacy.

Not Covered / Experimental

Overall evidence conclusion: the available literature is insufficient to demonstrate that motorized spinal traction devices improve health outcomes for neck or low back disorders; devices are therefore considered unproven and not medically necessary.

Notable systematic reviews include the Cochrane update by Wegner et al. (2013), which found low- to moderate-quality evidence that traction makes little or no difference in pain, function, global improvement, or return to work; more recent reviews (e.g., Vanti et al. 2023) and other RCTs report inconsistent, low-quality, or short-term benefits. These evidence limitations support the policy's not-covered determination.

Provider Actions & Administrative Requirements

Documentation Required

State applicability

This policy applies only to Kentucky. Providers must reference state-specific requirements and the member's benefit plan when determining coverage applicability.

Prior Authorization

Prior authorization and benefit determination

Coverage determinations must follow the member-specific benefit plan document and applicable federal and state laws. UnitedHealthcare may modify policies and may use InterQual criteria when applicable.

Billing Rule

Coding reference

HCPCS code S9090 (vertebral axial decompression, per session) is provided for reference. Listing a code in this policy does not imply that the service is covered or guarantee payment.

S9090

Background

Vertebral axial decompression is a form of spinal traction that uses a computer-driven table and a pelvic harness to apply cyclic distraction forces to the spine; the patient lies on the table while a series of extension and distraction cycles are applied and then gradually released. The number of sessions varies and the per-session procedure code referenced is S9090 (vertebral axial decompression, per session).

Definitions: Vertebral axial decompression — a motorized spinal traction method using a computer-driven table and pelvic harness to apply cyclic distraction forces to the spine (per-session service represented by code S9090).

Overall evidence conclusion: Evidence is inconsistent, of low to moderate quality, and in many studies short-term; therefore the body of literature is insufficient to establish efficacy and clinical benefit for motorized spinal traction.

Notable systematic reviews: Wegner et al. (Cochrane, 2013) concluded traction has little or no impact on pain intensity, functional status, global improvement, or return to work for low back pain. More recent systematic reviews and meta-analyses (e.g., Vanti et al. 2023; Colombo et al. 2020) similarly report limited, low-quality, or short-term effects, reinforcing the not-covered determination.