ModifiedUnitedHealthcarePolicy 2026T0640H

Minimally Invasive Spine Surgery Procedures

Defines UnitedHealthcare Commercial and Individual Exchange coverage stance for specific minimally invasive spine procedures (e.g., AxiaLIF, PILD, sacroplasty, APLD, PELD, MILD, LALIF, endoscopic TLIF) and provides supporting definitions, evidence summaries, and applicable codes. Affects providers submitting claims for these procedures under UnitedHealthcare Commercial and Individual Exchange plans.

Policy Summary

PayerUnitedHealthcare

PolicyMinimally Invasive Spine Surgery Procedures

Policy CodePolicy 2026T0640H

Change TypeDefinitions added, removed, and updatedsupporting content refreshed

Effective DateFeb 1, 2026

Next Review DateN/A

Key ActionObtain and document prior authorization when requesting percutaneous or endoscopic spinal procedures and include diagnosis, prior conservative therapy, and rationale.

SourceLink

POLICY UPDATE CHANGES

Added definition of 'Transforaminal Lumbar Interbody Fusion'.

Removed definition of Interlaminar Lumbar Instrumented Fusion (ILIF).

Removed definition of Nucleoplasty.

Removed definition of Percutaneous or Endoscopic Lumbar Fusion.

Removed definitions of Transforaminal (TESSYS ® ) and Interlaminar Endoscopic Surgical Systems.

Removed definition of Tubular Retractor.

Updated definition of Automated Percutaneous Lumbar Discectomy (APLD).

Updated definition of Axial Lumbar Interbody Fusion (AxiaLIF).

Updated definition of Endoscope.

Updated definition of Endoscopic Discectomy.

Updated definition of Fluoroscopy.

Updated definition of Image-Guided Minimally Invasive Lumbar Decompression (MILD ® ).

Updated definition of Interbody Fusion.

Updated definition of Laparoscopic Anterior Lumbar Interbody Fusion (LALIF).

Updated definition of Open Spine Surgery.

Updated definition of Percutaneous Endoscopic Lumbar Discectomy (PELD).

Updated definition of Percutaneous Image-Guided Lumbar Decompression (PILD).

Updated definition of Posterior Lumbar Spine Surgery.

Updated definition of Sacroplasty.

Updated Description of Services, Clinical Evidence, and References sections to reflect the most current information.

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

procedures listed as unproven / not medically necessary

~10major code entries listed

1.3%AxiaLIF overall complication rate

9,152AxiaLIF surveillance population

95.7%sacroplasty clinical success

Coverage Criteria for Minimally Invasive Spine Procedures

Evidence summaries and guideline context (informational)

Evidence summaries and guideline context — informational

Axial Lumbar Interbody Fusion (AxiaLIF): Evidence is primarily from retrospective case series and postmarketing surveillance with no randomized controlled trials comparing AxiaLIF to standard fusion techniques. Small single-center series report favorable pain and functional outcomes in some cohorts (Balsano et al., 2020; Zeilstra et al., 2013), while comparative retrospective data suggest higher rates of pseudarthrosis, complications, and revisions with AxiaLIF versus ALIF (Anand et al., 2018). Large postmarketing surveillance captured uncommon but serious complications (Gundanna et al., 2011). An ECRI review concluded that available evidence is at high risk of bias and insufficient to support safety and effectiveness for one-level lumbar interbody fusion; RCTs comparing AxiaLIF with other interbody fusion approaches are needed to establish comparative effectiveness (ECRI, 2020). NICE guidance advises that transaxial interbody lumbosacral fusion should be used only with special arrangements for governance, consent, audit, or research due to serious but recognized complications (NICE, 2018).

Applicable Procedure and Diagnosis Codes

Applicable procedure codes (reference list)CPT

0200T	Percutaneous sacral augmentation (sacroplasty), unilateral injection(s), including the use of a balloon or mechanical device, when used, 1 or more needles, includes imaging guidance and bone biopsy, when performed.
0201T	Percutaneous sacral augmentation (sacroplasty), bilateral injections, including the use of a balloon or mechanical device, when used, 2 or more needles, includes imaging guidance and bone biopsy, when performed.
22586	Arthrodesis, pre-sacral interbody technique, including disc space preparation, discectomy, with posterior instrumentation, with image guidance, includes bone graft when performed, L5-S1 interspace.
22630	Arthrodesis, posterior interbody technique, including laminectomy and/or discectomy to prepare interspace (other than for decompression), single interspace, lumbar.
22899	Unlisted procedure, spine.
62287	Decompression, percutaneous, of nucleus pulposus of intervertebral disc, any method utilizing needle-based technique to remove disc material under fluoroscopic imaging or other form of indirect visualization, with discography and/or epidural injection(s) at the treated level(s), when performed, single or multiple levels, lumbar.
62330	Decompression, percutaneous, with partial removal of the ligamentum flavum, including laminotomy for access, epidurography, and imaging guidance (i.e., CT or fluoroscopy), bilateral; one interspace, lumbar.
62331	Decompression, percutaneous, with partial removal of the ligamentum flavum, including laminotomy for access, epidurography, and imaging guidance (i.e., CT or fluoroscopy), bilateral; additional interspace(s), lumbar (List separately in addition to code for primary procedure).
62380	Endoscopic decompression of spinal cord, nerve root(s), including laminotomy, partial facetectomy, foraminotomy, discectomy and/or excision of herniated intervertebral disc, 1 interspace, lumbar.
G0276	Blinded procedure for lumbar stenosis, percutaneous image-guided lumbar decompression (PILD) or placebo-control, performed in an approved coverage with evidence development (CED) clinical trial.

Procedure and diagnosis codes (not specified in this section)mixed

No explicit CPT/ICD codes were listed in this document segment.

Procedures discussed (no explicit codes listed in this section)mixed

No codes listed

Provider Requirements, Prior Authorization, and Documentation

Prior Authorization

Prior authorization — verify with member plan

Verify prior authorization requirements with the member's specific UnitedHealthcare plan before scheduling procedures. This policy provides guidance only and does not authorize benefits; the member's benefit plan document and any applicable mandates govern coverage and preauthorization rules.

Prior authorization requirements vary by product (Commercial, Individual Exchange, Medicare Advantage) and by benefit design.
This policy does not grant authorization; obtain any required prior authorization from UnitedHealthcare before performing services.

Documentation Required

Clinical indication and conservative management — required documentation

Document the clinical indication for the procedure, including symptoms, neurologic findings, and diagnostic imaging that demonstrate the specific anatomic pathology (for example, ligamentum flavum hypertrophy for MILD, central canal stenosis, or symptomatic disc herniation). Provide clear documentation of prior conservative management and its duration, and indicate the failure to improve with noninvasive therapies when applicable.

Background and Clinical Context

Low back pain and radiculopathy related to herniated discs are common conditions; many cases improve with nonoperative measures. Surgical decompression (for example, discectomy or microdiscectomy) is considered when neuropathic pain persists despite conservative management. Minimally invasive and percutaneous approaches have been investigated as alternatives to open surgery, but the quality and consistency of evidence across techniques vary, and guideline panels and HTAs often call for randomized trials to clarify comparative effectiveness and long‑term outcomes.

Definitions of Procedures and Devices

Automated Percutaneous Lumbar Discectomy (APLD)

DefinitionPercutaneous removal of protruding disc material using a large-bore needle inserted directly into the disc space.

Typical indicationLumbar disc herniation with protruding nucleus causing radiculopathy after failed conservative care.

Key technique notePerformed via a percutaneous approach through the skin and tissues into the disc under imaging guidance.

Axial Lumbar Interbody Fusion (AxiaLIF)

DefinitionAlso called trans-sacral, transaxial, or presacral interbody fusion; a minimally invasive presacral technique to access L5–S1 (and L4–S1) along the long axis of the spine via a small incision next to the tailbone.

Evidence summaryNo randomized controlled trials demonstrating comparative safety and effectiveness versus standard fusion methods; evidence consists mainly of case series, retrospective analyses, and postmarketing surveillance.

Policy Revision History

02/01/2026definitions_updatedLatest

Added a definition for 'Transforaminal Lumbar Interbody Fusion' and removed multiple legacy definitions (Interlaminar Lumbar Instrumented Fusion, Nucleoplasty, Percutaneous or Endoscopic Lumbar Fusion, Transforaminal (TESSYS®) and Interlaminar Endoscopic Surgical Systems, Tubular Retractor); numerous existing definitions were revised and supporting sections (Description of Services, Clinical Evidence, References) were updated.

Policy Summary

PayerUnitedHealthcare

PolicyMinimally Invasive Spine Surgery Procedures

Policy CodePolicy 2026T0640H

Change TypeDefinitions added, removed, and updatedsupporting content refreshed

Effective DateFeb 1, 2026

Next Review DateN/A

Key ActionObtain and document prior authorization when requesting percutaneous or endoscopic spinal procedures and include diagnosis, prior conservative therapy, and rationale.

SourceLink

On This Page

Specify level(s) and laterality of pathology on imaging (MRI/CT) and correlate with clinical exam.
Conservative care typically includes activity modification, physical therapy, pharmacologic management (NSAIDs, short course opioids if indicated), and epidural steroid injections when appropriate; document dates, therapies tried, duration, and response.
For procedures with limited long‑term evidence (eg, PILD/MILD, percutaneous/endoscopic fusion techniques), include documentation showing an adequate trial and failure of conservative management prior to consideration of the procedure.

Documentation Required

Documentation expectations and coverage governance

When requesting prior authorization or submitting documentation for review, include procedure-specific clinical notes, relevant imaging reports, prior treatment records, and objective outcome measures where available (eg, VAS, ODI). If an intervention is considered investigational or unproven in this policy, anticipate additional review and potential denial; coverage is ultimately determined by the member's benefit plan.

Include operative reports and follow-up notes for prior surgeries if applicable.
Provide rationale for procedure selection when multiple surgical options exist, referencing guideline-based recommendations when available.
For procedures listed as unproven or not medically necessary (eg, AxiaLIF, PILD, MILD, percutaneous sacroplasty, endoscopic-only TLIF), clearly document why alternatives are not appropriate and reference prior conservative or surgical treatments.

Safety dataA 5-year postmarketing surveillance study (n = 9,152) reported an overall complication rate of 1.3%, most commonly bowel injury (0.6%) and transient intraoperative hypotension (0.2%).

Percutaneous Endoscopic Lumbar Discectomy (PELD)

DefinitionMinimally invasive removal of herniated disc material using an endoscope through a small linear skin incision with camera visualization to protect neural structures.

Evidence summaryMultiple meta-analyses and HTAs report similar mid- to long-term clinical efficacy to other surgical alternatives but overall evidence quality is low and heterogeneous; some analyses report higher recurrent herniation rates.

Research needLarge, blinded randomized trials with long-term follow-up are needed to establish comparative safety and efficacy versus open microdiscectomy.

Sacroplasty

DefinitionMinimally invasive placement of polymethyl methacrylate cement into a sacral insufficiency fracture to provide mechanical stabilization and pain relief; approaches include bilateral short/long axis, transiliac, interpedicular, coaxial vision, and balloon-assisted techniques.

Evidence summaryFor osteoporotic or malignant sacral fractures, systematic review/meta-analysis (n = 861) reported high technical (98.9%) and clinical (95.7%) success with low cement-leak complication (0.3%); evidence quality overall is low and lacks RCTs.

LimitationInsufficient and low-quality evidence to support sacroplasty for sacral insufficiency fractures due to causes other than osteoporosis or malignancy.

MILD / PILD (Percutaneous Image-Guided Minimally Invasive Lumbar Decompression)

DefinitionImage-guided, minimally invasive lumbar decompression procedures (e.g., mild®/PILD) that remove hypertrophied ligamentum flavum and other thickened tissue via a percutaneous approach under imaging guidance to enlarge the spinal canal.

Evidence summaryRCTs and systematic reviews report short-term improvements in pain and function for selected patients with ligamentum flavum hypertrophy, but long-term durability and comparative effectiveness versus open decompression remain uncertain.

Common deviceMost published literature evaluates the proprietary mild® device kit (Vertos Medical, Inc.).

AxiaLIF — Additional context and evidence note

Technique/contextAxiaLIF is a presacral axial approach intended for one- or two-level L5–S1 (and L4–S1) fusion that accesses the spine along its long axis via a small incision near the tailbone.

Evidence noteAvailable studies include case series and retrospective analyses; ECRI and other assessments note high risk of bias and call for RCTs comparing AxiaLIF with standard interbody fusion techniques.

Postmarketing dataLarge postmarketing surveillance (n = 9,152) provides complication rates but does not substitute for comparative RCT evidence on clinical outcomes.

MILD / PILD — Device examples and additional context

Device examplesThe mild® device kit (Vertos Medical, Inc.) is the proprietary system most commonly studied for PILD/MILD procedures.

Clinical contextTrials included in systematic reviews used conservative therapies before MILD; inclusion/exclusion criteria and prior treatments varied across studies.

Evidence limitationsMeta-analyses report heterogeneity, potential publication bias, and limited long-term follow-up; further large prospective studies are needed.

LALIF / R-ALIF (Laparoscopic / Robotic ALIF variants)

DefinitionLaparoscopic ALIF (LALIF) and robotic-assisted ALIF (R-ALIF) are minimally invasive anterior lumbar interbody fusion variants using endoscopic or robotic approaches to access the anterior lumbar spine via small abdominal incisions or robotic platforms.

Evidence summarySystematic review (48 studies) found LALIF outcomes similar to mini-open ALIF but with longer operative times and higher technical demand; R-ALIF evidence is limited and suggests potential benefits but is constrained by small, heterogeneous studies.

Practical considerationsLALIF is now rarely used; R-ALIF may offer reduced certain complications but involves higher cost, training needs, and logistical challenges.

PILD / MILD — Targeting ligamentum flavum hypertrophy

Target pathologyProcedures target hypertrophied ligamentum flavum causing central canal stenosis and neurogenic claudication.

Procedure goalPercutaneous removal of posterior soft tissue to enlarge the spinal canal and relieve nerve compression while minimizing tissue disruption.

Evidence noteRCTs and HTAs indicate short-term symptomatic improvement for selected patients, but long-term durability and comparative effectiveness versus open decompression remain uncertain.

PLDD / Percutaneous Laser Disc Decompression / Dekompressor

DefinitionPercutaneous laser disc decompression (PLDD) and mechanical aspiration (e.g., Dekompressor) are minimally invasive techniques that remove or vaporize nuclear disc material to reduce intradiscal pressure and relieve radicular symptoms.

OutcomesSmall RCTs and observational studies report variable short-term benefits but concerningly high reoperation/resurgery rates in some series (e.g., PLDD resurgery up to 26% or higher reoperation rates in certain trials).

RecommendationEvidence is insufficient to consider PLDD a replacement for open discectomy; further well-designed comparative studies are needed.

PELD — Alternate definition and context

Alternate definitionPELD uses percutaneous approaches (transforaminal or interlaminar) with endoscopic visualization to remove herniated disc material as an alternative to open microdiscectomy.

Comparative findingsMeta-analyses suggest similar mid- and long-term clinical efficacy to microendoscopic or open techniques but with often faster recovery and smaller incisions; recurrence rates and heterogeneity across studies vary.

Evidence gapMost studies are observational or low quality; more randomized controlled trials are needed to define comparative effectiveness and patient selection.

Sacroplasty — Additional definition/context

Definition/contextSacroplasty involves percutaneous sacral augmentation with cement to stabilize sacral insufficiency fractures and reduce pain, using various approaches including balloon-assisted techniques.

Evidence splitFor osteoporotic or malignant SIFs, meta-analysis shows high technical and clinical success with substantial pain reduction up to 12 months; for SIFs from other causes, evidence is minimal and low quality.

Research needLarger randomized trials comparing sacroplasty with conservative or sham procedures are needed to establish long-term effectiveness and functional outcomes.

BE-LIF / PE-TLIF / dualPortal (Biportal / Percutaneous Fusion Techniques)

DefinitionBE-LIF, PE-TLIF, and dualPortal (biportal/dual-portal) techniques are endoscopic or percutaneous approaches for lumbar interbody fusion intended to achieve fusion with less invasive access than MIS-TLIF or open fusion.

Evidence summarySystematic reviews and meta-analyses report comparable fusion and complication rates to MIS-TLIF with potential benefits of less blood loss, shorter hospital stay, and faster early recovery; however, most studies are retrospective with small samples and short follow-up.

ConclusionCurrent evidence is limited and insufficient to draw strong conclusions on long-term comparative effectiveness; larger prospective trials are needed.

PE-TLIF / Endo-TLIF / BE-LIF / MIS-TLIF — Definitions and variants

Definition/variantsPE-TLIF (percutaneous endoscopic TLIF), Endo-TLIF, BE-LIF (biportal endoscopic LIF), and MIS-TLIF are variants of transforaminal lumbar interbody fusion using percutaneous endoscopic, biportal endoscopic, or minimally invasive surgical techniques to achieve interbody fusion with less tissue disruption.

Comparative findingsMeta-analyses report similar effectiveness and fusion rates between endoscopic/PE-TLIF techniques and MIS-TLIF, with advantages of reduced blood loss, shorter hospital stay, and faster early recovery for endoscopic techniques but often longer operative or fluoroscopy times.

LimitationsHeterogeneity, small sample sizes, retrospective designs, and limited long-term follow-up limit the strength of conclusions; further well-designed prospective RCTs are required.

Transforaminal Lumbar Interbody Fusion (TLIF) — New definition

Definition addedTransforaminal Lumbar Interbody Fusion (TLIF) — a modification of posterior lumbar interbody fusion that approaches the intervertebral body from the side (transforaminal), removes the disc, and places bone graft via the transforaminal route.

Context of changeThe policy revision (02/01/2026) added this definition and removed several older definitions (e.g., ILIF, Nucleoplasty, Percutaneous-Endoscopic Lumbar Fusion), and updated multiple definitions for clarity.

Clinical noteTLIF variants include open, MIS, endoscopic, biportal, and percutaneous approaches; evidence for endoscopy-only TLIF is limited and identified as unproven in this policy.