ModifiedUnitedHealthcarePolicy CS364LA.C

Minimally Invasive Spine Surgery Procedures (Louisiana)

Policy governing coverage stance for multiple minimally invasive spinal procedures for UnitedHealthcare Community Plan members in Louisiana.

Policy Summary

PayerUnitedHealthcare

PolicyMinimally Invasive Spine Surgery Procedures (Louisiana) (Retired April 1, 2026)

Policy CodePolicy CS364LA.C

Change TypeMaterial: Coverage rationale reviseddefinitions and coding notes updatedpolicy retirement noted

Effective DateJun 1, 2025

Next Review DateN/A

Key ActionObtain prior authorization and document prior conservative therapy, imaging, and clinical rationale when requesting percutaneous or endoscopic spinal procedures; APLD and PELD are considered unproven and may be denied.

SourceLink

POLICY UPDATE CHANGES

Coverage Rationale: Added language to clarify Automated Percutaneous Lumbar Discectomy (APLD) and Percutaneous Endoscopic Lumbar Discectomy (PELD) are unproven and not medically necessary for intervertebral disc decompression.

Definitions: Updated definition of 'Interbody Fusion'.

Applicable Codes: Removed notation indicating HCPCS code G0276 is not on the State of Louisiana Medicaid Fee Schedule.

Supporting Information: Updated Clinical Evidence and References sections to reflect the most current information.

Policy active for Louisiana plan membership (policy retired April 1, 2026).

9unproven procedures

LAstate

CPT/HCPCS listedcodes referenced

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low to insufficientevidence quality

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Coverage Criteria — Unproven and Evidence-Based Considerations

Unproven / Not medically necessary procedures

The following spinal procedures are considered unproven and not medically necessary due to insufficient evidence of efficacy:

Not medically necessary procedures: Axial Lumbar Interbody Fusion (AxiaLIF); Percutaneous Image-Guided Lumbar Decompression (PILD/PLDD); Percutaneous sacral augmentation (sacroplasty) with or without balloon or bone cement; Automated Percutaneous Lumbar Discectomy (APLD) for intervertebral disc decompression; Percutaneous Endoscopic Lumbar Discectomy (PELD) for intervertebral disc decompression; Minimally Invasive Lumbar Decompression (MILD); Laparoscopic Anterior Lumbar Interbody Fusion (LALIF); Transforaminal lumbar interbody fusion (TLIF) performed using endoscopy-only visualization (endoscopy-only TLIF).

Listed procedures judged to have insufficient evidence of efficacy in policy.

Coverage stance and evidence-based considerations

Coverage considerations reflect limited, low-quality, or inconclusive evidence; candidate selection, comparative effectiveness, and long-term outcomes are often uncertain.

Evidence limitations and candidate selection: Available studies for AxiaLIF, laparoscopic ALIF (LALIF), MILD, PILD/PLDD, and PLDD are primarily retrospective case series, small RCTs, or nonrandomized trials with short-to-moderate follow-up and risk of bias; many trials lack robust control groups.

Supports cautious coverage, need for informed consent and plan-specific governance.

Procedures with some supportive but limited evidence: MILD has a randomized, prospective multicenter trial with up to 2-year follow-up demonstrating symptom and functional improvement in selected patients with hypertrophic ligamentum flavum; durability data are limited beyond trial constraints.

May be considered in select patients who have failed conservative therapy and meet trial-like inclusion criteria.

Procedures with concerning comparative outcomes: Comparative series for AxiaLIF report variable fusion rates and higher rates of pseudarthrosis, major complications, and revisions compared with ALIF in some reports, raising concerns about comparative safety and effectiveness.

Comparative outcomes favor standard open approaches in available series.

Insufficient evidence for long-term benefit: Laparoscopic ALIF and PLDD have limited or outdated evidence that does not allow strong conclusions about long-term benefit versus open surgery; PLDD trials have reported higher reoperation rates in some studies.

Additional high-quality RCTs and long-term data are needed.

Procedure-specific evidence stance

Evidence and guideline-based coverage considerations by procedure (informational):

PILD/PLDD: Evidence is insufficient to determine efficacy of percutaneous image-guided lumbar decompression (PILD) or PLDD compared with placebo or open decompression; trials include unblinded RCTs and observational studies with risk of bias and mixed results including higher reoperation rates.evidence insufficient

See policy evidence summary.

Nucleoplasty/PLDD outcomes: Observational series and limited trials report short-term symptom relief for nucleoplasty/PLDD but show declining long-term satisfaction and notable reoperation rates (e.g., up to ~38% in some PLDD reports), limiting confidence in sustained benefit.mixed/limited evidence

Long-term comparative effectiveness uncertain.

Percutaneous Endoscopic Lumbar Discectomy (PELD/PETD/PTED): Systematic reviews and meta-analyses indicate PELD/PETD/PTED can achieve similar mid- and long-term pain and functional outcomes to open or microdiscectomy and may reduce hospital stay and blood loss, but included studies are heterogeneous, mostly nonrandomized, and some analyses report higher recurrence or reoperation rates; high-quality large RCTs are lacking.

Sacroplasty — coverage-relevant clinical criteria (study-derived)

Procedures may be considered when specific clinical and prior-treatment conditions are met (study-derived candidate selection criteria):

Sacroplasty candidate criteria: Patient has severe sacral pain refractory to standard conservative management (e.g., bed rest, analgesics, partial weight bearing, orthosis), imaging evidence of unilateral or bilateral sacral insufficiency fracture or focal sacral lesion, and symptoms attributable to sacral pathology.

Derived from inclusion criteria in Kortman et al.; evidence is retrospective without controls.

PETD/PTED — comparative outcomes and evidence quality

When evaluating PETD and related endoscopic discectomy approaches, consider the following comparative findings:

PETD/PTED comparative outcomes: PETD/PTED generally demonstrates similar clinical efficacy (VAS, ODI) to open or other minimally invasive discectomy techniques, with advantages in shorter hospital stay, less blood loss, and faster recovery in many studies, but may require longer operative and fluoroscopy times; evidence consists largely of small RCTs and observational studies with heterogeneity and limitations.

Some meta-analyses report no difference in long-term functional outcomes but note methodological limitations.

Endoscopic fusion techniques — evidence summary for PE-TLIF/Endo-LIF/Endo-TLIF

Endoscopic/percutaneous fusion (PE-TLIF/Endo-LIF/Endo-TLIF) coverage considerations:

Endoscopic fusion summary: Endoscopic and percutaneous fusion techniques (PE-TLIF, Endo-LIF, Endo-TLIF) show similar short- to mid-term clinical outcomes and fusion rates compared with MIS-TLIF in meta-analyses and cohort studies, and may have advantages of reduced blood loss and shorter hospital stay but often have longer operative and fluoroscopy times; studies are heterogeneous and predominantly nonrandomized.

Existing evidence is limited to small nonrandomized studies and meta-analyses; RCTs and long-term data are needed.

Coverage conclusions and evidence summary

Summary of coverage-relevant clinical conclusions from evidence and guideline statements

APLD/PELD not medically necessary: Automated Percutaneous Lumbar Discectomy (APLD) and Percutaneous Endoscopic Lumbar Discectomy (PELD) are considered unproven and not medically necessary for intervertebral disc decompression.

Policy language added effective 06/01/2025.

TLIF and minimally invasive variants evidence: Comparative studies and meta-analyses report similar clinical and radiologic outcomes for TLIF, MIS-TLIF, Endo-TLIF, biportal endoscopic TLIF, PLIF, and OLIF with some perioperative advantages for minimally invasive approaches; however, evidence quality is low, studies are heterogeneous, and randomized controlled trials with long-term follow-up are lacking.

Clinical decisions should consider limited evidence quality and plan-specific requirements.

Codes in the Applicable Codes list that are marked with an asterisk (*) are noted in the policy as not appearing on the State of Louisiana Medicaid Fee Schedule and therefore may not be covered by the State of Louisiana Medicaid Program. Inclusion of a code in this policy is for reference only and does not guarantee coverage or reimbursement; plan-specific, federal, state, or contractual rules govern actual benefit determination.

Per the AANS/CNS guidance cited in the policy, lumbar fusion is not recommended for isolated lumbar stenosis in the absence of deformity or instability. Fusion in cases of isolated stenosis without instability has not been shown to improve outcomes and therefore is not supported by the referenced guideline.

The document does not present explicit contractual exclusions in the cited sections; rather, it summarizes evidence limitations and guideline positions that inform coverage considerations. Where exclusionary language is required by benefit terms, reviewers must defer to the applicable plan or state contract for definitive exclusion rules.

The policy notes that procedures supported only by retrospective case series, small cohorts, or heterogeneous nonrandomized studies — i.e., lacking higher-quality comparative evidence such as randomized controlled trials or well-controlled comparative cohorts — may be excluded from coverage when payer policy requires randomized or higher-level evidence to establish net health benefit.

This policy was retired for Louisiana plan membership effective 04/01/2026; the record indicates Louisiana membership was disenrolled on April 1, 2026.

The policy explicitly lists the following procedures as unproven and not medically necessary due to insufficient evidence of efficacy: Axial Lumbar Interbody Fusion (AxiaLIF); Percutaneous Image-Guided Lumbar Decompression (PILD); Percutaneous sacral augmentation (sacroplasty) with or without a balloon or bone cement; Automated Percutaneous Lumbar Discectomy (APLD) for intervertebral disc decompression; Percutaneous Endoscopic Lumbar Discectomy (PELD) for intervertebral disc decompression; Minimally Invasive Lumbar Decompression (MILD); Laparoscopic Anterior Lumbar Interbody Fusion (LALIF); and Transforaminal lumbar interbody fusion (TLIF) that utilizes only endoscopic visualization (endoscopy-only TLIF).

The policy provides examples of insufficient evidence in the literature; for instance, health technology assessments and trials summarized in the review indicate that procedures such as percutaneous lumbar disc decompression (PLDD) have limited, low-quality evidence and report higher reoperation rates in some trials, underlying an overall insufficiency of evidence to conclude long-term net benefit.

The policy identifies specific procedures for which the evidence is judged insufficient to establish a net health benefit. Examples called out include image-guided percutaneous disc decompression techniques (PLDD/PILD) and percutaneous sacroplasty for nonmalignant sacral insufficiency fractures — Hayes evidence reviews cited in the policy found the overall body of evidence to be poor or minimal and concluded that additional controlled studies are needed.

Evidence for percutaneous or percutaneous endoscopic fusion techniques is limited: available literature is primarily case series and small studies. The policy states that, because the published trials comparing percutaneous endoscopic fusion to conventional open approaches are lacking, strong conclusions regarding safety and efficacy cannot be made and further studies are needed.

The policy explicitly states that Automated Percutaneous Lumbar Discectomy (APLD) and Percutaneous Endoscopic Lumbar Discectomy (PELD) are considered unproven and not medically necessary for intervertebral disc decompression; this coverage rationale language was added in the 06/01/2025 revision and is reflected in the policy conclusions.

Procedure and Billing Codes

Referenced procedure codes (group 1)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.
0275T	Percutaneous laminotomy/laminectomy (interlaminar approach) for decompression of neural elements, (with or without ligamentous resection, discectomy, facetectomy and/or foraminotomy) any method, under indirect image guidance (e.g., fluoroscopic, CT), single or multiple levels, unilateral or bilateral; lumbar.
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.

Referenced procedure codes (group 2)CPT | HCPCS

22899	Unlisted procedure, spine.
62287	Decompression procedure, 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.
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.

No explicit codes in this sectionmixed

No codes listed

Applicable Codes (policy notes)HCPCS

G0276

HCPCS code referenced in applicable codes section (notation about Medicaid fee schedule removed)

Provider Requirements, Prior Authorization, and Documentation

Prior Authorization

Prior authorization and plan-specific coverage governance

Prior Authorization and medical necessity determinations should be made in accordance with the member’s federal, state, and contractual benefit terms; this policy is informational and does not replace plan-specific coverage rules. Inclusion of a procedure or diagnosis code in this policy does not imply coverage or reimbursement. Providers and billers must verify member benefits and any prior authorization requirements before providing services.

Verify federal, state, and contractual benefit terms before applying this policy.
Listing of a code does not guarantee coverage or payment.

Prior Authorization

Prior authorization recommended for percutaneous/endoscopic fusion variants

For percutaneous and endoscopic fusion variants (for example PE-TLIF, PE-TLIF/PE-TLIF-style procedures and other novel percutaneous/endoscopic fusion techniques), prior authorization is recommended to ensure appropriate patient selection, documentation of conservative therapy and imaging correlation, and that the proposed technique is consistent with plan coverage. Reviewers should expect documentation of indication, prior treatments, imaging, and informed consent discussing limited or evolving evidence.

Clinical Background and Context

Back pain and radiculopathy from disc herniation and lumbar spinal stenosis are common clinical problems; many patients improve with conservative care. When symptoms persist, surgical decompression may be considered. The policy emphasizes that conservative management is typically first-line, and many studies included in the evidence base required prior conservative therapy before enrollment. Because outcomes vary and many minimally invasive techniques have limited or low-quality evidence, careful candidate selection, documentation of failed conservative therapy, and attention to guideline-based indications are important in evaluating requests for surgical procedures.

Definitions of Procedures and Terms

Automated Percutaneous Lumbar Discectomy (APLD) — definition and technique summary

DefinitionAutomated Percutaneous Lumbar Discectomy (APLD) is a minimally invasive percutaneous technique using a thin, blunt-tipped suction and cutting probe inserted through the skin into the mid-portion of a herniated lumbar intervertebral disc under fluoroscopic guidance to remove degenerated central disc material.

Technique summaryThe probe is advanced into the disc nucleus and powered suction/cutting is used to remove some or all of the degenerated central disc to relieve nerve root pressure while minimizing disruption of surrounding tissues.

Intended use / patient selectionIntended as an alternative to chemonucleolysis, open discectomy, or other percutaneous discectomy for patients with relatively small disc protrusions without fragmentation or complete extrusion who have failed conservative therapy.

Percutaneous Endoscopic Lumbar Discectomy (PELD) — definition and technique summary

DefinitionPercutaneous Endoscopic Lumbar Discectomy (PELD) is a minimally invasive procedure that uses an endoscope under fluoroscopic guidance to access a herniated lumbar disc and remove disc material using laser or mechanical instruments.

Policy Revision History

2026-04-01retiredLatest

Policy retired for Louisiana plan membership; Louisiana membership disenrolled on Apr. 1, 2026.

2025-06-01revised

Coverage Rationale updated to state Automated Percutaneous Lumbar Discectomy (APLD) and Percutaneous Endoscopic Lumbar Discectomy (PELD) are unproven and not medically necessary for intervertebral disc decompression; definitions and applicable codes notes were updated and clinical evidence/references were refreshed.

Policy Summary

PayerUnitedHealthcare

PolicyMinimally Invasive Spine Surgery Procedures (Louisiana) (Retired April 1, 2026)

Policy CodePolicy CS364LA.C

Change TypeMaterial: Coverage rationale reviseddefinitions and coding notes updatedpolicy retirement noted

Effective DateJun 1, 2025

Next Review DateN/A

SourceLink

On This Page

similar efficacy but limited quality

Further well-designed randomized trials needed.

Percutaneous sacroplasty: Evidence for sacroplasty in sacral insufficiency fractures (SIFs) is limited and of poor quality; observational studies report pain reduction and improved mobility in patients refractory to conservative care, but guideline support is minimal/unclear and controlled trials are lacking.limited evidence

Consider only after documented failure of conservative therapy in appropriate patients.

Document clinical indication, prior conservative treatments, and objective imaging findings.
Include operative plan and rationale for percutaneous/endoscopic fusion approach.
Consider prior authorization for newer or less-established fusion techniques.

Documentation Required

Conservative therapy before surgery

Conservative (nonsurgical) management is generally considered first-line for most degenerative lumbar conditions. Prior to authorization for many minimally invasive or percutaneous spinal procedures, documentation should show an adequate trial of conservative therapy (typical duration and interventions described below) unless contraindicated.

Typical conservative care may include physical therapy, activity modification, NSAIDs/analgesics, and documented trials of epidural steroid injections where appropriate.
Document duration of nonsurgical management (commonly several weeks to months) and response to therapy.

Documentation Required

Conservative therapy before MILD

When procedures such as MILD are considered, document prior conservative treatments (for example epidural steroid injections) and the comparative rationale — many trials used ESI as a comparator. For minimally invasive lumbar decompression (MILD), include documentation of symptom duration, functional impairment, and prior nonsurgical interventions.

Document prior epidural steroid injection(s) and other conservative measures and their outcomes.
Describe symptom timeline, functional limitations (e.g., walking distance) and imaging correlation.

Documentation Required

Conservative therapy before sacroplasty

For sacroplasty, conservative nonsurgical management should generally be tried before considering percutaneous sacral augmentation. The evidence base for sacroplasty is limited and consists largely of small observational studies; guidance and guidelines provide minimal or unclear support. Authorization reviewers should confirm failed conservative therapy and document objective imaging correlates and functional impact.

Document trial and failure of conservative treatments (e.g., bed rest, analgesics, partial weight bearing, orthosis).
Provide imaging evidence of sacral insufficiency fracture or focal sacral lesion.
Be aware that the overall body of evidence is poor and additional research is needed.

Denial Risk

Limited high-quality evidence may trigger increased scrutiny

Many procedures discussed in this policy have limited high-quality evidence (often case series, small cohorts, or retrospective reports). Limited or low-quality evidence may prompt heightened review, require additional documentation, and increase the likelihood of denial if net health benefit is not established.

Expect reviewers to request higher-quality comparative evidence for coverage determinations.
Procedures supported primarily by case series or small observational cohorts will be scrutinized.

Documentation Required

Document reported complications and post‑marketing surveillance data

Document reported complications, surveillance, and long-term outcomes when available. For some techniques (for example AxiaLIF), post-marketing surveillance has reported specific complications; include these data when submitting for authorization to allow balanced risk assessment.

Include known complication rates, reoperation or pseudarthrosis data, and any device/surveillance reports.
Provide patient counseling/informed consent documentation noting known risks and limited long-term data.

Documentation Required

Clinical indication and evidence limitations

Clinical indication should be clearly stated and supported by objective imaging and documented prior treatments. When evidence is limited or evolving, include documentation that the patient was informed about the uncertainty of benefit and alternative options.

State the treating diagnosis, correlate with imaging findings (MRI/CT), and list prior conservative treatments and durations.
Include documentation of informed consent that discusses limited or uncertain evidence when relevant.

Step Therapy

No explicit step therapy protocols described

No explicit step‑therapy protocols are specified in this document. Reviewers should follow plan-level step therapy or utilization management programs if applicable and coordinate with prior authorization requirements.

If the member’s benefit includes step therapy rules, those requirements must be followed.
This policy does not establish step therapy; check contract/plan tools.

Billing Rule

Coding and documentation note

When submitting requests for services that may be considered experimental, investigational, or unproven (for example APLD, PELD for disc decompression, percutaneous sacroplasty in many contexts), include complete coding and documentation. Inclusion of a code in this policy is for reference only and does not imply coverage.

Provide relevant CPT/HCPCS/ICD-10 codes and operative notes.
Attach imaging, prior treatment records, and rationale for the proposed procedure.

Technique summaryA working channel is placed percutaneously under image guidance, the endoscope provides visualization of the working space and instruments, and herniated disc material is aspirated or excised via the endoscopic portal.

Visualization and toolsProcedure relies on endoscopic visualization with specialized instruments and may use laser or mechanical removal methods to reduce tissue disruption compared with open discectomy.

PILD — Percutaneous Image-Guided Lumbar Decompression definition

DefinitionPercutaneous Image-Guided Lumbar Decompression (PILD) is a posterior decompression of the lumbar spine performed under indirect image guidance without direct visualization of the surgical area.

Technique summaryThe procedure is performed percutaneously under fluoroscopic or other image guidance using specialized cannulae and instruments to achieve decompression without an open exposure or direct visual inspection.

Clinical intentAimed at relieving neural compression from lumbar spinal stenosis or disc pathology using a minimally invasive posterior approach guided by imaging.

AxiaLIF (Axial LIF) — short definition and approach description

DefinitionAxial Lumbar Interbody Fusion (AxiaLIF), also called trans-sacral or transaxial interbody fusion, is a minimally invasive presacral approach to L5–S1 fusion that accesses the disc space through a small incision near the tailbone (presacral corridor).

Approach descriptionThe surgeon enters adjacent to the coccyx, removes the abnormal disc, places bone graft into the disc space and supplements with a large central screw; additional posterior percutaneous screws may be placed for stability.

Clinical contextUsed for L5–S1 (and occasionally L4–S1) arthrodesis to treat degenerative disc disease or selected spondylolisthesis, but comparative series report variable fusion and higher complication/revision rates versus ALIF in some studies.

AxiaLIF — expanded definition and clinical context

Expanded definitionAxial lumbar interbody fusion (AxiaLIF) is a presacral/transaxial minimally invasive technique for lumbosacral fusion that accesses the L5–S1 interspace along the long axis of the spine via a small para-coccygeal incision, allowing disc removal and interbody grafting with supplemental instrumentation.

Outcomes and safety contextRetrospective series report clinical improvement and fusion rates (e.g., one series reported 65% complete fusion) but comparative studies (Anand et al.) found higher pseudarthrosis, major complication, and revision rates with AxiaLIF versus ALIF; NICE recommends special arrangements for governance and further research.

Policy relevancePolicy cites variable outcomes and higher complication/revision risks with AxiaLIF, informing the cautious coverage stance and need for clinical governance and informed consent.

MILD — Minimally Invasive Lumbar Decompression (Vertos MILD) definition

DefinitionMinimally Invasive Lumbar Decompression (MILD®) is a percutaneous image-guided decompression procedure using a specialized cannula and instruments to remove small amounts of bone and ligamentum flavum to enlarge the central spinal canal for treatment of lumbar spinal stenosis with neurogenic claudication.

Technique summaryUnder fluoroscopic guidance, a dedicated cannula and tools are introduced percutaneously to sculpt bone and hypertrophic ligament near the spinal canal, aiming to relieve neural compression with minimal tissue disruption.

Evidence contextRandomized and prospective studies report symptomatic and functional improvement up to 1–2 years in selected patients with hypertrophic ligamentum flavum, but long-term durability and broader comparative effectiveness remain uncertain.

PLDD — Percutaneous Lumbar Disc Decompression definition

DefinitionPercutaneous Lumbar Disc Decompression (PLDD) is an image-guided percutaneous procedure intended to remove or reduce disc material to treat lumbar disc herniation and relieve nerve root compression.

Technique summaryNeedle-based techniques (e.g., mechanical, suction, coblation) are used under fluoroscopic or CT guidance to reduce intradiscal volume or remove nucleus material, aiming to decompress the disc without open surgery.

Evidence and limitationsHealth technology assessments and trials report limited, low-quality evidence and in some studies higher reoperation rates (e.g., reoperation up to ~38% in one RCT), leaving uncertainty about long-term comparative effectiveness.

Percutaneous Image-Guided Lumbar Decompression (PILD/PLDD) — combined definition block

Combined definitionPercutaneous Image-Guided Lumbar Decompression (PILD) and Percutaneous Lumbar Disc Decompression (PLDD) encompass minimally invasive posterior and disc-targeted percutaneous decompression techniques performed under fluoroscopic guidance without open visualization to relieve neural compression from lumbar stenosis or disc herniation.

Technique characteristicsThese techniques use percutaneous access and imaging guidance (fluoroscopy/CT) with specialized cannulae and instruments to remove or debulk bone, ligament, or nucleus material without direct surgical exposure.

Evidence summaryAvailable evidence includes small RCTs, prospective cohorts, and case series with overall low-to-insufficient quality; studies show mixed results including higher reoperation rates in some PLDD trials, supporting the policy's conclusion of insufficient evidence of net health benefit.

Nucleoplasty / percutaneous disc decompression — definition

DefinitionNucleoplasty (percutaneous disc decompression) uses a specialized catheter introduced into the disc nucleus under imaging guidance to apply radiofrequency energy (coblation) to ablate nuclear material and create channels to reduce disc volume and intradiscal pressure.

Technique summaryUnder fluoroscopic or CT guidance a needle and introducer are placed into the disc nucleus and radiofrequency coblation energy is applied to ablate tissue, with the goal of decompressing the disc and relieving radicular or axial pain.

Evidence considerationsObservational and some randomized data show short-term symptom relief in selected patients, but long-term follow-up indicates declining satisfaction and notable reoperation rates; study limitations include nonrandomized designs and small samples.

Percutaneous Endoscopic Lumbar Discectomy (PELD / PETD / PTED) — endoscopic technique definitions

DefinitionPercutaneous Endoscopic Lumbar Discectomy (PELD / PETD / PTED) refers to endoscopic lumbar discectomy techniques (transforaminal, interlaminar, or other portals) that use small portals and an endoscope to visualize and remove herniated disc material.

Technique approachesCommon approaches include percutaneous endoscopic transforaminal discectomy (PETD/PTED) and interlaminar endoscopic discectomy (PEID), employing an endoscopic working channel under fluoroscopy and specialized instruments to excise or aspirate disc fragments.

Clinical and evidence contextMeta-analyses and comparative studies report similar mid- and long-term clinical efficacy to open or microdiscectomy with advantages in invasiveness and hospital stay, but some analyses note higher recurrence rates and overall evidence quality is low to moderate, warranting further large RCTs.

Percutaneous sacroplasty — definition (image-guided cement injection)

DefinitionPercutaneous sacroplasty is an image-guided percutaneous injection of bone cement (eg, PMMA or bioceramic) into sacral insufficiency fractures or sacral lesions to reduce pain and improve mobility in patients refractory to conservative management.

Technique summaryUnder fluoroscopic or CT guidance, thin hollow tubes and needles are placed into the sacrum and 2–5 mL of bone cement is injected into the fracture or lesion using long- or short-axis approaches.

Clinical context and evidenceObservational studies report reductions in pain and analgesic use in patients who failed conservative care, but overall evidence is limited and of poor quality with unclear guideline support; additional controlled studies are needed.

Percutaneous sacroplasty — expanded definition and clinical context for SIF

Expanded definitionPercutaneous sacroplasty involves image-guided injection of PMMA or bioceramic cement into sacral insufficiency fractures (SIF) or focal sacral lesions in patients with severe sacral pain refractory to conservative measures such as bed rest, analgesics, partial weight bearing, and orthoses.

Clinical inclusion criteria (study-derived)Studies that reported benefit generally enrolled patients with imaging-confirmed bilateral or unilateral SIF, severe pain despite conservative therapy, and symptoms attributable to sacral pathology; follow-up in some cohorts was ≥1 year.

Evidence limitationsAvailable evidence consists mainly of nonrandomized controlled studies and uncontrolled cohorts with retrospective designs, limiting conclusions about long-term efficacy and guideline support.

Percutaneous endoscopic transforaminal discectomy (PETD/PTED) — definition and approach

DefinitionPercutaneous endoscopic transforaminal discectomy (PETD/PTED) is a minimally invasive transforaminal endoscopic approach to remove herniated disc material through a small portal, using endoscopic visualization and specialized instruments.

Approach characteristicsPETD/PTED accesses the disc via the transforaminal corridor, often under fluoroscopic guidance; compared with interlaminar approaches it may have longer fluoroscopy and operative times but similar clinical outcomes.

Comparative evidenceSystematic reviews and meta-analyses of PETD/PTED versus PEID or open techniques show comparable symptom and functional outcomes with advantages in invasiveness, but differences in operative/fluoroscopy times and mixed findings on complication and recurrence rates; most evidence is small RCTs and observational studies.

Endoscopic lumbar interbody fusion (Endo-LIF / PE-TLIF / Endo-TLIF) — definition and scope

DefinitionEndoscopic lumbar interbody fusion (Endo-LIF / PE-TLIF / Endo-TLIF) refers to percutaneous or full-endoscopic approaches to achieve lumbar interbody fusion using small portals, endoscopic visualization, and percutaneous instrumentation to reduce soft-tissue trauma.

Scope and techniqueTechniques include percutaneous endoscopic transforaminal lumbar interbody fusion (PE-TLIF) and other endoscopic TLIF variants that use endoscopic access for cage placement and percutaneous pedicle screw fixation, often associated with a steep learning curve.

Evidence summaryMeta-analyses and systematic reviews report similar short- to mid-term clinical outcomes and fusion rates compared with MIS-TLIF, with advantages of less blood loss and shorter hospitalization but longer operative and fluoroscopy times; studies are heterogeneous and largely nonrandomized, indicating need for RCTs.

Interbody Fusion — definition updated in policy

Updated definition noteInterbody fusion is defined as a surgical procedure that fuses two adjacent vertebral bodies of the spine; the policy indicates the definition was updated in the current revision (specific revised wording is in policy updates).

Clinical indicationsLumbar interbody fusion may be performed for spinal stenosis with instability, spondylolisthesis, scoliosis, following discectomy, or for adjacent-level disease when fusion is indicated.

Policy contextPolicy history notes an update to the 'Interbody Fusion' definition as part of the 06/01/2025 revision; reviewers should reference the policy for the precise revised wording.