CurrentBlue Cross Blue Shield - Rhode IslandPolicy N/A

Image-Guided Minimally Invasive Spinal Decompression for Spinal Stenosis

Defines coverage stance and coding for percutaneous image-guided minimally invasive decompression procedures for spinal stenosis for Blue Cross & Blue Shield of Rhode Island members, distinguishing Medicare Advantage and Commercial products.

Policy Summary

PayerBlue Cross Blue Shield - Rhode Island

PolicyImage-Guided Minimally Invasive Spinal Decompression for Spinal Stenosis

Policy CodePolicy N/A

Change TypeNo material changes

Effective DateFeb 1, 2023

Next Review DateJun 18, 2025

Key ActionVerify member benefits and any required prior authorization per related spinal procedures policies before billing.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

Not coveredCommercial stance: IG-MILD

CED onlyMedicare Advantage

0274T/0275T/G0276Codes listed

RCTs citedKey trials

NCD citedCMS guidance

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Coverage Criteria — IG‑MILD / PILD

Commercial Products — Not Medically Necessary

Commercial Products coverage stance: Image-guided minimally invasive spinal decompression (cervical, thoracic, and lumbar) is considered not medically necessary for Commercial Products because the evidence is insufficient to determine that the technology results in an improvement in the net health outcome.

References randomized trials, systematic reviews, and cohort studies but concludes evidence is insufficient; specific procedure codes (0275T, G0276) are listed as not medically necessary for Commercial Products.

Medicare Advantage — Covered Only in CMS CED Trials

Medicare Advantage coverage stance: Percutaneous image-guided lumbar decompression (PILD) is covered for Medicare Advantage members only when performed as part of a CMS‑approved Coverage with Evidence Development (CED) clinical trial.CMS‑approved CED trial enrollment

Claims for services rendered as part of a CMS‑approved clinical study must be billed with the appropriate modifier (Q0 for investigational clinical service or Q1 for routine clinical service in a study).

The IG‑MILD procedure is a percutaneous, fluoroscopically guided decompression technique intended to treat central spinal canal stenosis by resecting hypertrophied ligamentum flavum and small laminar bone fragments. The devices and single‑use instruments are not intended for use near lateral neural elements and are contraindicated for disc procedures; IG‑MILD cannot address nerve root compression or disc herniation and is limited to central stenosis cases.

The procedure is performed through a 6‑gauge cannula and uses contrast under fluoroscopic guidance with single‑use portals and tissue‑sculpting instruments to remove tissue dorsal to the dura. This technique differs from conventional open laminectomy and minimally invasive microscopic/endoscopic decompression because visualization is achieved solely by fluoroscopy rather than direct endoscopic or microscopic views.

For Commercial Products, the following procedure and HCPCS codes are listed as not medically necessary and would not be covered: 0275T (percutaneous laminotomy/laminectomy, interlaminar approach; lumbar) and G0276 (blinded procedure for lumbar stenosis performed in a CMS CED clinical trial).

Overall, IG‑MILD (image‑guided minimally invasive decompression) for lumbar, cervical, or thoracic spinal stenosis is considered not medically necessary for Commercial Products. Evidence cited includes randomized controlled trials and cohort studies for lumbar stenosis but is judged insufficient—because of limitations such as lack of blinding, variable comparator treatments, short follow‑up, and risk of bias—to demonstrate an improvement in net health outcome. No evidence was identified for cervical or thoracic IG‑MILD.

Reiterating coding and coverage stance: for Commercial Products, codes 0275T and G0276 are not medically necessary and are listed as non‑covered when billed for IG‑MILD procedures. This aligns with the overall determination that IG‑MILD lacks sufficient evidence of net benefit for Commercial populations.

Procedure and Billing Codes

Medicare Advantage covered HCPCS in CEDHCPCSCovered

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

Commercial Products CPT codesCPT

0274T	Percutaneous laminotomy/laminectomy (intralaminar approach) for decompression of neural elements, (with or without ligamentous resection, discectomy, facetectomy and/or foraminotomy) any method under indirect guidance (eg, fluoroscopic, CT), with or without the use of an endoscope, single or multiple levels, unilateral or bilateral; cervical or thoracic
0275T	Percutaneous laminotomy/laminectomy (interlaminar approach) for decompression of neural elements, (with or without ligamentous resection, discectomy, facetectomy and/or foraminotomy), any bilateral; lumbar

Commercial Products — codes listed as not medically necessaryHCPCSNot Covered

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

Covered/Permitted Procedure Codes (Commercial Products)CPTCovered

0274T

Percutaneous laminotomy/laminectomy (intralaminar approach) for decompression of neural elements, (with or without ligamentous resection, discectomy, facetectomy and/or foraminotomy) any method under indirect guidance (eg, fluoroscopic, CT), with or without the use of an endoscope, single or multiple levels, unilateral or bilateral; cervical or thoracic

Not Medically Necessary Procedure Codes (Commercial Products)CPTNot Covered

0275T

Percutaneous laminotomy/laminectomy (interlaminar approach) for decompression of neural elements, (with or without ligamentous resection, discectomy, facetectomy and/or foraminotomy), any bilateral; lumbar

Not Medically Necessary / Not Covered CodesHCPCSNot Covered

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

Provider Actions, Billing & Documentation

Prior Authorization

Not applicable. Benefits may vary by contract; refer to the member's Benefit Booklet, Evidence of Coverage, or Subscriber Agreement for prior authorization requirements.

Prior authorization: Not applicable per this policy document — verify member-specific requirements.
Benefit verification: Providers must follow member-specific benefit and eligibility documents.

Documentation Required

Coverage & Benefit Verification

Benefits and coverage may vary between groups/contracts. Refer to the appropriate section of the member's Benefit Booklet, Evidence of Coverage, or Subscriber Agreement. Providers should verify member-specific benefits and prior authorization requirements before rendering services.

Coverage: Benefits may vary between groups / contracts.
Provider action: Verify eligibility and benefits for each member prior to scheduling or performing services.

Background and Evidence Summary

Spinal stenosis is a pathologic narrowing of the spinal canal that can compress the spinal cord and nerve roots. Clinically, lumbar spinal stenosis commonly produces neurogenic claudication—leg pain and weakness worsened by standing or walking and often relieved by sitting or forward flexion. IG‑MILD targets hypertrophy of the ligamentum flavum contributing to central canal narrowing; it is a posterior, percutaneous decompression performed under fluoroscopic guidance and is meant to reduce postoperative morbidity compared with more invasive open decompression, but it does not address lateral neural element compression or disc herniation.

Definitions and Device Details

inv-22: IG-MILD / PILD — definition of image-guided minimally invasive decompression

TermImage-guided minimally invasive decompression (IG-MILD) / Percutaneous image-guided lumbar decompression (PILD)

PurposePercutaneous procedure for decompression of the central spinal canal in patients with spinal stenosis and hypertrophy of the ligamentum flavum.

TechniquePerformed under fluoroscopic (image) guidance using a specialized cannula and single-use surgical tools to resect ligamentum flavum and small laminar bone fragments; contrast media may be used to visualize the epidural space during decompression.

ScopeProposed as an alternative to conventional posterior decompression procedures for central canal stenosis only; does not address nerve root compression or disc herniation.

inv-23: MILD device/procedure limitations — description of instruments, guidance, and procedural limits

Policy Summary

PayerBlue Cross Blue Shield - Rhode Island

PolicyImage-Guided Minimally Invasive Spinal Decompression for Spinal Stenosis

Policy CodePolicy N/A

Change TypeNo material changes

Effective DateFeb 1, 2023

Next Review DateJun 18, 2025

Key ActionVerify member benefits and any required prior authorization per related spinal procedures policies before billing.

SourceLink

On This Page

Billing Rule

Medicare Advantage Clinical Trials Billing

If treating a Medicare Advantage member as part of a CMS-approved clinical study, follow CMS and plan-specific billing procedures and documentation requirements.

Clinical trial billing: Claims for services rendered as part of a CMS-approved clinical study must be billed with the appropriate modifier.
Required modifiers for Medicare Advantage clinical studies: Q0 (investigational clinical service provided in a clinical research study) and Q1 (routine clinical service provided in a clinical research study). Medicare claims filed without the Q0 modifier may be denied as not medically necessary.

Denial Risk

Commercial Product Billing — Denial Risk

For Commercial products certain codes are considered not medically necessary and will trigger denial if billed.

Not medically necessary codes for Commercial Products: 0275T, G0276.
Covered/allowed code example listed in policy for Commercial Products: 0274T (description in policy).

Prior Authorization

Related Policies & Prior Authorization May Be Required

Related policies may require prior authorization or contain additional billing guidance. Providers must verify authorization and follow related policy instructions as applicable.

Related policies: Clinical Trials Medicare Advantage Plans; Medicare Advantage Plans National and Local Coverage Determinations; Prior Authorization of Spinal Procedures.
Provider action: Verify whether prior authorization is required per related policies and by the member's contract.

Note

Provider Notice & Member Billing

This medical policy is for informational purposes and is not a guarantee of payment. Providers must follow member-specific documents (subscriber agreement, employer agreement) which supersede this policy. Do not charge members for non-covered services unless the member has been informed and has provided written agreement.

Provider notice: Policy is current at time of publication; BCBSRI may revise at any time.
Provider action: Refer to participation agreement(s) for billing and member charge provisions.

Specialized cannula (eg, 6-gauge portal cannula with back plate) and single-use tools such as surgical guide, bone rongeur, tissue sculptor, and trocar (mild device kit).

Imaging guidanceProcedure is performed solely under fluoroscopic guidance (indirect image guidance); contrast medium is used in the epidural space to aid visualization during decompression.

Anatomic limitsIntended for tissue resection at perilaminar/interlaminar space and ventral aspect of the lamina; devices are not intended for use near lateral neural elements and remain dorsal to the dura.

Procedure limitationsNot indicated for disc procedures or for addressing nerve root compression; designed for central stenosis only and for resection of ligamentum flavum and small laminar bone fragments.

inv-24: 0274T — definition/description of CPT 0274T (percutaneous laminotomy/laminectomy intralaminar approach)

Code0274T

Short descriptionPercutaneous laminotomy/laminectomy (intralaminar approach) for decompression of neural elements; with or without ligamentous resection, discectomy, facetectomy and/or foraminotomy; any method under indirect guidance (eg, fluoroscopic, CT), with or without endoscope; single or multiple levels; unilateral or bilateral; cervical or thoracic.

Context in policyListed among Commercial Products coding; 0274T described as a permitted/covered CPT code for decompression procedures in the document.