CurrentEmblemHealthPolicy MG.MM.SU.SScC

Lumbar Fusion and Intervertebral Fusion Devices

Clinical coverage criteria for lumbar spinal fusion procedures and intervertebral fusion devices; describes indications, limitations/exclusions, device and graft coverage, and applicable procedure and diagnosis codes for preauthorization and claim review for EmblemHealth members.

Policy Summary

PayerEmblemHealth

PolicyLumbar Fusion and Intervertebral Fusion Devices

Policy CodePolicy MG.MM.SU.SScC

Change TypeCoverage/criteria updates

Effective Date

Next Review Date

Key ActionTreating physicians must submit clinical evidence (imaging, conservative care documentation, functional impairment, and smoking status) to support preauthorization or post-payment review.

SourceLink

POLICY UPDATE CHANGES

Added congenital scoliosis and congenital kyphosis as covered indications (Apr. 12, 2024).

Added documented requirement pertaining to smoking (Apr. 8, 2022).

10Number of listed medical necessity indications/criteria groups

>=3Minimum documented non-smoking prior to surgery

MultipleApplicable procedure and diagnosis codes enumerated

Medically Necessary — General statement

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.

Medically Necessary — General statement

Lumbar fusion is considered medically necessary when any one of the following indications (1-10) is met with required subcriteria:

ANY of the following

ALL of the following
- ALL of the following
  - Spondylolisthesis (degenerative or isthmic) demonstrated on imaging OR spinal instability demonstrated on imaging OR instability anticipated secondary to need for bilateral or wide decompression with facetectomy or resection of pars interarticularis
- AND either
  - Neurogenic claudication or radicular pain causing significant functional impairment in a member who has failed 2-3 months of conservative care with documentation of central/lateral recess/foraminal stenosis on imaging
  - Severe or rapidly progressive motor loss, neurogenic claudication, disabling radicular pain, or cauda equina syndrome
ANY of the following
- ANY of the following
  - Cobb angle > 40°
  - Spinal cord compression with neurogenic claudication or radicular symptoms resulting in significant functional impairment in a member who has failed 2-3 months of conservative care
ALL of the following
- ANY of the following
  - Documented progression of deformity with persistent axial pain and impairment or loss of function unresponsive to ≥ 2 (to) 1 year of nonoperative treatment
  - Persistent and significant neurogenic symptoms (claudication or radicular pain) with impairment or loss of function unresponsive to ≥ 2 (to) 1 year of conservative nonsurgical care
  - Severe or rapidly progressive motor loss, neurogenic claudication, disabling radicular pain, or cauda equina syndrome
ALL of the following
- ALL of the following
  - Member has functional and/or neurological impairment
ALL of the following
- ALL of the following
  - Congenital (Wiltse type I) or acquired pars defect documented on X-ray
  - Persistent back pain (with or without neurogenic symptoms) with impairment or loss of function
  - Either unresponsive to > 6 months of conservative nonsurgical care OR presence of severe/rapidly progressive motor loss, neurogenic claudication, disabling radicular pain, or cauda equina syndrome
ALL of the following
- ALL of the following
  - Recurrent neurogenic symptoms or evidence of nerve-root irritation demonstrated by positive nerve-root tension sign, positive femoral tension sign, or corresponding neurologic deficit
  - Impairment or loss of function
  - Unresponsive to 2-3 months of medical management unless severe or rapidly progressive neurologic compromise present
  - Neural structure compression/instability documented by imaging at level/side corresponding to symptoms
ALL of the following
- ALL of the following
  - Occurs 2-6 months post initial fusion
  - Refractory to medical management with persistent axial back pain (with/without neurogenic symptoms) or with severe/rapidly progressive neurologic compromise
  - Member achieved significant symptom relief prior to current onset of impairment/functional loss
Spinal instability secondary to fracture, pseudoarthrosis, dislocation, infection (including tuberculosis), abscess/cyst, or tumor when extensive/destabilizing surgery is required
Iatrogenic or degenerative flatback syndrome with significant sagittal imbalance (≥ 5 cm) causing functional limitations (eg, pain, impaired ambulation/ADLs)
ALL of the following
- ALL of the following
  - Persistent back pain (with or without neurogenic symptoms) with impairment or loss of function unresponsive to 2-3 months of conservative therapy
  - Eccentric disc space collapse, spondylolisthesis, acute single-level scoliosis or lateral listhesis on imaging
  - Symptoms and functional measures correlate with imaging findings
  - Significant relief achieved for 2-6 months after prior fusion

ref

Cobb angle threshold for idiopathic scoliosis> 40°

Cobb angle / degenerative scoliosis threshold≥ 30°

Sagittal vertical axis threshold> 5 cm

Non-smoking documented3 months prior to surgical intervention

Conservative care duration (general)2-3 months (typical); some deformity criteria specify 1 year

Pseudoarthrosis timing2-6 months post initial fusion

Isthmic spondylolisthesis conservative care> 6 months

Applicable Procedure and Diagnosis Codes

Applicable CPT / Procedure CodesCPTCovered

22533	Arthrodesis, lateral extracavitary technique; lumbar
22534	Arthrodesis, lateral extracavitary technique; thoracic or lumbar, each additional vertebral segment
22558	Arthrodesis, anterior interbody technique; lumbar
22585	Arthrodesis, anterior interbody technique; each additional interspace
22612	Arthrodesis, posterior or posterolateral technique, single level; lumbar
22614	Arthrodesis, posterior or posterolateral technique; each additional vertebral segment
22630	Arthrodesis, posterior interbody technique; single interspace; lumbar
22632	Arthrodesis, posterior interbody technique; each additional interspace
22633	Arthrodesis, combined posterior or posterolateral technique with posterior interbody technique; single interspace; lumbar
22634	Arthrodesis, combined posterior or posterolateral technique with posterior interbody technique; each additional interspace

1–10 of 14

1/2

Applicable ICD-10 Diagnosis CodesICD-10

M48.062	Spinal stenosis, lumbar region with neurogenic claudication
M47.26	Other spondylosis with radiculopathy, lumbar region
M43.16	Spondylolisthesis, lumbar region
M51.16	Intervertebral disc disorders with radiculopathy, lumbar region
M41.26	Other idiopathic scoliosis, lumbar region
Q76.3	Congenital scoliosis due to congenital bony malformation
Q76.415	Congenital kyphosis, thoracolumbar region
M46.26	Osteomyelitis of vertebra, lumbar region
M96.1	Postlaminectomy syndrome, not elsewhere classified
S32.012A	Unstable burst fracture of unspecified lumbar vertebra, initial encounter for closed fracture

1–10 of 16

1/2

Non-covered / Not Medically Necessary ProceduresprocedureNot Covered

AxiaLIF	Axial lumbar interbody fusion (AxiaLIF) — Not considered medically necessary
LALIF	Laparoscopic anterior lumbar interbody fusion (LALIF) — Not considered medically necessary

Preauthorization, Documentation, and Billing Rules

Prior Authorization

Preauthorization required for fusion procedures

Requests for lumbar fusion and repeat fusion operations will be reviewed upon submission of medical records and imaging studies demonstrating remediable pathology and rationale for surgery over less invasive options. Preauthorization review requires submission of the member's medical records and imaging to allow clinical determination of medical necessity.

Documentation Required

Preauthorization clinical documentation

The treating physician must submit clinical evidence that the member meets the criteria to support preauthorization or post-payment review, including imaging studies, documentation of prior conservative treatment, assessment of functional impairment, and the member's smoking status (including documented non-smoking for three months prior to surgery).

Imaging demonstrating the pathology cited in the applicable criteria (eg, stenosis, spondylolisthesis, instability).
Documentation of prior conservative care and its duration (typically 2–3 months; some deformity criteria specify up to 1 year).
Objective evidence of functional impairment or neurologic deficit.
Smoking status with documentation of non-smoking for three months prior to surgical intervention.

Documentation Required

Repeat fusion documentation requirements

For repeat lumbar fusion requests, submit the rationale explaining why surgery is preferred over non‑invasive or less invasive alternatives and include signed documentation that the member participated in decision-making and understands the high rate of failure/complications.

Explicit rationale why repeat fusion is preferred to other treatments.
Signed shared‑decision documentation acknowledging elevated complication/failure risk.

Denial Risk

Denial risk for unsupported indications

Procedures performed solely for certain unsupported indications are not considered medically necessary and may be denied if documentation does not meet other criteria.

Chronic nonspecific low back pain without radiculopathy
Degenerative disc disease without stenosis or spondylolisthesis
Initial discectomy/laminectomy for neural structure decompression
Facet syndrome
Disc herniation (when not meeting other policy criteria)

Documentation Required

Device and graft usage constraint

Instrumentation and bone graft materials must be used in accordance with FDA‑approved labeling; recombinant human bone morphogenetic protein‑2 (rhBMP‑2) is allowed only as an adjunct to instrumented ALIF or posterolateral lumbar intertransverse fusion and is considered investigational and not medically necessary as an adjunct to PLIF or TLIF.

Use of instrumentation and graft materials must adhere to FDA labeling.
rhBMP‑2: medically necessary only as adjunct to instrumented ALIF or posterolateral lumbar intertransverse fusion; investigational/not medically necessary for PLIF or TLIF.

Clinical and Technical Background

Spinal fusion is a surgical procedure intended to stop motion at a painful vertebral segment by adding bone graft and rigid fixation to achieve a bony arthrodesis, thereby reducing pain generated by a mobile joint. Approaches to lumbar spinal fusion include anterior, posterior, and lateral access and may be performed with traditional open incisions or with minimally invasive/minimal access techniques depending on the procedure and clinical circumstances. The two principal fusion techniques are posterolateral fusion (placing bone between the transverse processes and stabilizing with pedicle screws/rods) and interbody fusion (placing bone graft between vertebral endplates within the disc space), and these techniques are often used in conjunction to achieve fusion. (See Table 1 for covered open/MI procedures.)

Graft options for fusion include autograft (patient’s own bone), allograft/cadaveric bone, demineralized bone matrix (DBM), and biologic adjuncts. EmblemHealth considers cadaveric allograft and DBM (examples listed in policy such as DBX, Grafton, AlloFuse, etc.) to be medically necessary for spinal fusions. Recombinant human bone morphogenetic protein-2 (rhBMP-2) is considered medically necessary only as an adjunct to instrumented ALIF or posterolateral lumbar intertransverse fusion but is investigational/not medically necessary as an adjunct for PLIF or TLIF. Use of instrumentation and bone graft materials must follow FDA labeling.

EmblemHealth also defines specific limitations and conditions for graft selection: autograft may not be feasible or considered medically necessary when donor tissue is unavailable (prior autograft), insufficient, or contraindicated because of advanced age (eg, ≥ 65), excessive harvest risk, comorbidities, poor bone quality (osteoporosis), obesity, or local donor-site morbidity. The policy requires documented member compliance with non-smoking for three months prior to surgical intervention as part of the preauthorization documentation.

OpenPayer

Lumbar Fusion and Intervertebral Fusion Devices

Medically Necessary — General statement

Applicable Procedure and Diagnosis Codes

Preauthorization, Documentation, and Billing Rules

Clinical and Technical Background

Defined Terms

Recent Policy Changes

Lumbar Fusion and Intervertebral Fusion Devices

Medically Necessary — General statement

Applicable Procedure and Diagnosis Codes

Preauthorization, Documentation, and Billing Rules

Clinical and Technical Background

Defined Terms

Read-With Policies

Recent Policy Changes