CurrentBlue Cross Blue Shield of VermontPolicy 6.01.VT23

Diagnosis and Treatment of Sacroiliac Joint Pain

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This policy governs coverage and medical-necessity criteria for diagnostic and therapeutic sacroiliac joint injections, SI joint fixation or fusion, nerve blocks, and radiofrequency procedures, subject to the member’s contract or benefit plan.

Policy Summary

PayerBlue Cross Blue Shield of Vermont

PolicyDiagnosis and Treatment of Sacroiliac Joint Pain

Policy CodePolicy 6.01.VT23

Change TypeNo material change

Effective DateAugust 1, 2026

Last ReviewApr 1, 2026

Next Review DateApril 1, 2027

Key ActionObtain prior approval for open SI joint arthrodesis and anesthetic and/or steroid injections of nerves innervating the SI joint.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

3 monthsConservative management before diagnostic or corticosteroid injection

6 months

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CurrentBlue Cross Blue Shield of VermontPolicy 6.01.VT23

Diagnosis and Treatment of Sacroiliac Joint Pain

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Sign up for bcbsvermont Policy 6.01.VT23 alerts

Get alerted when Policy 6.01.VT23 changes without checking for updates manually.

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Policy Summary

PayerBlue Cross Blue Shield of Vermont

PolicyDiagnosis and Treatment of Sacroiliac Joint Pain

Policy CodePolicy 6.01.VT23

Change TypeNo material change

Effective DateAugust 1, 2026

Last ReviewApr 1, 2026

Next Review DateApril 1, 2027

Key ActionObtain prior approval for open SI joint arthrodesis and anesthetic and/or steroid injections of nerves innervating the SI joint.

SourceLink

POLICY UPDATE CHANGES

No material clinical or coverage changes in this revision.

3 monthsConservative management before diagnostic or corticosteroid injection

6 months

Nonoperative treatment before SI joint fixation or fusion

3Maximum corticosteroid SI joint injections per year

75%Required pain reduction after each diagnostic injection

3Positive provocative tests required for fixation or fusion

3Investigational procedure categories

Medical Necessity Criteria

Diagnostic anesthetic injection

Diagnostic anesthetic injection may be considered medically necessary when ALL of the following are met:

Required criteria

Pain has failed to respond to 3 months of conservative management, which may include nonsteroidal anti-inflammatory medications, acetaminophen, manipulation, physical therapy, and a home exercise program.3 months
Dual controlled diagnostic blocks use 2 anesthetic agents with differing durations of action.
The injections are performed under imaging guidance.

Therapeutic corticosteroid injection

Corticosteroid injection may be considered medically necessary when ALL of the following are met:

Required criteria

Pain has failed to respond to 3 months of conservative management, which may include nonsteroidal anti-inflammatory medications, acetaminophen, manipulation, physical therapy, and a home exercise program.3 months
The injection is performed under imaging guidance.
No more than 3 injections are given in 1 year.No more than 3 injections in 1 year

Investigational procedures

The following services are considered investigational:

Investigational services

Fusion or stabilization of the sacroiliac joint for back pain presumed to originate from the SI joint under conditions other than the listed medically necessary criteria or using devices not listed above.
Radiofrequency denervation of the sacroiliac joint.
Arthrography of the sacroiliac joint.

This policy does not address treatment of sacroiliac joint pain due to infection, trauma, or neoplasm. These conditions are outside the scope of the policy’s coverage criteria.

Required Conservative Management

Failure of conservative treatment

Document failure of the applicable conservative-treatment program before proceeding with an injection or SI joint fixation or fusion.

Conservative-treatment requirements

Complete the applicable duration of conservative treatment: 3 months before a diagnostic anesthetic or corticosteroid injection, or a minimum of 6 months before SI joint fixation or fusion.3 months before injections; minimum 6 months before fixation or fusion
Use prescription-strength analgesics for several weeks at a dose sufficient to produce a therapeutic response.
Use anti-inflammatory medication, with or without adjunctive medication such as nerve membrane stabilizers or muscle relaxants.
Physical therapy requirement

Treatment Frequency Limits

Sacroiliac Joint Corticosteroid Injection

Maximum injectionsNo more than 3 corticosteroid injections

Measurement periodIn 1 year

Applies toTherapeutic sacroiliac joint corticosteroid injections for SI joint pain

Imaging and Guidance Requirements

Prior Authorization

Prior Approval and SI Injection Authorization

Prior approval is required for SI joint injections. Therapeutic SI injection authorization requires documentation that the applicable medical-necessity criteria are met, including conservative-treatment failure and image guidance.

Diagnostic anesthetic injection: pain failed to respond to 3 months of conservative management, such as NSAIDs, acetaminophen, manipulation, physical therapy, and a home exercise program.
Therapeutic corticosteroid injection: pain failed to respond to 3 months of conservative management; injection is performed under imaging guidance; and no more than 3 injections in 1 year.
Clinical documentation must identify the injection as diagnostic or therapeutic and include the relevant treatment history, conservative-treatment response, imaging guidance, and injection frequency.

Documentation Required

Required Imaging and Conservative-Treatment Documentation for SI Joint Fixation or Fusion

Covered and Investigational Codes

Procedures that may be medically necessary when applicable criteria are metCPTCovered

27096	Injection procedure for sacroiliac joint, anesthetic/steroid, with image guidance (fluoroscopy or CT) including arthrography when performed.
27278	Percutaneous sacroiliac joint arthrodesis, including placement of intra-articular implant, without placement of transfixation device.
27280	Arthrodesis, open sacroiliac joint including bone graft, including instrumentation, when performed.
64451	Injection(s), anesthetic agent(s) and/or steroid; nerves innervating the sacroiliac joint, with image guidance (ie, fluoroscopy or computed tomography).

Procedures that may be medically necessary when applicable criteria are metHCPCSCovered

G0260

Injection procedure for sacroiliac joint; provision of anesthetic, steroid and/or other therapeutic agent, with or without arthrography.

Investigational CPT codesCPTExperimental

27279	Arthrodesis, sacroiliac joint, percutaneous or minimally invasive (indirect visualization), with image guidance, includes obtaining bone graft when performed, and placement of transfixing device.
64625	Radiofrequency ablation, nerves innervating the sacroiliac joint, with image guidance (ie, fluoroscopy or computed tomography).

Investigational or unlisted proceduresHCPCSExperimental

G0259	Injection procedure for sacroiliac joint; arthrography.
27299	Unlisted procedure, pelvis or hip joint.

Conservative Management Requirement

Required duration3 months of conservative management

Applies beforeDiagnostic anesthetic or corticosteroid injection

Examples of conservative careNonsteroidal anti-inflammatory medications, acetaminophen, manipulation, physical therapy, and a home exercise program

Maximum Corticosteroid SI Joint Injections

Maximum frequencyNo more than 3 corticosteroid injections

Time periodPer 1 year

Authorization, Documentation, and Coverage Risks

Prior Authorization

Obtain prior approval for specified SI procedures

Obtain prior approval for open SI joint arthrodesis and for anesthetic and/or steroid injections of nerves innervating the SI joint.

Open SI joint arthrodesis
Anesthetic and/or steroid injection of nerves innervating the SI joint

Prior Authorization

Authorize therapeutic SI joint injections

Obtain prior approval for an SI joint injection involving an anesthetic, steroid, and/or another therapeutic agent, whether or not arthrography is performed.

Applies to HCPCS G0260
Includes injections with or without arthrography

Prior Authorization

Verify member-specific authorization and benefits

Policy Background

Sacroiliac joint pain may be evaluated with image-guided anesthetic injections and treated with corticosteroid injection or, in selected patients, sacroiliac joint fixation or fusion. Before fusion or fixation is considered, the policy requires prolonged conservative treatment together with objective clinical, imaging, and diagnostic-injection findings. Diagnostic blocks should be performed under fluoroscopic guidance; a successful controlled diagnostic block involves 2 separate positive blocks on different days using local anesthetic only, or a placebo-controlled series, with pain relief lasting for the expected duration of the anesthetic.

Key Definitions

Successful Controlled Diagnostic Block

Positive blocksTwo separate positive blocks performed on different days

Medication usedLocal anesthetic only; no steroids or other drugs

Alternative methodA placebo-controlled series of blocks may be used

Guidance and responseBlocks are performed under fluoroscopic guidance and must reduce pain for the duration of the local anesthetic used

Fortin’s Point

Examination locationOver the posterior sacral sulcus

Finding

Not Covered Services and Indications

The following are not covered under the policy’s listed medical-necessity criteria: SI joint fusion or stabilization for presumed SI joint back pain when the applicable criteria are not met or when devices other than those specified are used; radiofrequency denervation of the sacroiliac joint; and sacroiliac joint arthrography.

Policy Summary

PayerBlue Cross Blue Shield of Vermont

PolicyDiagnosis and Treatment of Sacroiliac Joint Pain

Policy CodePolicy 6.01.VT23

Change TypeNo material change

Effective DateAugust 1, 2026

Last ReviewApr 1, 2026

Next Review DateApril 1, 2027

Key ActionObtain prior approval for open SI joint arthrodesis and anesthetic and/or steroid injections of nerves innervating the SI joint.

SourceLink

On This Page

Participate in at least 6 weeks of physical therapy, including active exercise.At least 6 weeks

Document why physical therapy could not be tolerated.

Evaluate and appropriately manage associated cognitive, behavioral, or addiction issues.

Document the individual’s compliance with the conservative-treatment program.

For SI joint fixation or fusion, submit clinical documentation supporting the required imaging evaluation of the SI joint, pelvis, and lumbar spine. The imaging must establish that competing or causative pathology has been excluded and that SI joint injury or degeneration is present.

SI joint plain radiographs plus CT or MRI exclude destructive lesions, such as tumor or infection, and inflammatory arthropathy.
An anteroposterior pelvic radiograph rules out concomitant hip pathology.
Lumbar spine CT or MRI rules out neural compression or other degenerative conditions that may cause low back or buttock pain.
SI joint imaging indicates evidence of injury and/or degeneration.
Documentation must also support at least 6 months of intensive nonoperative treatment, including medication optimization, activity modification, bracing, active therapeutic exercise targeting the lumbar spine, pelvis, SI joint, and hip, and a home exercise program.

Prior Authorization

Diagnostic SI Joint Injection Before Fusion

Before SI joint fusion, document two separate image-guided, contrast-enhanced intra-articular SI joint injections with at least a 75% reduction in pain for the expected duration of the anesthetic used. A therapeutic SI joint injection, such as a corticosteroid injection, must also have been performed at least once and requires authorization.

The diagnostic injections must be intra-articular, image-guided, and contrast-enhanced.
Pain relief must be at least 75% on each of 2 separate occasions.
Clinical documentation should include the injection dates, guidance and contrast use, anesthetic response, and the therapeutic SI joint injection history.
Prior approval is required for the therapeutic SI injection and for the planned SI joint fixation or fusion.

Coverage contextApplies when corticosteroid injection is used to treat SI joint pain

Pain Severity Before SI Joint Fixation or Fusion

Minimum pain ratingAt least 5 on a 0-to-10 rating scale

Functional impactPain must impact quality of life or limit activities of daily living

ProcedureSI joint fixation or fusion

Intensive Nonoperative Treatment

Minimum duration6 months of intensive nonoperative treatment

Required componentsMedication optimization, activity modification, bracing, and active therapeutic exercise targeting the lumbar spine, pelvis, SI joint, and hip

Exercise requirementTreatment includes a home exercise program

Diagnostic Injection Response

Required pain reductionAt least 75% reduction in pain

Number of occasionsOn 2 separate occasions

Injection conditionsFollowing image-guided, contrast-enhanced intra-articular SI joint injections, with reduction lasting for the expected duration of the anesthetic

Interval Before Diagnostic Block

Minimum intervalAt least 4 weeks

RestrictionNo therapeutic intra-articular injections, including steroids, saline, or other substances, during the interval

BeforeA controlled diagnostic block

Verify the member’s benefits and contract before providing the service because prior approval and coverage may vary by plan. Incomplete authorization requests may be delayed pending submission of missing information.

Check the subscriber contract and member benefit plan
Confirm NEHP/ABNE, Federal Employee Program, or ASO-specific benefits when applicable
Submit all required clinical information

Documentation Required

Document clinical support for SI joint treatment

Document the clinical findings supporting SI joint treatment, including pain severity and functional impact, pain location, examination findings, imaging, diagnostic-block response, and therapeutic injection history.

Pain severity and effect on quality of life or activities of daily living
Pain localized over the posterior SI joint and Fortin’s point tenderness
Results of 3 provocative tests
Required SI joint, pelvic, and lumbar imaging findings
Responses to diagnostic blocks and completion of a therapeutic SI joint injection when applicable

Step Therapy

Record conservative-treatment failure

Document failure of the applicable conservative-treatment program before proceeding. Records should show prescription analgesics at therapeutic doses, anti-inflammatory medication with or without adjunctive medication, physical therapy or why it could not be tolerated, management of cognitive, behavioral, or addiction issues, and compliance.

At least 6 weeks of physical therapy with active exercise, or documented inability to tolerate it
Medication optimization and activity modification when evaluating fixation or fusion
Bracing, targeted therapeutic exercise, and a home exercise program when evaluating fixation or fusion

Denial Risk

Maintain compliance to avoid recoupment

Providers and facilities may be audited for compliance with the medical policy. If an audit identifies noncompliance, Blue Cross VT may recoup all non-compliant payments.

Maintain records supporting medical necessity and policy compliance
Expect recoupment risk for non-compliant payments

Billing Rule

Include documentation for unlisted procedures

Submit clinical documentation with claims for the unlisted pelvis or hip joint procedure. A medical director will review the documentation and make the coverage determination.

Applies to code 27299
Clinical documentation is required at the time of claims submission

Denial Risk

Meet and document medical-necessity criteria

Coverage may be denied when the applicable medical-necessity requirements are not documented. This includes the required conservative-treatment duration, diagnostic-block response, imaging, examination findings, pain severity, or prior therapeutic-injection criteria.

Document 3 months of conservative management before diagnostic anesthetic or corticosteroid injection
Document at least 6 months of failed intensive nonoperative treatment before fixation or fusion
Document required imaging, examination findings, and diagnostic responses

Denial Risk

Avoid investigational procedures or indications

Radiofrequency denervation of the SI joint and SI joint arthrography are investigational. SI joint fusion or stabilization for presumed SI joint back pain is also investigational when performed under conditions other than the listed medically necessary criteria or with other devices.

Radiofrequency denervation: CPT 64625
SI joint arthrography: HCPCS G0259
Fusion or stabilization outside the listed criteria or using unlisted devices

Note

Confirm benefit-plan limitations

Coverage and authorization depend on the member’s contract and benefit plan. Benefits may be unavailable or different under an employer plan, ASO arrangement, NEHP/ABNE benefits, or the Federal Employee Program; contract and employer benefit-plan language takes precedence over the medical policy when there is a conflict.

Verify benefits before providing the service
Check for plan-specific exclusions or limitations
Contact the applicable health-plan or FEP customer service when needed

Localized tenderness with palpation

Clinical significanceIdentifies localized sacroiliac joint tenderness; tenderness should not be of similarly severe intensity elsewhere