BCBS RI sacroiliac joint fusion Coverage Update

Coverage and Medical Necessity Criteria

inv-01: MIS fusion — initial criteria

Minimally-invasive surgical (MIS) fusion of the sacroiliac joint is considered medically necessary when ALL of the following are met

MIS fusion medical necessity: 1) Moderate to severe pain with functional impairment that persists despite a minimum six months of intensive non-operative treatment that includes medication optimization, activity modification, bracing, and active therapeutic exercise (including a home exercise program) targeted at the lumbar spine, pelvis, sacroiliac joint and hip; 2) Patient report of typically unilateral pain caudal to L5, localized over the posterior sacroiliac joint and consistent with sacroiliac joint pain; 3) Thorough physical examination demonstrating localized tenderness with palpation over the sacral sulcus (Fortin's point) without tenderness of similar severity elsewhere and no other obvious pain sources; 4) Positive response to a cluster of three provocative tests (e.g. thigh thrust, compression, Gaenslen's, distraction, Patrick's sign, posterior provocation); 5) Absence of generalized pain behavior or generalized pain disorders (e.g. somatoform disorder, fibromyalgia); 6) Diagnostic imaging that includes plain radiographs and CT or MRI of the sacroiliac joint excluding destructive lesions, fracture, traumatic SIJ instability, or inflammatory arthropathy; 7) AP pelvic radiograph to rule out concomitant hip pathology; 8) CT or MRI of the lumbar spine to rule out neural compression or other degenerative conditions; 9) At least 75% reduction of pain and ability to perform previously painful maneuvers after image-guided, contrast-enhanced intra-articular SIJ injection on two separate visits using anesthetics of different duration; 10) A trial of at least one therapeutic intra-articular SIJ corticosteroid injection.see text

All listed conditions must be met

For Medicare Advantage Plans, radiofrequency denervation/ablation of the sacroiliac joint is not covered because the evidence is insufficient to demonstrate an improvement in net health outcome. For Commercial Products, radiofrequency denervation/ablation of the sacroiliac joint is considered not medically necessary for the same reason. (See CPT code 64625 in coding section.)

This medical policy is provided for informational purposes only and does not guarantee payment. Coverage determinations are governed by the member's subscriber agreement or employer agreement, which supersede this policy. Providers should verify member-specific benefits and eligibility by contacting the provider call center prior to delivering services.

CPT 64625 (Radiofrequency ablation, nerves innervating the sacroiliac joint, with image guidance) is not covered / not medically necessary for Medicare Advantage Plans and Commercial Products per this policy.

If a service is determined to be not medically necessary (or is medically necessary but not a covered benefit), the provider may not charge the member for the service unless the member was informed in advance and provided a written agreement to pay out-of-pocket. Refer to your participation agreement for applicable provisions.

Codes Relevant to Coverage Decisions

Covered CPT Codes (MIS fusion)CPTCovered

27279

Arthrodesis, sacroiliac joint, percutaneous or minimally invasive (indirect visualization), with image guidance, includes obtaining bone graft when performed, and placement of transfixing device

Covered CPT / G-codes (injections)mixedCovered

27096	Injection procedure for sacroiliac joint, anesthetic/steroid, with image guidance (fluoroscopy or CT) including arthrography when performed
64451	Injection anesthetic agent, nerves innervating the sacroiliac joint with image guidance
G0260	Injection procedure for sacroiliac joint; provision of anesthetic, steroid and/or other therapeutic agent, with or without arthrography

Not covered / Not medically necessaryCPTNot Covered

64625

Radiofrequency ablation, nerves innervating the sacroiliac joint, with image guidance (ie, fluoroscopy or computed tomography)

inv-09: Diagnostic pain reduction threshold — Key thresholds

Diagnostic pain reduction thresholdAt least 75% reduction of pain for the expected duration of two anesthetics on separate visits, with different durations of action

Functional improvement requirementAbility to perform previously painful maneuvers after the anesthetic injection

Administration methodImage-guided, contrast-enhanced intra-articular SIJ injection

Provider Requirements and Administrative Actions

Prior Authorization

Prior Authorization Required

Prior authorization is required for Medicare Advantage Plans and recommended for Commercial Products for minimally invasive surgical fusion of the sacroiliac joint (CPT 27279). Contact the provider call center to confirm member-specific prior authorization requirements and obtain necessary approvals before scheduling the procedure.

Affected code: CPT 27279

Documentation Required

Required Documentation for MIS Fusion

Documentation must demonstrate that ALL listed medical criteria are met prior to approval, including but not limited to: ≥6 months of intensive non‑operative treatment (medication optimization, activity modification, bracing, and active therapeutic exercise targeted at the lumbar spine, pelvis, SIJ and hip including a home exercise program); typical clinical presentation localized to the posterior SIJ with supportive physical exam (Fortin’s point tenderness and a cluster of ≥3 positive provocative maneuvers); appropriate diagnostic imaging excluding alternative sources of symptoms; diagnostic image‑guided, contrast‑enhanced intra‑articular SIJ block with ≥75% pain relief on two separate anesthetics; and at least one therapeutic intra‑articular corticosteroid SIJ injection trial.

Nonoperative Treatment Requirements Before Surgery

inv-22: Required prior to MIS fusion — 6 months of intensive non-operative treatment

Required conservative (non-operative) treatment prior to consideration of MIS fusion

Minimum duration and components of intensive non-operative treatment: Minimum six months of intensive non-operative treatment including medication optimization, activity modification, bracing, and active therapeutic exercise targeted at the lumbar spine, pelvis, sacroiliac joint and hip, including a home exercise program.

Diagnostic and Therapeutic Frequency Limits

inv-24: Diagnostic SIJ anesthetic injection frequency

Number of diagnostic injections requiredTwo diagnostic intra-articular SIJ anesthetic injections on separate visits

Anesthetic duration requirementEach injection must use an anesthetic of different duration of action

Pain reduction criterionEach injection must demonstrate ≥75% reduction of pain for the expected duration of the anesthetic

Preoperative and Diagnostic Imaging

Documentation Required

Preoperative imaging required for MIS fusion

Preoperative imaging must include plain radiographs and CT or MRI of the sacroiliac joint, an AP pelvic radiograph to rule out hip pathology, and CT or MRI of the lumbar spine to rule out neural compression or other degenerative conditions.

SIJ imaging: plain radiographs plus CT or MRI to exclude destructive lesions, fracture, traumatic instability, or inflammatory arthropathy.
AP pelvis radiograph to rule out hip pathology.
Lumbar spine CT or MRI to rule out neural compression or other degenerative causes of pain.

Services Deemed Not Medically Necessary

NOT COVERED: Radiofrequency denervation/ablation of the sacroiliac joint (CPT 64625) is not covered for Medicare Advantage Plans and is considered not medically necessary for Commercial Products due to insufficient evidence that the technology improves net health outcomes.

Background and Clinical Context

The sacroiliac joint (SIJ) can be a source of low back pain but is challenging to diagnose because pain from other spinal structures can refer to the SIJ and there is no single definitive radiographic or laboratory test. Image-guided, contrast-enhanced intra-articular SIJ anesthetic injection is used diagnostically to help confirm the SIJ as the pain source. Treatment options described in this policy include conservative measures, image-guided corticosteroid injections, minimally invasive sacroiliac joint fusion, and procedures such as radiofrequency denervation which this policy does not cover for certain products.

Definitions and Referenced Evidence

inv-19: Minimally invasive surgical (MIS) fusion — definition and examples

DefinitionPercutaneous or minimally invasive arthrodesis/fixation of the sacroiliac joint using implants intended to promote fixation and bone ingrowth to achieve fusion

Examples of implantsTriangular titanium implants (eg, iFuse) and cylindrical threaded devices (eg, Rialto, SImmetry, Silex, SambaScrew, SI-LOK)

Techniques/approachMinimally invasive lateral trans-iliac or percutaneous placement of transfixing devices with or without bone graft

inv-20: Diagnostic SIJ anesthetic injection — definition and purpose

DefinitionImage-guided intra-articular injection of anesthetic with contrast/arthrography into the sacroiliac joint to assess whether pain is relieved

Purpose

OpenPayer

Diagnosis and Treatment of Sacroiliac Joint Pain