Ambetter Nevada SIJ Injection Coverage Update

Coverage Criteria for Sacroiliac Joint (SIJ) Interventions

Initial diagnostic or therapeutic SIJ injection

Covered when ALL of the following are met

Initial SIJ injection criteria: Member has somatic or nonradicular low back and lower extremity pain below the level of L5 that interferes with activities of daily living for at least three months; tenderness by palpation present over the sacroiliac joint; positive response to at least three SIJ pain provocation tests (distraction, compression, thigh thrust/posterior pelvic pain provocation test, Gaenslen's, Patrick/FABER test, or sacral thrust; note: thrust tests may not be recommended in pregnancy or connective tissue disorders); failure of conservative therapy including ALL of the following: chiropractic, physical therapy, or prescribed home exercise program ≥4 weeks; NSAIDs ≥3 weeks or NSAIDs contraindicated or not tolerated; activity modification ≥4 weeks; clinical findings and imaging, when available, lack obvious evidence for disc-related or facet joint pain; no other diagnosis is more likely; procedure performed with fluoroscopic or CT guidance; only one procedure performed per visit.

Second (confirmatory) diagnostic SIJ injection

Covered when ALL of the following are met

Confirmatory SIJ injection: Pain improved by at least 75% after the first diagnostic SIJ injection; at least two weeks have passed since the initial injection.

Subsequent therapeutic SIJ injections for recurrence

Covered when ALL of the following are met

Subsequent therapeutic injection criteria: Initial therapeutic injection(s) produced ≥50% relief and functional improvement for at least two months; the request is for SIJ injection administered for temporary relief in conjunction with other noninvasive treatments (e.g., to participate in physical therapy) and not as a stand-alone therapy; injections are given at intervals of at least two months; fewer than four therapeutic SIJ injections have been given at the same site in the last 12 months.

Policy scope and applicability

The clinical policy provides a guide to medical necessity and assists in coverage decisions.

Policy use and limitations: Coverage decisions are subject to coverage documents, exclusions, limitations, state and federal law, and Health Plan administrative policies.

Providers must consult member-specific benefit documents and applicable regulations.

Continuation of sacroiliac joint (SIJ) injections beyond 12 months is generally considered not medically necessary because effectiveness and safety have not been established. Exceptions may be considered on a case-by-case basis when more definitive therapies cannot be tolerated or provided; in such cases, documentation should justify the rationale for ongoing injections and address available alternatives.

This clinical policy is a guide to medical necessity and to assist in coverage decisions; it does not constitute a contract or guarantee of payment. When state Medicaid provisions conflict with this clinical policy, state Medicaid requirements take precedence. Medicare members should refer to applicable National Coverage Determinations (NCDs), Local Coverage Determinations (LCDs), and Medicare Coverage Articles as appropriate.

Sacroiliac nerve blocks (e.g., CPT 64451) and radiofrequency neurotomy/ablation of nerves innervating the SIJ (e.g., CPT 64625 — including conventional, cooled, and pulsed techniques) are considered not medically necessary because effectiveness has not been established.

The source document does not list additional explicit conditions under which procedures are deemed not medically necessary beyond those already stated; no further specific NMN scenarios are provided in these sections.

Coding and Pain Thresholds

CPT Code that supports coverage criteriaCPTCovered

27096

Injection procedure for sacroiliac joint, anesthetic/steroid, with image guidance (fluoroscopy or CT) including arthrography when performed

CPT codes that do not support coverage criteriaCPTNot Covered

64451	Injection(s), anesthetic agent(s) and/or steroid; nerves innervating the sacroiliac joint, with image guidance (i.e., fluoroscopy or computed tomography).
64625	Radiofrequency ablation, nerves innervating the sacroiliac joint, with image guidance (i.e., fluoroscopy or computed tomography)

HCPCS code that supports coverage criteriaHCPCSCovered

G0260

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

Referenced Coverage Guidancemixed

L39383

Local Coverage Determination: sacroiliac joint injections and procedures (CMS LCD identifier referenced)

inv-13: Pain improvement thresholds — diagnostic and therapeutic improvement percentages

Confirmatory diagnostic thresholdPain improved by at least 75% after the first diagnostic SIJ injection to qualify for a second (confirmatory) injection; at least 2 weeks must have passed since the initial injection.

Therapeutic injection relief thresholdInitial therapeutic injection(s) must have produced ≥50% relief and functional improvement for at least 2 months to support subsequent therapeutic injections.

Failure after two diagnosticsIf pain does not improve by ≥75% after the second diagnostic SIJ injection, subsequent SIJ injections are not medically necessary.

Provider Requirements and Administrative Actions

Prior Authorization

Prior Authorization Required

Prior authorization is required for sacroiliac joint (SIJ) injections. Requests must document that the member meets the medical necessity criteria (diagnostic or therapeutic indications, prior conservative therapy, pain provocation tests, imaging when available) and that the procedure will be performed with fluoroscopic or CT image guidance.

Affected codes: CPT 27096; HCPCS G0260
Only one procedure per visit; fluoroscopic or CT guidance required
Second confirmatory diagnostic injection allowed only if ≥75% pain relief and ≥2 weeks after first injection

Documentation Required

Documentation for Continuation Beyond 12 Months

Continuation of SIJ injections beyond the recommended rolling 12‑month limit (generally no more than four therapeutic injections per 12 months) may be considered on a case‑by‑case basis but requires robust documentation. Provide objective functional measures, pain scales, duration of sustained benefit, and rationale why definitive therapies are not appropriate or tolerated.

Required Conservative Therapy Before SIJ Injection

Required prior to initial SIJ injection — durations for exercise/home therapy, NSAIDs, activity modification

Required prior to initial SIJ injection

Conservative therapy prerequisites: Member has failed conservative therapy including: chiropractic, physical therapy, or a prescribed home exercise program for ≥4 weeks; nonsteroidal anti-inflammatory drugs (NSAIDs) for ≥3 weeks or NSAIDs are contraindicated or not tolerated; activity modification for ≥4 weeks.

Frequency and Interval Limits for SIJ Procedures

inv-28: Therapeutic SIJ injections — less than four therapeutic injections at same site per 12 months; at least 2 months between injections

Annual frequency limit per siteFewer than four therapeutic SIJ injections at the same site in the last 12 months (i.e., less than 4 per rolling 12 months).

Minimum interval between injectionsTherapeutic SIJ injections must be given at intervals of at least 2 months (minimum 2 months between injections).

Use contextSubsequent injections are intended to provide temporary relief in conjunction with other noninvasive treatments, not as sole therapy.

inv-29: sacroiliac joint injections and procedures — additional frequency/limits reference

Reference to additional frequency/limits guidanceRecommended treatment duration generally no more than four therapeutic SIJ injection sessions per rolling 12 months; continuation beyond 12 months reviewed case-by-case with specified documentation.

Imaging Guidance for SIJ Procedures

Billing Rule

Image guidance required — fluoroscopy or CT

Procedures must be performed with image guidance — fluoroscopy or computed tomography (CT) — as specified by the policy.

For billing and authorization, specify that the SIJ injection will be performed with fluoroscopic or CT guidance.
CPT 27096 and HCPCS G0260 reference image-guided SIJ injection procedures.

Note

Imaging references cited — no extra imaging requirements

The policy cites guideline and literature references (AHRQ, NASS, Cochrane, etc.) for procedural and imaging considerations but does not impose additional imaging requirements beyond fluoroscopy or CT in the referenced sections.

References inform clinical context but do not change the policy's stated image-guidance requirement.

Services Considered Not Medically Necessary

Sacroiliac nerve blocks (CPT 64451) and radiofrequency ablation/neurotomy of nerves innervating the SIJ (CPT 64625) are designated as not covered / not medically necessary because the evidence of effectiveness is insufficient.

Within the reviewed sections there are no additional explicit procedural exclusions listed beyond the NMN statements above.

Background on Sacroiliac Joint Pain and Interventions

The sacroiliac joint (SIJ) is an identifiable cause of chronic low back pain in approximately 15–30% of patients. Management is typically conservative; recommended initial care includes a comprehensive exercise program (about four to six weeks), local measures such as icing and mobilization or manipulation, and nonsteroidal anti-inflammatory drugs (NSAIDs). SIJ injections may be considered for diagnostic clarification or to provide therapeutic pain relief after failure of conservative measures, and adding steroid to the injected solution may prolong symptom relief when inflammation is present.

Definitions

inv-23: SIJ injection definition — injection into synovial sac for diagnostic or therapeutic purposes

DefinitionInjection into the synovial sac of the sacroiliac joint for diagnostic or therapeutic purposes, typically with local anesthetic ± steroid under image guidance.

PurposeMay provide immediate and significant pain relief and can be used diagnostically to confirm the SIJ as the pain source.

Guidance requirementProcedures must be performed with fluoroscopic or computed tomography (CT) guidance.

inv-24: Radiofrequency neurotomy/denervation definition — use of RF energy including conventional, cooled, pulsed

DefinitionUse of radiofrequency energy to disrupt pain signal transmission from sacroiliac joint innervation (radiofrequency neurotomy/denervation).

Techniques included

OpenPayer

Sacroiliac Joint Interventions for Pain Management

Coverage Criteria for Sacroiliac Joint (SIJ) Interventions

Coding and Pain Thresholds

Provider Requirements and Administrative Actions

Required Conservative Therapy Before SIJ Injection

Frequency and Interval Limits for SIJ Procedures

Imaging Guidance for SIJ Procedures

Services Considered Not Medically Necessary

Background on Sacroiliac Joint Pain and Interventions

Definitions