Sacroiliac Joint Procedures
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Defines medical necessity, limitations, and prior authorization considerations for diagnostic and therapeutic sacroiliac joint (SIJ) injections and radiofrequency ablation (RFA) for members of CareSource Marketplace plans (Georgia, Ohio, West Virginia).
No material clinical or coverage changes in this revision.
Coverage Criteria for SIJ Procedures
Diagnostic SIJ injections (medically necessary)
Covered when ALL of the following are met
ALL of the following
- Duration: Somatic or nonradicular low back and/or lower extremity pain experienced for at least 3 months>= 3 months
- Pain severity: Severe pain (at least 6/10) and tenderness located in the SIJ region causing functional disability>= 6/10
- Provocation tests: Positive response to at least 3 SIJ pain provocation tests (eg, distraction, compression, thigh thrust, Gaenslen's, Patrick's/FABER, sacral thrust)>= 3 tests
- Failed conservative therapy: Failure of conservative therapy, as evidenced by BOTH: a) documentation of at least 6 weeks of active conservative therapy within the past 6 months OR inability to complete active conservative therapy due to contraindication, increased pain, or intolerance; AND b) documentation of at least 6 weeks of inactive conservative therapy within the past 6 monthsactive >=6 weeks AND inactive >=6 weeks
HEP defined as a 6-week program with follow-up documentation or documented inability to complete for medical reasons
- Second diagnostic injection: If a second diagnostic injection is requested, at least 1 week has passed since the initial injection>= 1 week
Therapeutic SIJ injections (medically necessary)
Covered when ALL of the following are met
ALL of the following
- Prior response: Most recent SIJ injection led to at least 75% pain relief and functional improvement>=75%
- Return of symptoms: Member experiences return of severe pain or deterioration in function
- Concurrent conservative therapy: Injection is used in conjunction with conservative therapy (active and/or inactive) as defined in policy
- Frequency: Injection repeated no more frequently than every 2 months>= 2 months between injections
- Annual limit: No more than 4 injections total (diagnostic and therapeutic) have been administered at the same site in the last 12 months<=4 per 12 months
Radiofrequency ablation (RFA) of SIJ (initial and repeat)
Initial RFA covered when ALL of the following in last 6 months are met; repeat RFA rules specified separately
ALL of the following
- Conservative therapy: Documentation meeting conservative therapy criteria (documentation of >=6 weeks active conservative therapy within past 6 months OR inability to complete active therapy due to contraindication/increased pain/intolerance; AND documentation of >=6 weeks inactive conservative therapy within past 6 months)active >=6 weeks AND inactive >=6 weeks
References policy sections I.A.4.a and I.A.4.b
- Diagnostic injection: One diagnostic injection per joint performed with reported >=75% reduction in pain after injection>=75%
The following procedures are explicitly excluded or considered not medically necessary for SIJ-mediated low back pain. Cooled radiofrequency ablation (cooled RFA) for sacroiliac joint pain is not medically necessary due to insufficient evidence of efficacy in the peer‑reviewed literature. Additionally, the use of sacroiliac joint injections to treat pain resulting from Herpes Zoster is considered not medically necessary because there is insufficient evidence demonstrating benefit. These exclusions reflect the policy’s assessment of the current evidence base and apply regardless of prior conservative therapy or diagnostic injection response.
Image guidance and any injection of contrast performed as part of a sacroiliac joint injection procedure are considered an inclusive component of the SIJ injection and may not be billed separately. Providers should not submit separate charges for fluoroscopic guidance or contrast injection in addition to the SIJ injection code for the same date and side.
The policy notes limited evidence for sustained long‑term benefit from both sacroiliac joint injections and radiofrequency ablation. Clinical literature has not demonstrated SIJ injections to be effective as a long‑term management modality, and RFA similarly lacks consistent long‑term effectiveness in controlled studies. As a result, ongoing long‑term continuation of these interventions may be subject to medical necessity review and require documentation of ongoing benefit.
Certain procedural services are identified as not medically necessary or otherwise excluded from separate reimbursement. Monitored anesthesia and conscious sedation for sacroiliac joint injections are considered not medically necessary and may be denied. As noted above, cooled RFA is not medically necessary for SIJ pain. In addition, image guidance and contrast administration are included with the SIJ injection procedure and are not separately billable. Providers should follow the policy’s billing guidance to avoid claim denials for these services.
Coding and Clinical Thresholds
Prior Authorization and Documentation Requirements
Obtain prior authorization and submit supporting documentation
Prior authorization is required per member plan for sacroiliac joint procedures. Include documentation showing failed conservative therapy, positive provocation tests, pain severity, and diagnostic injection response (when applicable) with the PA request.
- Prior authorization required per plan for SIJ procedures.
- Submit evidence of failed conservative therapy (see conservative therapy duration requirements).
- Include positive response to provocation tests and pain severity documentation; include diagnostic injection results when applicable.
Complete conservative therapy and diagnostic injection before intervention
Document and confirm completion of required conservative therapies (both active and inactive) and diagnostic injection results before performing therapeutic SIJ injections or initial RFA, except where repeat RFA criteria apply.
- Active conservative therapy ≥6 weeks and inactive conservative therapy ≥6 weeks within the prior 6 months are required.
- One diagnostic injection per joint with ≥75% pain reduction is required before initial RFA.
- Repeat RFA may waive diagnostic injection and conservative therapy if prior RFA provided ≥12 months of pain reduction within the last 36 months.
Document conservative therapy, provocation tests, pain severity, and injection response
Ensure the medical record documents the type and duration of conservative therapies, results of provocation testing, baseline pain severity (≥6/10), and response to diagnostic injections (≥75% pain relief). For members with implanted devices, include a device interrogation report with the prior authorization request.
- Document at least 6 weeks of active conservative therapy and 6 weeks of inactive conservative therapy within the past 6 months, or inability to complete active therapy with reason.
- Record positive response to at least 3 SIJ provocation tests.
- Record baseline pain severity of at least 6/10 and diagnostic injection pain relief of ≥75%.
- If the member has an implanted spinal cord stimulator or pump, submit device interrogation with the PA request.
Do not request monitored anesthesia or conscious sedation for SIJ injections
Monitored anesthesia care and conscious sedation for SIJ injections are considered not medically necessary and may be denied if billed.
- Monitored anesthesia and conscious sedation are listed as not medically necessary for SIJ injections.
- Expect denial if these services are billed for SIJ injection procedures.
Definitions
Conservative Therapy Requirement Details
Must have failed conservative therapy or documented inability to complete active therapy due to contraindication/increased pain/intolerance
Covered when the following conservative therapy documentation requirement is met
ALL of the following
- Active conservative therapy: Documentation of at least 6 weeks of active conservative therapy within the past 6 months (eg, physical therapy, occupational therapy, physician-supervised home exercise program, chiropractic care). If unable to complete active therapy, medical record must document contraindication, increased pain, or intolerance>=6 weeks within past 6 months
HEP defined as a 6-week program with follow-up documentation or documented inability to complete for medical reasons
- Inactive conservative therapy: Documentation of at least 6 weeks of inactive conservative therapy within the past 6 months (eg, rest, heat/ice, TENS, pharmacotherapy)>=6 weeks within past 6 months
Frequency and Repeat Procedure Limits
Imaging and Procedural Guidance
Fluoroscopy and image guidance are included in procedure reimbursement
Image guidance (fluoroscopy) and any contrast injection are included in the SIJ injection and RFA procedures and should not be billed separately.
- Fluoroscopic guidance is included with SIJ injections and RFA.
- Do not submit separate charges for image guidance or contrast used during the procedure.
Background and Rationale
Sacroiliac joint dysfunction is a recognized contributor to persistent low back pain, estimated to account for approximately 10–30% of chronic low back pain. Diagnostic SIJ injections play an important role in confirming the joint as the pain source: when performed with proper technique and patient selection, a diagnostic injection that produces a reported ≥ 75% reduction in pain supports the joint as the pain generator and informs candidacy for therapeutic injections or radiofrequency ablation. Because SIJ pathology can overlap with other lumbar and pelvic pain generators, diagnostic injections are used alongside clinical provocation tests and a documented course of conservative therapy to increase diagnostic certainty.
Not Covered / Exclusions
NOT COVERED: The policy lists several specific non‑covered items. Cooled radiofrequency ablation (cooled RFA) for SIJ‑mediated low back pain is not covered due to insufficient evidence. Use of sacroiliac joint injections for pain related to Herpes Zoster is considered not covered. In addition, monitored anesthesia and conscious sedation for SIJ injections are not covered and may be denied if billed. Providers should ensure prior authorization and documentation follow policy requirements and should not expect coverage for these excluded services.
Revision History
Policy effective date updated to March 1, 2026 (MEDICAL POLICY STATEMENT Marketplace = 03/01/2026).
Annual review: added pain level criteria, increased number of positive provocation tests, and updated references; approved at Committee.
Annual review: updated references and formatting; moved state-specific information to section E and approved at Committee.
Annual review: restructured conservative management and clinical criteria; added provocation tests.
Policy issued as a new policy (Date Issued: 04/13/2022).
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