Sacroiliac Joint Procedures — SIJ injections and radiofrequency ablation (RFA)
Customize your policy alerts
Sign up for all CareSource policy alerts
Know when CareSource releases new policies or updates existing guidance.
Monitor payer policy activity
Defines medical necessity, limitations, and requirements for diagnostic and therapeutic sacroiliac joint (SIJ) injections and SIJ radiofrequency ablation (RFA) for Arkansas PASSE members; applies to providers requesting coverage and prior authorization.
Added pain level criterion requiring at least 6/10 pain and increased number of positive provocation tests for diagnostic injections.
Coverage Criteria for SIJ Injections and RFA
inv-01: Diagnostic injections
Covered when ALL of the following are met:
Up to 2 diagnostic injections considered medically necessary
inv-02: Therapeutic injections
Covered when ALL of the following are met:
inv-03: Initial radiofrequency ablation (RFA)
Covered when ALL of the following have been met in the last 6 months:
Image guidance/fluoroscopy required per policy
inv-04: Repeat radiofrequency ablation (RFA)
Covered when ANY of the following conditions are met (repeat-specific rules):
The policy considers the use of cooled radiofrequency ablation (cooled RFA) for sacroiliac joint (SIJ)-mediated low back pain to be not medically necessary due to insufficient evidence demonstrating efficacy in the peer-reviewed literature.
The use of SIJ injections for pain resulting from Herpes Zoster is considered not medically necessary because available evidence is insufficient to demonstrate efficacy.
The policy states that monitored anesthesia and conscious sedation for SIJ procedures are not medically necessary and may be denied when billed for these interventions.
Cooled radiofrequency ablation specifically for SIJ pain is listed as not medically necessary based on insufficient evidence supporting its effectiveness.
Coding and Billing Rules
Provider Actions, Documentation, and Prior Authorization
Prior Authorization Required
Prior authorization required to establish medical necessity per criteria.
Conservative-first Requirement
Conservative therapies (active and inactive) and diagnostic injections are required before therapeutic injections or radiofrequency ablation except in limited exceptions. Medical record must document failure of conservative therapy: at least 6 weeks of active conservative therapy within the past 6 months OR documented inability to complete active therapy due to contraindication, increased pain, or intolerance; and at least 6 weeks of inactive conservative therapy within the past 6 months. For initial RFA, one diagnostic injection per joint with ≥75% pain reduction is required. Repeat RFA may waive conservative therapy and diagnostic injections if prior RFA provided ≥12 months of pain relief within the last 36 months.
Clinical Documentation Requirements
Clinical documentation must include duration of somatic or nonradicular low back and/or lower extremity pain (≥3 months), pain severity (at least 6/10), tenderness in the SIJ region causing functional disability, results of at least 3 positive SIJ provocation tests (eg, distraction, compression, thigh thrust, Gaenslen's, Patrick's/FABER, sacral thrust), and details of conservative therapy (types, dates, duration, and response). For diagnostic injections, document pain relief percentage and timing; for implanted spinal cord stimulators or pumps, submit device interrogation report with prior authorization requests.
Definitions and Key Terms
Conservative Treatment Requirements Prior to Intervention
inv-22: Required prior to diagnostic injection and initial RFA
Required prior to diagnostic injection and initial RFA:
Required prior to diagnostic injections and initial RFA except as noted for repeat RFA
Frequency and Quantity Limits
Imaging and Procedural Guidance Requirements
Fluoroscopy/image guidance included (do not bill separately)
Image guidance/fluoroscopy is included in SIJ injections and RFA and should not be billed separately; fluoroscopic guidance is required for RFA.
- Image guidance and/or injection of contrast is included in sacroiliac injection procedures and may not be billed separately.
- RFA is percutaneous and performed under fluoroscopic guidance.
Clinical Background
Sacroiliac joint dysfunction is a recognized contributor to persistent low back pain and may account for approximately 10–30% of cases. First-line management emphasizes a conservative, multimodal approach that includes both active therapies (for example, physical therapy, occupational therapy, and a supervised or documented 6‑week home exercise program) and inactive measures (such as rest, ice/heat, TENS, and pharmacotherapy). Documentation of start dates, duration, and follow-up for conservative treatments is required prior to diagnostic SIJ injection and initial radiofrequency ablation. SIJ injections are primarily diagnostic with limited short-term therapeutic benefit; RFA evidence is inconsistent and selection of patients for RFA requires demonstration of response to diagnostic injection and adequate conservative therapy.
Services Not Covered
Not covered: cooled radiofrequency ablation for SIJ-mediated low back pain; SIJ injections for pain due to Herpes Zoster; and monitored anesthesia and conscious sedation for SIJ procedures are considered not medically necessary due to insufficient evidence or lack of medical necessity and therefore are not covered under this policy.
OpenPayer is powered by Trek Health's payer performance platform. Trek continuously ingests, validates, and normalizes Transparency in Coverage data alongside payer policies and other commercial payer data to create a structured payer intelligence foundation. OpenPayer uses this foundation to deliver personalized search results, dynamically generated policy pages, and tailored policy monitoring based on each user's payers, specialties, billing codes, and areas of interest. The same intelligence powers broader payer performance workflows, including reimbursement benchmarking, contract evaluation, payer negotiations, and financial decision-making.