UnitedHealthcare Ablative Spinal Pain Coverage Update

Coverage Criteria and Policy Position

Coverage position summary:

ALL of the following

Patient has chronic axial spinal pain (cervical, thoracic, or lumbar) or sacroiliac joint pain documented by clinical assessment and consistent with targeted anatomy for the planned procedure.
Anatomic source of pain is suspected to be facet-mediated, sacroiliac-mediated, or vertebrogenic based on history and physical exam.
Diagnostic block prerequisite
- For lumbar or cervical medial branch (facet) RFA: At least one diagnostic medial branch block or controlled comparative medial branch blocks demonstrating >=50% pain relief after the block and concordant improvement in function and/or pain-related activity prior to proceeding to RFA.
  ASRA and NICE recommend a positive diagnostic block before RFA.
- For sacroiliac joint (SIJ) RFA/CRFA: Positive response to diagnostic SIJ block(s), typically dual blocks, demonstrating >=50% pain relief and concordant functional improvement prior to proceeding to CRFA or lateral branch RFA.
  NASS suggests SIJ CRFA may be considered following dual diagnostic blocks.
- For basivertebral nerve (BVN) intraosseous RFA (Intracept): Trial eligibility and diagnostic criteria must match the populations studied in clinical trials (e.g., chronic vertebrogenic low back pain with Modic type 1 or 2 changes and symptoms refractory to conservative care).
  Use outside studied populations is not supported by available evidence.
Documentation of prior conservative therapy and response: conservative management (e.g., physical therapy, NSAIDs/analgesic optimization, activity modification) of adequate duration has been tried and documented unless contraindicated; duration and specific therapies should be consistent with current guideline recommendations and trial protocols.
Clinical documentation must include baseline pain scores (e.g., VAS or NRS), functional status (e.g., ODI), prior treatments and response, and precise procedural plan including target nerves/levels and laterality.
Frequency limits: Repeat RFA procedures for the same region are generally allowed only when the patient had a clinically meaningful response (typically >=50% pain relief and functional improvement) and at intervals consistent with guideline recommendations (commonly no more than two procedures per region per year and typically at least 6 months between procedures).
ASIPP/ASRA recommend intervals of approximately 6 months for repeat medial branch neurotomy if benefit was achieved.
Prior authorization: Procedures described in this section generally require prior authorization per payer policy; submit required documentation (see Suggested supporting documentation).
FDA device clearance is informational and not sufficient for coverage decisions; RFA is a procedure and not regulated by the FDA.

Prior Authorization

Provider Action: Prior authorization and frequency considerations

Prior authorization is recommended for all neuroablative procedures described in this policy. Prior authorization will require submission of the required supporting documentation listed below and may include review of imaging, diagnostic block results, and prior treatment records.

Submit documentation of positive diagnostic block results (including percent pain relief and timing relative to the block).
Indicate prior conservative therapies tried and duration.
Specify target levels/nerves and laterality.
If repeat RFA is requested, include documentation of prior RFA procedure, degree and duration of benefit, and time since last procedure.

Denial Risk

Provider Action: Denial risk for unproven ablative techniques

Procedures and technologies listed below have insufficient high-quality evidence and are considered unproven and not medically necessary for spinal pain when used as described.

Pulsed radiofrequency ablation of facet nerves, sacral nerve root, or dorsal root ganglion.
Endoscopic radiofrequency ablation / endoscopic rhizotomy.
Cryoablation (cryodenervation, cryoneurolysis).
Cooled radiofrequency ablation (CRFA) for facet or sacroiliac pain when not meeting trial-derived diagnostic criteria or when evidence is inadequate for the indication.
Chemical ablation (alcohol, phenol, sodium morrhuate).
Laser ablation (pulsed, continuous, low-level).
Intraosseous RFA of the basivertebral nerve (Intracept) when used outside populations and protocols studied in high-quality trials or when trial eligibility criteria are not met.
Ablation for sacroiliac joint pain when diagnostic and frequency criteria are not met.

Documentation Required

Provider Action: Evidence limitations that may prompt denial or enhanced review

Evidence limitations that may prompt denial, request for additional information, or enhanced clinical review include study design concerns, short follow-up, small sample size, high crossover rates, industry sponsorship, and inconsistent comparator groups.

BVNA/Intracept evidence includes industry sponsorship, sham crossover and high crossover rates, and limited long-term safety data in randomized comparisons.
CRFA evidence is limited by small sample sizes, heterogeneous techniques, short-term follow-up, and lack of large, well-controlled RCTs demonstrating durable benefit beyond 6-12 months.
Case series and retrospective cohort studies without control groups provide low-quality evidence and may be insufficient to justify coverage absent stronger data.

Documentation Required

Provider Action: Suggested supporting documentation

Suggested clinical documentation to support medical necessity and prior authorization requests: include all items below.

History and physical exam documenting suspected pain generator and concordant symptoms.
Baseline and recent pain scores (VAS/NRS) and functional measures (ODI, Roland-Morris, or equivalent).
Results of diagnostic block(s) with percent pain relief, timing, and any functional improvement documented.
Detailed conservative therapy history with duration and response (physical therapy, medications, injections, cognitive-behavioral or multidisciplinary care).
Relevant imaging reports (e.g., MRI showing Modic changes for BVN procedures) when applicable.
Operative/procedure notes for prior interventions, including prior RFA, with dates and outcomes.
Planned procedure note describing target nerves/levels, laterality, and device/technique to be used.
For repeat procedures, documentation of previous procedural benefit (percent relief and duration) and reason for repeat treatment.

Documentation Required

Provider Action: Clinical documentation to justify RFA

Clinical documentation to justify RFA should demonstrate: clear diagnostic pathway, documented positive response to diagnostic block(s) where indicated, failed adequate conservative care, and objective baseline and follow-up measures of pain and function.

Specify the suspected pain generator and corresponding diagnostic block result (percent relief and duration).
Document conservative therapy attempted and reason for insufficiency.
Provide baseline outcome measures (e.g., VAS/NRS, ODI) and plan for post-procedure follow-up assessment.
If BVN/Intracept is requested, document Modic type 1 or 2 changes on MRI and match inclusion criteria from pivotal trials.

Step Therapy

Provider Action: Conservative therapy before procedural escalation

Conservative therapy should be attempted and documented prior to procedural escalation unless contraindicated or unless the clinical scenario matches trial protocols that allowed earlier intervention.

Documented trial of conservative management such as structured physical therapy, activity modification, and appropriate pharmacotherapy (e.g., NSAIDs, acetaminophen, short-term opioids when appropriate).
Evidence of prior targeted nonablative interventions (e.g., therapeutic lumbar injections) where appropriate and their effect.
Duration and content of conservative care should reflect guideline recommendations and the approaches used in clinical trials for the requested procedure.

Note

Provider Action: Stepwise care context from trials

Many clinical trials of RFA and BVN procedures enroll patients after stepwise care including conservative management and diagnostic blocks. Trial protocols often required specific prior therapies and positive diagnostic block responses before enrolment; coverage requests should reflect similar stepwise care context.

Trials of medial branch RFA typically required prior conservative therapies and a positive diagnostic medial branch block.
BVN (Intracept) trials enrolled patients with chronic vertebrogenic LBP with Modic changes who had failed conservative management and met specific inclusion criteria.
CRFA and other modalities studied often used diagnostic blocks and predefined conservative care requirements prior to randomization.

Billing Rule

Provider Action: Coding and documentation guidance

Coding and documentation guidance: submit appropriate CPT/HCPCS codes with modifier usage as needed and include clinical notes, diagnostic block results, prior authorization approval number, operative reports, and imaging when applicable. The absence of required documentation may delay or result in denial of coverage.

Include CPT codes describing the ablation procedure and any associated guided imaging or monitoring codes.
Use appropriate modifiers for laterality and repeat procedures as required by billing rules.
Attach diagnostic block procedure report(s) and percent pain relief documentation to the prior authorization and claims submission.
Include prior authorization reference number on the claim.

Step Therapy

Provider Action: Conservative care before RFA

Conservative care before RFA is required except in cases matching trial inclusion that permitted earlier intervention; documentation should show duration, content, and response to conservative management.

Document at least a trial of conservative care tailored to the diagnosis and consistent with guideline timelines.
If conservative care was not feasible or contraindicated, provide clear justification in the medical record.
For BVN procedures, ensure conservative care and imaging findings match trial eligibility when applicable.

Conservative Care and Trial Requirements

Documentation of prior conservative therapy is expected for selection similar to trial populations (typically ≥6 months of chronic symptoms)

Documentation of prior conservative therapy is expected for selection similar to trial populations

Conservative therapy documented: Documentation should show prior conservative care (for example: pharmacotherapy, physical therapy, spinal injections, activity modification) consistent with populations in BVNA and CRFA trials; many BVNA participants had chronic symptoms for ≥6 months before enrollment.typically >=6 months of chronic symptoms as in trials

Pooled trial reports and individual studies required prior conservative management for many participants.

Conservative care trial recommended before considering RFA per NICE and other guidelines

Conservative care prerequisite:

Procedure and Billing Codes

Referenced procedure codes and unlisted codesCPT

22899	Unlisted procedure, spine [when used to report the Intracept procedure or cooled radiofrequency ablation]
27299	Unlisted procedure, pelvis or hip joint
64625	Radiofrequency ablation, nerves innervating the sacroiliac joint, with image guidance (i.e., fluoroscopy or computed tomography)
64628	Thermal destruction of intraosseous basivertebral nerve, including all imaging guidance; first 2 vertebral bodies, lumbar or sacral
64629	Thermal destruction of intraosseous basivertebral nerve, including all imaging guidance; each additional vertebral body, lumbar or sacral (List separately in addition to code for primary procedure)
64999	Unlisted procedure, nervous system

Provider Actions, Authorization and Documentation

Note

Use listed procedure codes for authorization requests (codes are for reference only)

Procedure and unlisted codes are provided for reference only; listing a code does not imply coverage. Use the listed codes when requesting prior authorization and ensure clinical justification aligns with the coverage rationale.

Listed codes include 22899, 27299, 64625, 64628, 64629, 64999 and note that inclusion is for reference only
Coding clarification: CPT 64999 may be used for pulsed radiofrequency ablation

Prior Authorization

Prior authorization should address frequency limits (suggested ≥6 months between procedures)

Prior authorization should confirm adherence to frequency limits and may require documentation that repeat procedures meet suggested intervals (generally ≥6 months between procedures per region) and that conservative therapy prerequisites have been met.

ASIPP suggests a 6-month or longer interval between medial branch neurotomy procedures per region (maximum ~2 times/year if ≥50% relief for 5–6 months) [[chunk 37]]
ASRA recommends repeating RFA no more than twice per year and typically at intervals of at least 6 months [[chunk 38]]

Imaging and Procedural Guidance Requirements

Documentation Required

Image guidance expected for sacroiliac and basivertebral procedures

Image guidance (fluoroscopy or CT) is expected for procedures such as sacroiliac joint ablation and intraosseous basivertebral nerve ablation; CPT code descriptions for certain codes include imaging guidance.

CRFA SIJ procedures in trials used diagnostic SIJ injections and prognostic blocks with image-guided ablation techniques described in study methods [[chunk 13]]
CPT descriptions note image guidance for codes such as 64625 (SIJ) and 64628/64629 (intraosseous BVN) [[chunk 4]]

Documentation Required

BVNA requires MRI evidence of Modic type 1 or 2 changes (trial inclusion criterion)

For BVNA, MRI showing Modic type 1 or 2 vertebral endplate changes (commonly L3–S1) was required in trial populations and should be provided when proposing BVNA.

SMART trial and pooled analyses included only participants with Modic type 1 or 2 changes of the treated vertebral bodies [[chunk 36]]
Pooled BVNA studies specified Modic changes (type 1 and/or 2 from L3 to S1) as inclusion criteria [[chunk 26]]

Procedure Frequency and Repeat Treatment Guidance

Medial branch neurotomy / facet joint RFA — interval

Recommended minimum intervalNo sooner than 6 months between medial branch neurotomy / facet joint RFA procedures per treated region

Condition for repeatRepeat procedure considered when prior RFA provided clinical benefit (typically ≥50% pain relief lasting ~5–6 months)

Multiple regionsWhen treating multiple regions, therapeutic frequency should remain at intervals of at least 6 months per region; consider treating all regions at the same time if safe

Medial branch RFA — repeat procedure frequency

Maximum frequencyNo more than two RFA procedures per region per year

Typical intervalProcedures typically spaced at least 6 months apart based on duration of benefit

Definitions and Procedure Descriptions

Cooled Radiofrequency Ablation (CRFA) — definition

DefinitionApplication of continuous high-frequency electrical current to ablate nerve tissue using water-cooled electrodes/probes

PurposeCreates larger lesion zones compared with conventional thermal RFA to denervate pain-generating branches (e.g., lateral branch or SIJ targets)

Device characteristicUses water-cooled probes/electrodes to control probe temperature and expand lesion size

Pulsed Radiofrequency Ablation — definition

DefinitionTechnique that delivers intermittent, short bursts of radiofrequency energy (pulsed) allowing tissue to cool between bursts; probe temperatures typically 42–45°C

MechanismDelivers noncontinuous energy intended to modulate rather than thermally ablate nerve tissue

Background and Rationale

Ablative procedures are intended to destroy or modulate pain-transmitting neural tissue to reduce spinal pain. Common techniques described include continuous thermal radiofrequency ablation (conventional RFA), which creates thermal lesions, pulsed RFA that delivers intermittent low-temperature bursts, cooled RFA (CRFA) utilizing water-cooled probes to create larger lesion zones, cryoablation which uses extreme cold to produce neural disruption, and nonthermal approaches such as chemical ablation and laser ablation. The policy emphasizes that the evidence base varies substantially by technique and indication, with many newer or alternative methods lacking robust randomized, long-term outcome data.

Specific Procedures Not Covered

The policy’s NOT COVERED list explicitly names specific procedures and approaches that are not supported for coverage based on current evidence. These include pulsed RFA of facet nerves, sacral root, or dorsal root ganglion; endoscopic RFA/endoscopic rhizotomy; cryoablation; cooled RFA; chemical ablation (e.g., alcohol, phenol); laser ablation; sacroiliac joint ablation; and intraosseous basivertebral nerve ablation (Intracept). Inclusion on this list indicates the procedures are considered investigational or not medically necessary at this time.

OpenPayer

Ablative Treatment for Spinal Pain (for New Jersey Only)

Coverage Criteria and Policy Position

Conservative Care and Trial Requirements

Procedure and Billing Codes

Provider Actions, Authorization and Documentation

Imaging and Procedural Guidance Requirements

Procedure Frequency and Repeat Treatment Guidance

Definitions and Procedure Descriptions

Background and Rationale

Specific Procedures Not Covered