Blue Cross NC Radiofrequency Ablation, Paravertebral Facet Joint Nerve(s) prior authorization requirements (2026)
What Blue Cross NC generally requires to approve Radiofrequency Ablation, Paravertebral Facet Joint Nerve(s) (CPT 64633, 64634, 64635, 64636), for Commercial plans. Yes. Blue Cross NC generally requires prior authorization for Radiofrequency Ablation, Paravertebral Facet Joint Nerve(s) (CPT 64633, 64634, 64635, 64636).
Medical-necessity criteria Blue Cross NC generally applies
Thermal Medial Branch Radiofrequency Neurotomy - "Medial branch radiofrequency neurotomy (RFN) may be offered to patients if dual diagnostic medial branch block injections (with local anesthetic only without any steroids), performed within the last 6 months, each produces at least 80% relief of the primary (index) pain and the onset and minimum duration of relief is consistent with the local anesthetic agent employed." "Radiofrequency neurotomy may be performed at the same level no more than twice annually and only if the initial radiofrequency lesion results in significant pain relief (at least 50%) and improvement in patient specific ADLs for at least 6 months." "Repeat radiofrequency neurotomy to treat recurrent facet joint pain in a patient who has failed other conservative measures may be considered medically necessary without repeating diagnostic medial branch block injections if the patient has experienced significant and prolonged relief of pain (at least 50% reduction for at least 6 months) and improvement of function in the past following radiofrequency ablation." "Radiofrequency neurotomy may not be performed at C0-C1 or at C1-C2." [NEEDS CLINICAL SPOT-CHECK]
Commonly required documentation
- Procedure notes and pain diaries for BOTH diagnostic medial branch blocks (local anesthetic only, within 6 months, each >= 80% relief with duration consistent with the agent)
- for repeat RFA, documentation of >= 50% relief for >= 6 months and functional improvement after the prior ablation.
Situations to verify before submitting
Blue Cross NC may not cover Radiofrequency Ablation, Paravertebral Facet Joint Nerve(s) in these situations. Verify against the current policy rather than assuming a denial:
- {"text":"Exclusions: \"Use of medial branch block or radiofrequency neurotomy in the setting of dynamic instability if there is moderate-to-severe spondylolisthesis; Use of medial branch block, intraarticular facet injection, or radiofrequency neurotomy at the level of a prior surgical fusion; Use of chemical neurolysis for medial branch ablation; Use of laser neurolysis ...; Use of open surgical neurolysis; Use of endoscopic neurolysis or rhizotomy; Use of cryodenervation (cryoablation) ...; Use of low-grade thermal energy (less than 80 degrees Celsius) radiofrequency denervation ...; Use of pulsed radiofrequency denervation for medial branch ablation; Any facet joint interventions performed under ultrasound guidance.\" Thoracic facet RFA excluded except C7-T1 and T12-L1.","source":"https://guidelines.carelonmedicalbenefitsmanagement.com/interventional-pain-management-2026-06-14/"}
How to submit
- Method: Prior authorization is delegated to Carelon Medical Benefits Management for spine surgery, joint surgery, interventional pain management, and small joint surgery (Commercial Fully Insured since 2023-10-01; ASO groups only if the group elected the program, effective 2025-01-01 - verify by member ID on the Carelon portal or via the number on the member ID card). Submit through the Carelon Provider Portal via Blue e (24/7, real-time against Carelon clinical guidelines) or by phone at 866-455-8414, Monday-Friday 8 a.m.-6 p.m. ET. Applies in both outpatient and inpatient admission settings. Since 2025-07-01 (Fully Insured only; excludes Medicare Advantage, DSNP, EGWP, FEP and ASO), a request for a hospital-based OUTPATIENT setting for interventional pain or joint-arthroscopy/small-joint procedures gets an additional site-of-care review.
- Portal: Carelon Provider Portal (via Blue e)
- Typical turnaround: about 3 days
Sources & verification
- BindingSource - Carelon Clinical Appropriateness Guidelines: Interventional Pain Management (Interventional Pain Management 2026-06-14) · effective 2026-06-14.View
- BindingSource - Blue Cross NC Musculoskeletal Program and Interventional Pain Management effective October 1, 2023 (Carelon delegation) (Provider news 2023-10-01) · effective 2023-10-01.View
Binding = the payer's own policy. Proxy = a public, evidence-based clinical guideline the payer mirrors. Portal-only = the binding criteria are confirmed in the administrator's portal. Always confirm against the payer for the member's specific plan. Last verified 2026-09-20.
Frequently asked questions
Does Blue Cross NC require prior authorization for Radiofrequency Ablation, Paravertebral Facet Joint Nerve(s)?
Yes. Blue Cross NC generally requires prior authorization for Radiofrequency Ablation, Paravertebral Facet Joint Nerve(s) (CPT 64633, 64634, 64635, 64636).
What does Blue Cross NC require to approve Radiofrequency Ablation, Paravertebral Facet Joint Nerve(s)?
Thermal Medial Branch Radiofrequency Neurotomy - "Medial branch radiofrequency neurotomy (RFN) may be offered to patients if dual diagnostic medial branch block injections (with local anesthetic only without any steroids), performed within the last 6 months, each produces at least 80% relief of the primary (index) pain and the onset and minimum duration of relief is consistent with the local anest… Always confirm against the current Blue Cross NC policy.
How long does a Blue Cross NC prior authorization take?
Blue Cross NC typically decides Radiofrequency Ablation, Paravertebral Facet Joint Nerve(s) requests in about 3 days. Timeframes vary; check the payer portal.
Submitting Radiofrequency Ablation, Paravertebral Facet Joint Nerve(s) to Blue Cross NC?
Praxigen checks your clinical note against these criteria before you submit and drafts a policy-cited appeal if it is denied. You review and submit; nothing is sent automatically.