Radiofrequency ablation for back and neck pain in the US: Medicare, insurance and cost

What Medicare requires

• Chronic, mainly spinal neck or back pain for at least 3 months that limits function, with failed conservative care.
• Two diagnostic medial branch blocks at the same level, each giving at least 80% relief of your main pain.
• Thermal radiofrequency only, with fluoroscopy or CT guidance, at 1 or 2 levels per session.
• Repeat ablation: the last one must have given at least 50% relief for at least 6 months (or 50% better function). The limit is 2 sessions per region in a rolling 12 months.

Not covered: chemical, laser, cryo or other non-thermal ablation, 3 or more levels in one session, and routine general anesthesia or deep sedation. Moderate sedation may be covered case by case.

Hospital prior authorization

Original Medicare has required prior authorization for radiofrequency ablation (CPT 64633 to 64636) in hospital outpatient departments since July 1, 2023. It does not apply in doctors’ offices or surgery centers.

What it costs with Medicare

In 2026, Medicare’s national approved amount for lumbar radiofrequency ablation of one joint (CPT 64635), including the doctor’s fee, ranges from about $460 to $2,200, depending on where it is done: usually lowest in a doctor’s office, higher in an ambulatory surgery center and highest in a hospital outpatient department. Your 20% share is about $95 to $430.

These are national figures from CMS’s 2026 payment files, not a quote. Actual amounts vary by location, extra levels add to the cost, and you pay the Part B deductible first. A Medicare Supplement (Medigap) policy or other secondary coverage may pay your 20%. Medicare Advantage plans set their own copays.

Private insurance

• Aetna requires at least 6 months of pain, 6 weeks of conservative care and two blocks with at least 80% relief. A repeat needs more than 50% relief for at least 12 weeks, at least 6 months apart and no more than twice a year. It considers cooled radiofrequency experimental.
• UnitedHealthcare considers pulsed, cooled, cryo, chemical and laser ablation of the facet nerves unproven.
• Expect prior authorization with most private plans and Medicare Advantage plans.

Self-pay prices

Published self-pay prices we found from US providers ranged from about $750 to $4,500, with the highest prices including the surgery center and anesthesia. What a price includes varies a lot: some cover only the doctor’s fee, while others include the facility, imaging guidance, sedation and medicine. Prices change, so ask the provider for a written Good Faith Estimate.

How Medicare decides

Original Medicare covers these procedures under Part B when they are medically necessary. For most pain procedures there is no national rule. Instead, the regional company that processes Medicare claims in your state (a Medicare Administrative Contractor, or MAC) publishes a local coverage determination (LCD). The LCDs for each procedure are nearly identical across the country. In Illinois, Minnesota, Wisconsin, New York and New England, the contractor is Wellpoint Federal, formerly National Government Services.

Medicare Advantage plans must follow the same national and local coverage rules, but they can require prior authorization. Since January 2026, they must decide standard prior authorization requests within 7 calendar days and urgent ones within 72 hours. How coverage works in the US.

If you’re uninsured or paying yourself

Under the No Surprises Act, if you don’t have insurance or choose not to use it, you have the right to a written Good Faith Estimate when you schedule a service at least 3 business days ahead, or whenever you ask. If your final bill from a provider is at least $400 more than its estimate, you can dispute it with the federal patient-provider dispute process within 120 days of the bill date. There is a small fee.

Ask whether a cash price includes the doctor, the facility, imaging guidance, sedation and the medicine itself, because published prices differ in what they cover.

Paying with an HSA or deducting it

Medical procedures and physical therapy that treat a medical condition are generally qualified medical expenses for a health savings account (HSA) or flexible spending account (FSA). In 2026 you can put up to $4,400 (self-only) or $8,750 (family) into an HSA if you have a qualifying high-deductible plan. If you itemize, unreimbursed medical expenses above 7.5% of your adjusted gross income can be deducted.

If you are denied

• Private plans: ask for the denial and the policy it relies on in writing. You have 180 days from the denial notice to file an internal appeal; in urgent cases the plan must decide within 72 hours. If the plan still says no, you can ask for an independent external review within 4 months, and the insurer must accept the reviewer’s decision.
• Original Medicare: you have 120 days from the date on your Medicare Summary Notice to ask for a redetermination.
• Medicare Advantage: ask your plan for a reconsideration within 65 days of the denial notice.
• Your doctor’s office can often help with a peer-to-peer review or a letter of medical necessity. Your state insurance department can also help with complaints about private plans.

Frequently asked questions

Does Medicare cover radiofrequency ablation?

Yes, for facet joint pain after two diagnostic blocks that each gave at least 80% relief. It covers up to 2 sessions per spine region in 12 months.

How often can you have radiofrequency ablation?

Under Medicare, up to 2 sessions per spine region in a rolling 12 months, and a repeat only if the last one gave at least 50% relief for 6 months or more.

Does Medicare cover radiofrequency ablation for the SI joint or knee?

Medicare’s sacroiliac joint LCDs say SI joint ablation is not reasonable and necessary. For knee arthritis, new Medicare LCDs covering genicular nerve ablation take effect in late October and November 2026; see knee and hip injections in the US.

This page explains how coverage usually works in the United States, using the public Medicare, insurer, government and provider sources listed above. It is general information, not medical, insurance, financial or legal advice, and it does not recommend any treatment, plan or provider. Coverage depends on your plan, your diagnosis and where you live, and rules and prices change, so confirm with your doctor, your plan or Medicare, and the provider before you decide. Protocol Archive is independent and is not affiliated with Medicare, CMS or any insurer.