If your back pain has dragged on for months and a doctor has mentioned radiofrequency ablation (RFA), the next question is usually about cost. Medicare Part B does cover RFA of the nerves that carry pain from the facet joints of the spine. The catch is that coverage depends on a written Medicare policy with specific steps, and some types of RFA for back pain are not covered at all.
This guide walks through how Medicare decides, what has to happen before your procedure, how often it can be repeated, and what to ask before you schedule.
The short answer
- Facet joint RFA (medial branch RFA) is covered by Original Medicare when you meet the criteria in the local coverage policy.
- Two test blocks come first. Medicare expects two diagnostic medial branch blocks, each giving at least 80% relief of your main pain, before the first RFA.
- Repeats have limits. A repeat RFA needs at least 50% improvement lasting at least six months, and Medicare pays for no more than two RFA sessions in a rolling 12 months.
- SI joint RFA is not covered for Medicare patients in California under the current local policy.
- You still share the cost. With Original Medicare you usually pay the Part B deductible ($283 in 2026) and then 20% of the Medicare-approved amount.
Which Medicare rules apply in California?
Medicare does not have one national rule for RFA of the spine. Instead, the regional Medicare contractor writes a Local Coverage Determination (LCD). In California that contractor is Noridian, and the policy is LCD L38801, Facet Joint Interventions for Pain Management. The current version applies to services on or after April 16, 2026.
That policy covers both the diagnostic nerve blocks and the RFA procedure for facet joint pain in the neck and low back. If your doctor's office says Medicare "should cover it," this is the document they are checking your case against.
Which back pain procedures does Medicare cover?
| Procedure | Original Medicare in California | What to know |
|---|
| Thermal RFA of the lumbar medial branch nerves (facet joints) | Covered when criteria are met | Needs two positive test blocks first |
| Diagnostic medial branch blocks | Covered when criteria are met | Up to four diagnostic sessions in a rolling 12 months |
| Basivertebral nerve ablation | Covered under a separate policy (LCD L39642) | A different procedure for a specific type of low back pain seen on MRI |
| RFA of the sacroiliac (SI) joint | Not covered | Noridian's SI joint policy does not cover it |
| Pulsed RF, cryoablation, chemical or laser denervation of the facets | Not covered | Only thermal RFA at 80°C or higher qualifies |
What do you need before Medicare will pay for RFA?
Under the policy, your records need to show all of the following before the first diagnostic block:
- Pain for at least three months that is moderate to severe and mostly in the back itself, rather than running down the leg.
- A measurable effect on your daily life, recorded on a pain or disability scale.
- Conservative care that did not work, as tolerated. That often means physical therapy, home exercise, medication, or activity changes, documented in your chart.
- No untreated nerve root pain (radiculopathy) or spinal stenosis symptoms such as neurogenic claudication.
- No other problem on your exam or imaging that better explains the pain.
The procedures also have to be done with X-ray (fluoroscopy) or CT guidance. RFA done without image guidance is not covered.
If you are not sure your back pain comes from the facet joints, our page on facet syndrome explains the typical pattern, such as pain that is worse when you lean back or twist.
How the two test blocks work
Before RFA, your doctor numbs the small medial branch nerves that carry signals from the facet joints. This is a medial branch block, and Medicare treats it as a test, not a treatment.
- First block. A small amount of numbing medicine is placed near the nerves under imaging. You track your pain over the next several hours, usually on the same 0 to 10 scale used at your visit.
- Second block. If the first block gave strong relief, a second confirming block is done on a different day at the same level.
- The 80% mark. Each block needs to give at least 80% relief of your main (index) pain. If both do, the facet joints are likely the source, and RFA can be considered.
Keeping a simple pain log after each block matters. That record is part of what supports the RFA request.
How often will Medicare cover RFA?
- Levels per session: one or two spinal levels per session, on one or both sides. Three or four levels in one session is not covered.
- Sessions per year: no more than two RFA sessions in a rolling 12 months.
- Repeat RFA: the earlier RFA must have given at least 50% improvement in pain for at least six months.
How long relief lasts after RFA varies from person to person, and some patients do not reach the six-month mark. Your doctor uses your response to decide whether a repeat makes sense.
What will you pay with Original Medicare?
With Original Medicare, RFA is billed under Part B. For 2026, you pay:
- The Part B deductible, $283 for the year, if you have not met it yet.
- 20% coinsurance of the Medicare-approved amount after that.
Where the procedure is done changes the total. A hospital outpatient department adds a facility charge, while an office or ambulatory surgery center bills differently. If you have a Medigap (Medicare Supplement) plan, it may pay some or all of your 20%.
Ask about sedation in advance. The policy says routine moderate sedation or monitored anesthesia care for RFA is not considered reasonable and necessary, with limited exceptions that have to be documented. Most RFA is done with local numbing medicine.
The surest way to know your share is a benefits check before you schedule. Our guide to epidural steroid injection cost and insurance walks through the same questions for another common back procedure.
Does a Medicare Advantage plan cover RFA?
Since 2024, federal rules require Medicare Advantage plans to follow the same coverage criteria as Original Medicare, including local policies like L38801. A Medicare Advantage plan cannot simply refuse to cover RFA that meets those criteria.
What can differ:
- Prior authorization. Many Medicare Advantage plans require approval before the blocks or the RFA.
- Networks. HMO and some PPO plans limit which doctors and facilities you can use, and HMOs may need a referral.
- Your cost share. Copays and coinsurance are set by your plan, not by the Original Medicare 20% rule.
Call the number on your plan card, or ask our office to check your plan before your first visit.
Is prior authorization required?
For Original Medicare, it depends on where the procedure happens. Since July 1, 2023, facet joint procedures done in a hospital outpatient department need prior authorization. It is not required for the same procedures done in other settings. Medicare Advantage plans set their own prior authorization rules.
What if Medicare denies your RFA?
Start by finding out why. Many denials come down to missing documentation, such as a test block result that was not recorded, or conservative care that is not in the chart.
- Before the procedure, if the office expects Medicare may not pay, it should give you an Advance Beneficiary Notice (ABN) to sign. That form tells you that you may owe the bill.
- After the procedure, your Medicare Summary Notice explains the decision. You have 120 days from the date you receive it to ask for a redetermination, the first level of appeal.
- With Medicare Advantage, follow your plan's appeal process, which is listed in your plan documents.
How Integrative Sports & Spine helps Medicare patients
Integrative Sports & Spine accepts Medicare and offers radiofrequency ablation at all four clinics. Our team verifies insurance before your appointment, so you know what to expect before a procedure is scheduled.
Our board-certified physicians start with an evaluation to find where your pain is coming from. If your pain pattern points to the facet joints, the path often runs through facet joint injections or medial branch blocks first. If it points elsewhere, such as the SI joint or a pinched nerve, we will talk through other options, including SI joint injections or epidural steroid injections, and how your coverage applies to each.
Visit us in Long Beach, Alhambra, Riverside, or City of Industry.
Frequently asked questions
Does Medicare cover radiofrequency ablation for SI joint pain?
Not in California under the current Noridian policy. Medicare may still cover SI joint injections when the policy criteria are met. Ask your doctor which options fit your diagnosis.Does Medicare cover the medial branch blocks before RFA?
Yes, when the criteria are met. The policy allows up to four diagnostic sessions in a rolling 12 months, and RFA needs two blocks that each gave at least 80% relief.Does Medicare cover radiofrequency ablation for neck pain?
Yes. The same facet joint policy covers the neck and the low back, with the same test block and repeat rules.How long does relief from RFA last?
It varies. The nerves can regrow over time, and some people get longer relief than others. Medicare covers a repeat RFA only when the last one gave at least 50% improvement for at least six months.Do I need a referral to see a pain doctor with Medicare?
Original Medicare does not require a referral to see a specialist. Some Medicare Advantage plans, especially HMOs, do. Check your plan before booking.
Find out if you qualify
If you have had back pain for three months or more and other care has not helped, an evaluation is the first step. Our team will check your Medicare benefits before your visit.
Schedule a consultation online or call (833) 476-7377 to get started.
This article is general information, not a coverage guarantee. Medicare rules change, and coverage depends on your records and your plan. Sources: Noridian LCD L38801, Facet Joint Interventions for Pain Management (revision effective April 16, 2026); Noridian LCD L39462, Sacroiliac Joint Injections and Procedures; Noridian LCD L39642, basivertebral nerve ablation; CMS 2026 Medicare Parts A and B premiums and deductibles; CMS-4201-F, the 2024 Medicare Advantage final rule; CMS prior authorization for hospital outpatient facet joint interventions (effective July 1, 2023).
