Key takeaways
- Start with the spinal region and levels treated when reviewing the radiofrequency ablation CPT code for a facet procedure.
- Compare the final procedure note with the authorization, when required, and the payer’s current coverage policy before releasing the claim.
- Check the remittance on paid claims so a missing add-on line or incorrect allowed amount gets reviewed.
The radiofrequency ablation went ahead as scheduled. The authorization is in the chart. Then the remittance comes back, and only the first level paid. Your biller now has to find out whether the second level was documented, submitted, covered, and priced correctly.
For interventional pain practices, reviewing the radiofrequency ablation CPT code is one part of that investigation. This guide focuses on thermal facet joint radiofrequency ablation (RFA) and gives practice managers and billing teams a way to review the claim before it goes out and after it comes back.
01 Radiofrequency Ablation CPT Codes by Spinal Region
For thermal facet joint denervation, CMS billing guidance identifies a primary code for the first facet joint level and an add-on code for each additional facet joint level in the same spinal region. Match the region and levels to the final procedure note. Then check payer-specific requirements for laterality, units, and coverage before submission. CMS billing and coding guidance for facet joint interventions
| Spinal region | First facet joint level | Additional facet joint level in the same region |
|---|---|---|
| Cervical or thoracic | 64633 | 64634 |
| Lumbar or sacral | 64635 | 64636 |
Example for a billing review. If a lumbar thermal facet RFA note documents two distinct facet joint levels, review 64635 for the first level and 64636 for the additional level. If the note says both sides of one level were treated, verify the payer’s bilateral reporting instructions. Count treated facet joint levels separately from sides.
02 What to Check Before Submitting an RFA Claim
- Confirm the plan and applicable policy. Identify the plan and check its current coverage, documentation, and authorization requirements for the date of service. If the payer requires evidence from prior diagnostic blocks or previous procedures, locate it before releasing the claim.
- Compare the approval with the final note. When authorization applies, review the approved procedure, region, levels, side, facility, and date range against the treatment documented. Route discrepancies to the authorization team for payer follow-up.
- Review repeat procedures. Pull the date and level of the prior RFA and any documented response the payer requires. Verify the plan’s repeat-treatment criteria and frequency limits.
- Validate the claim lines. Confirm that the coder can trace each billed level to the procedure note. Check the payer’s instructions for add-on codes, bilateral reporting, and units.
03 What to Do When Only One Level Pays
Start with the submitted claim and the electronic remittance advice. Confirm whether the additional level was transmitted, accepted, and adjudicated. If the payer denied the line, record its reason and identify who owns the next step.
If the line never reached the payer, investigate the clearinghouse or claim edit. If the payer processed it, compare its reason with the documentation and policy to determine whether a correction, appeal, or other follow-up fits. If the line paid, compare the allowed amount with the contract terms for that procedure and setting. Record the expected amount, the actual amount, and the deadline for following up.
04 How AHR Reviews Pain Management Billing
Advanced Healthcare Revenue can help interventional pain practices review claim submission, denial follow-up, and payments against contracted rates. If RFA claims keep stalling, use a small sample of denied, pending, and paid claims to identify which handoff needs attention. Explore AHR’s medical billing services
The Bottom Line
Pull three recent RFA claims and trace each one from the procedure note to the remittance. If the same mismatch shows up twice, assign someone to fix it at the point where it starts and check the next batch for the same issue.