Facet, Medial Branch, and Fluoroscopy: What 2026 Bundles and What It Does Not
If you bill paravertebral facet and medial branch injections, the single biggest denial driver is guidance you already got paid for. Here is the clean line.
The stack, visualized
One code. Three layers. You bill the base only.
The 2026 descriptor already fuses the injection, the imaging guidance, and the contrast localization into a single unit of service. Picture it as a stack where only the bottom card leaves the building on the claim.
Report the base injection code and stop. Appending 77003 or 77012 for the same session is the classic unbundling denial, and it flags the whole claim for review.
The line that matters
What is baked in, and what still pays
Same session, two very different lists. The left side is money you already captured inside the injection code. The right side is where documentation legitimately unlocks additional units.
Bundled into the injection
77003fluoroscopic guidance for the same facet or medial branch injection77012CT guidance for the same injection- Contrast injection and its supervision and interpretation for needle localization
- Ultrasound guidance is not valid with the
64490family. Ultrasound-guided facet work has its own Category III codes, so you do not stack it on top
What still unlocks more
- Each additional spinal level through the add-on codes
64491644926449464495 - Additional facet joints treated by neurolysis with
64634and64636 - The contralateral side at a level, reported per your payer's bilateral rule with modifier
50or LT and RT, subject to the MUE cap - A separately identifiable evaluation and management service the same day with modifier
25, when the record supports it
The 2026 code families
Three families, one guidance rule
Injection, neurolysis, and the ultrasound alternative. Notice the pattern: whenever fluoroscopy or CT is named in the descriptor, guidance is included and never separate.
Frequency, not just coding
The LCD caps you have to respect
Correct guidance handling gets the claim clean. The Medicare facet joint LCD decides how often it pays. The structure below mirrors LCD L38773, Facet Joint Interventions for Pain Management, and its companion Billing and Coding article. Confirm the exact counts in your own MAC's current article, since the numbers are the part payers update.
Why the denial fires
The NCCI edit in one path
The National Correct Coding Initiative pairs the guidance codes against the injection codes as a procedure-to-procedure edit. Here is what happens when a fluoroscopy line rides along.
The fix is not a modifier. The fix is not billing the guidance line at all. A modifier that forces a bundled code through is a false claim exposure, not a coding shortcut.
Before the claim goes out
Three checks that stop the rework
Run these on every facet and medial branch encounter and you close the gap between what was done and what actually pays.
Strip the guidance line
If the modality was fluoroscopy or CT, no 77003 or 77012 belongs on the claim. If it was ultrasound, you are in the 0213T to 0218T set instead.
Count the levels, then the side
Map documented levels to the primary plus add-on codes, then apply the bilateral rule only where the payer and the MUE allow the second side.
Test against the LCD clock
Confirm the diagnostic-then-therapeutic sequence, the per-session level cap, and the relief threshold before repeat neurolysis against your MAC's current article.
Your fluoroscopy denials are a workflow problem, not a coding mystery
ASP-RCM Solutions runs pain management billing where these rules live inside the scrubber, not in a coder's memory. Guidance bundling, level-and-laterality logic, and the facet LCD frequency clock are checked before the claim leaves, so the second-side and second-level units you earned actually land, and the unbundled lines never fire a review.
Talk to our pain management billing teamReferences cited: CPT 2026 code set, paravertebral facet joint and medial branch injection codes 64490–64495 and facet nerve neurolysis codes 64633–64636, including the image-guidance language in the descriptors and the ultrasound-guided Category III codes 0213T–0218T · CMS National Correct Coding Initiative (NCCI) Policy Manual and procedure-to-procedure edits pairing imaging guidance (77003, 77012) with the facet injection and neurolysis codes · CMS Medicare Physician Fee Schedule Final Rule for 2026 · Medicare Local Coverage Determination L38773, Facet Joint Interventions for Pain Management, and the associated Billing and Coding article. Frequency figures shown reflect the LCD structure and should be verified against your Medicare Administrative Contractor's current article. This page is educational and not a substitute for payer-specific policy verification.
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