CPT Code 64484: Transforaminal epidural add-on billing guide 2026

Key takeaways

CPT Code 64484 covers a transforaminal epidural injection of anesthetic or steroid at each additional lumbar or sacral level, rather than the first.

Because 64484 is an add-on code (+), it cannot be billed without the primary code CPT 64483 on the same claim.

Imaging guidance is built into the code descriptor, so 77003 and 77012 are never billed separately with 64484.

Medicare’s 2026 national average is about $118 in the office and about $44 in a facility, before geographic adjustment.

Practice management software like Pabau helps track the 64483/64484 pairing, and it also streamlines claim submission through the Claim.MD clearinghouse.

CPT Code 64484 is the add-on code for each additional lumbar or sacral level treated with a transforaminal epidural injection. So it is payable only when CPT 64483 also appears on the same claim for the first level. Two errors then drive most denials here. One is a missing primary code. The other is imaging guidance billed on its own line, even though the descriptor already includes it.

This reference covers the official descriptor, the 64483 pairing rule, and verified 2026 Medicare rates, including the two CY2026 conversion factors. In addition, it sets out RVU components, ICD-10 pairings, documentation requirements, and the errors that trigger denials.

CPT Code 64484: official description and clinical overview

CPT Code 64484 describes: Injection(s), anesthetic agent(s) and/or steroid, transforaminal epidural, with imaging guidance; lumbar or sacral, each additional level. During the procedure, a needle passes through the intervertebral foramen. It then deposits corticosteroid, local anesthetic, or a combination into the epidural space at the targeted nerve root.

The code carries a plus (+) symbol in the AMA CPT codebook, so its add-on status is explicit in the descriptor itself. It covers any additional lumbar or sacral level treated in the same operative session, once the first level has been reported with CPT 64483.

• Anatomic site: Lumbar and sacral nerve root levels
• Agent injected: Anesthetic, corticosteroid, or combination
• Approach: Transforaminal, meaning through the neural foramen rather than interlaminar
• Imaging: Fluoroscopy or CT, included in the descriptor and therefore not billed separately
• Code type: Add-on (+); each additional level beyond the first

According to the American Medical Association’s CPT code set, add-on codes are never standalone billable services. CPT Code 64484 therefore exists to capture the incremental work of each extra spinal level treated in one session.

CPT 64483 and 64484: how the primary and add-on codes pair

CPT 64483 is the primary code covering the first lumbar or sacral transforaminal epidural level. CPT Code 64484 then picks up every additional level treated in the same session. Because the two codes are structurally linked, 64484 has no billing meaning without 64483 anchoring it on the claim.

For example, a two-level lumbar TFESI is billed as 64483 for the first level plus 64484 for the second. A three-level session is likewise 64483 plus two units of 64484, since no separate code exists for a third level. Checking the payer’s level limit before the procedure prevents a partial denial on the extra units.

Billing rules for the 64484 add-on

Several billing rules govern CPT Code 64484 specifically. If you violate any one of them, an automatic denial usually follows.

• Cannot be reported alone: CPT 64484 always requires CPT 64483 on the same claim. Otherwise the payer rejects it as an invalid add-on submission.
• No modifier 51: Add-on codes are exempt from the multiple-procedure reduction under modifier 51. Do not append modifier 51 to 64484.
• Separate report per session, not per day: If a patient has two injection sessions on one date, each session’s codes are reported separately. Do not combine levels from different sessions into one 64484 unit, even when the date of service matches.
• Units of service: Report one unit of 64484 for each additional level. Two additional levels therefore means two units of 64484 on the claim line.
• Cervical and thoracic levels excluded: CPT 64480 is the add-on code for cervical or thoracic transforaminal epidurals. CPT Code 64484, in contrast, is lumbar and sacral only.

Imaging guidance is bundled, not billed separately

Neither fluoroscopic guidance (77003) nor CT guidance (77012) is separately reportable with 64483 or 64484. That is because the 2017 CPT revision folded imaging guidance into the descriptors for 64479 through 64484. Both the work and the expense are already paid inside the injection code.

The National Correct Coding Initiative enforces this with a hard edit. Appending a modifier does not unbundle it, and no payer policy restores separate payment. Reporting 77003 alongside 64484 therefore produces a denial on the imaging line every time.

Fluoroscopy still belongs in the procedure note. The image confirmation supports the level count and the medical necessity argument, even though it never becomes its own claim line here.

Medicare reimbursement for CPT Code 64484 in 2026

Medicare pays about $118 for CPT Code 64484 in a non-facility (office) setting, while a facility setting pays about $44 in 2026. Both are national averages before geographic adjustment. They come from the CMS physician fee schedule relative value files, specifically the July 2026 release. The chart below then sets those figures against the primary code and against bundled imaging.

One detail changes the arithmetic, though most fee schedule summaries skip it. CY2026 carries two conversion factors rather than one. Qualifying alternative payment model participants are paid at $33.5675, while everyone else is paid at $33.4009. On 64484 the difference is only about 60 cents, so the figures here use the higher factor. Either way, verify your own locality in the CMS physician fee schedule lookup tool.

Facility versus non-facility rates

The differential between settings reflects who carries the overhead. In a hospital outpatient department or an ambulatory surgery center, for instance, the facility bills its own overhead through the OPPS or ASC payment system. The physician then receives only the lower professional rate. In an office-based procedure suite the physician absorbs the overhead, including the fluoroscopy, so the higher non-facility rate compensates for it.

That is why the office rate for 64484 is nearly triple the facility rate. Practice expense RVUs climb from 0.25 to 2.46 between the two settings, while the work RVU stays at 0.98.

RVU breakdown for 64483 and 64484

Medicare’s payment formula is (work RVU + practice expense RVU + malpractice RVU) x conversion factor x GPCI. The components below are the CY2026 national values from the CMS relative value file, released June 30, 2026.

Note that the global period also differs behind those numbers. CPT 64483 carries a 000-day global period, while 64484 carries ZZZ because it is an add-on that inherits the primary code’s period.

ICD-10 diagnosis codes that support a 64484 claim

The diagnosis on the claim must reflect the documented condition justifying the injection. No ICD-10 code guarantees coverage, because the clinical record is what supports medical necessity. Certain diagnoses do appear consistently with CPT Code 64484, since they match the indications for lumbar and sacral TFESI.

Select the most specific code the documentation supports. Avoid defaulting to M54.50 when radiculopathy or a structural diagnosis is present in the record. Payers scrutinize non-specific low back pain particularly closely on multi-level injection claims. ICD-10-CM updates every October, so confirm code validity before the billing cycle turns over.

Documentation requirements for 64484

Thin documentation is the second most common denial trigger for CPT Code 64484, though the missing primary code still leads. Medicare also requires prior conservative treatment under its Local Coverage Determinations, and the specifics vary by MAC jurisdiction. Read your MAC’s active LCD for lumbar injections before the injection date, not after the denial.

• Prior conservative treatment: Most Medicare LCDs want at least six weeks of physical therapy, oral medication, or chiropractic care. Some specify four to six weeks, so confirm with your MAC.
• Diagnostic imaging: An MRI or CT confirming structural pathology at the levels to be injected, such as disc herniation, spinal stenosis, or foraminal narrowing.
• Clinical examination: Physical exam findings consistent with either radiculopathy or neurogenic claudication at the documented spinal levels.
• Procedure note: The specific levels injected, the agent used, the transforaminal approach, imaging confirmation, patient tolerance, and post-procedure monitoring. A generic template without level-specific data will not satisfy a payer.
• Informed consent: Documented before the procedure and specific to transforaminal risks, including nerve injury, infection, hematoma, and post-dural puncture headache.
• Fluoroscopy or CT confirmation: The note should reference real-time confirmation of needle placement at each level. That supports the unit count, even though the imaging is not billed separately.

Capture the level count and the place of service while the procedure note is being written. Retrofitting that detail once the claim has gone out is slow, and it creates a compliance risk.

Common billing errors that trigger 64484 denials

Pain management billing teams generally meet a predictable set of denial patterns on this code. Recognizing them in advance is far cheaper than working the appeals.

• 64484 billed without 64483: Easily the most common trigger, because the clearinghouse or payer rejects an add-on that lacks its required primary. Confirm 64483 is on the claim before submission.
• Incorrect number of units: Billing one unit of 64484 for a three-level procedure, when it should be two. The operative note has to document each level, since that is what supports the unit count.
• Using 64484 for cervical or thoracic injections: CPT 64480 covers those additional levels instead. Using 64484 for a thoracic level produces a code-to-diagnosis mismatch denial.
• Reporting 77003 or 77012 alongside 64484: Imaging guidance is already bundled into these codes. As a result, billing it on its own line triggers an NCCI denial that no modifier will override.
• Non-specific diagnosis on a multi-level claim: If two units of 64484 are supported only by M54.50, a medical necessity flag follows. Document the radiculopathy levels and reflect them in the diagnosis codes.
• Missing conservative treatment history: Unless conservative care is documented, a Medicare claim for lumbar TFESI is a predictable LCD denial. Pre-authorization workflows catch this before the appointment.

To begin with, review the denial codes that show up on spinal injection remittances, then build a pre-submission checklist for the 64483/64484 pair. A structured review before claims leave the office catches unit-count and pairing errors while they are still free to fix.

Related CPT codes in the spinal injection family

CPT Code 64484 belongs to a family organized by both approach and anatomic site. Transforaminal sits against interlaminar, while cervical or thoracic sits against lumbar or sacral. As a result, picking the wrong member of that family is a common source of denials and audits.

The transforaminal approach targets one nerve root through the foramen. By comparison, the interlaminar approach delivers medication through the posterior midline or paramedian space, across a broader epidural distribution. They are not interchangeable on the claim even at the same level, because they describe different procedures. For a single-level lumbar interlaminar injection, bill 62323 instead.

How Pabau supports pain management billing

Add-on billing has one recurring failure point. The primary code has to travel with the add-on on the same claim, and the unit count has to match the operative note. When someone checks that by eye at the end of a busy day, it gets missed.

Pabau’s claims management software keeps both the procedure record and the outgoing claim in one system. Billing staff can then see the levels documented on the note next to the codes on the claim. That lets them check the 64483/64484 pairing against the record rather than from memory.

In addition, Pabau submits and tracks claims for US practices through the Claim.MD clearinghouse. That covers CMS-1500 and 837P formats, eligibility checks before the appointment, and electronic remittance advice coming back in. Remittance data is what tells you whether your 64484 denials are pairing errors or documentation errors.

Bill multi-level injections without the rework

Pabau keeps both the procedure note and the claim in one record, and submits through Claim.MD. Your billing team can check the 64483/64484 pairing before the claim goes out.

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Conclusion

In short, 64484 denials trace back to a handful of causes. Either the primary code is missing, the unit count contradicts the note, the wrong anatomic family was used, or the necessity documentation is thin. Each one is cheaper to catch before submission than to appeal afterward.

Above all, the imaging correction is the one worth acting on this week. If your charge master still carries 77003 as a separate line against these injections, you are generating denials on purpose. Pull it out, then reset the revenue expectation for a two-level office session to roughly $384.

Book a demo to see how Pabau keeps the level count, the codes, and the claim in one record for pain management practices.

Continue your research

Need to understand how a clearinghouse scrubs a claim before submission? Medical claims clearinghouse overview explains the EDI submission pathway from practice to payer, including where scrubbing happens.

Dealing with repeated 64484 denials? Denial management in healthcare sets out how to work a denial queue by root cause rather than by age.

Want a clean claim checklist for spinal injection codes? Submitting a clean claim outlines the field-level requirements that reduce first-pass denials before they reach a payer.

Unsure where add-on errors enter the cycle? Revenue cycle management fundamentals covers the workflow stages where coding errors typically start.

Worried about LCD documentation on injection claims? Medical billing compliance covers the record-keeping that survives a payer audit, particularly on injection claims.

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