Table of Contents
Introduction
A pain management physician performs a lumbar epidural injection under fluoroscopic guidance, dictates a clear procedure note, and the claim still gets flagged -- because fluoroscopy was billed separately on its own line, or the note doesn't clearly distinguish an interlaminar approach from a transforaminal one.
CPT 62323 is one of the more frequently billed codes in interventional pain management, and that frequency is exactly why small coding habits -- picked up from a template, a prior payer, or a different code family -- create recurring, avoidable claim problems.
This guide covers what CPT 62323 represents, how it differs from CPT 62322 and from transforaminal epidural codes, what documentation should support it, and where these claims typically run into denials or underpayments in 2026.
What Is CPT 62323?
CPT 62323 describes injection of a diagnostic or therapeutic substance -- an anesthetic, steroid, or similar solution, not including neurolytic substances -- into the interlaminar epidural or subarachnoid space in the lumbar or sacral (caudal) region, performed with imaging guidance using fluoroscopy or CT. The needle or catheter is placed between adjacent vertebral laminae, and imaging confirms placement before the substance is injected.
Two structural details matter for coding purposes. First, this is a single-day code: it covers one or more boluses delivered on the same calendar day, including a catheter placed and removed the same day. If a catheter is left in place for continuous infusion or repeated boluses across multiple days, that's a different code (62327), not 62323. Second, the imaging guidance and any contrast used to confirm placement are bundled into 62323 -- they are not separately reportable alongside it.
CPT 62323 vs. CPT 62322 vs. Transforaminal Epidural Codes
These codes are frequently confused because they all involve epidural injections in the same general region -- but the approach and the imaging component are what actually separate them.
| Coding Question | CPT 62323 | CPT 62322 | Transforaminal (64483/64484) |
|---|---|---|---|
| Anatomical region | Lumbar or sacral (caudal) | Lumbar or sacral (caudal) | Lumbar or sacral |
| Injection approach | Interlaminar epidural or subarachnoid | Interlaminar epidural or subarachnoid | Transforaminal, via the intervertebral foramen |
| Imaging guidance | Included (fluoroscopy or CT) -- required for this code | Not used -- imaging guidance is what distinguishes this from 62323 | Included (fluoroscopy or CT) -- bundled into 64483/64484 |
| Documentation focus | Confirm interlaminar approach and imaging confirmation | Confirm imaging guidance was genuinely not used | Confirm transforaminal approach and level(s) treated |
| Common coding distinction | Single-day interlaminar injection with imaging | Same procedure without imaging -- less commonly billed | 64484 is an add-on for each additional level, never billed alone |
Note: An interlaminar approach should never be coded as transforaminal, or vice versa, simply because both target the epidural space in the same general region -- the entry point and target zone are genuinely different, and payers treat miscoding between these families as a compliance concern, not a minor technicality.
Is CPT 62323 the Code You're Looking At?
CPT 62323 Documentation Check
| Documentation Element | Why It Matters |
|---|---|
| Procedure performed | The note should describe the injection itself, not just the diagnosis. |
| Anatomical region | Lumbar or sacral (caudal) should be explicitly identified. |
| Approach | Interlaminar should be clearly documented, distinct from transforaminal. |
| Imaging guidance | Fluoroscopy or CT use should be documented, including confirmation of placement. |
| Indication/medical necessity | The clinical reason for the injection should be clear and specific. |
| Substance administered | The medication or solution used should be documented. |
| Physician/professional documentation | The note should reflect the performing provider's own documentation of the service. |
| Payer-specific requirements | Authorization, frequency, or other payer rules should be checked separately. |
| Supporting diagnosis information | The diagnosis should align with the documented clinical indication. |
Why Imaging Guidance Matters for CPT 62323
Imaging guidance isn't a footnote to CPT 62323 -- it's part of what defines the code. The descriptor specifically requires fluoroscopy or CT, and that guidance, along with any contrast used to confirm needle placement, is bundled into the code rather than separately billable. That means fluoroscopy shouldn't appear as its own line item alongside 62323.
Coders shouldn't infer that imaging guidance was used simply because it's standard practice at a given clinic. The procedure note itself needs to document that imaging was performed and used to confirm placement -- if the note doesn't support it, the claim shouldn't be coded as though it did.
CPT 62323 and Medical Necessity: What Billing Teams Should Review
Procedure coding and medical necessity review are related but separate steps. Correctly identifying the approach, region, and imaging component establishes that CPT 62323 matches what was performed -- it doesn't establish that the payer will consider the service medically necessary. That depends on the documented symptoms, how the diagnosis codes support that indication, the applicable payer's medical policy, and in some cases prior conservative treatment, authorization, or frequency limitations. These requirements vary by payer and MAC, and some MACs publish specific frequency limitations for epidural injection codes as a group -- the applicable Local Coverage Determination should be checked directly rather than assumed from a different payer's policy.
CPT 62323 Modifier Review
There's no modifier that's automatically required for CPT 62323. Where modifiers become relevant, it's typically because a genuinely distinct circumstance needs to be identified -- for example, a modifier indicating a separately identifiable service performed the same day, when the documentation actually supports two distinct services rather than one procedure billed twice. Bilateral or laterality modifiers are more commonly discussed in the context of transforaminal codes, where treatment can occur at distinct levels or sides.
CPT 62323, NCCI Edits & Claim Scrubbing
Before submission, billing teams should check current CMS NCCI edits and the payer's claim-editing rules against CPT 62323 -- particularly around imaging guidance codes, which are bundled and should never appear as a separate line, and around same-day procedures that could look like duplicate services. Units billed should reflect the single-day, single-encounter nature of the code, and any additional same-day service should be clearly documented as genuinely distinct. Specific current edit pairs should be verified directly against CMS's published NCCI data rather than assumed from a prior year's claim experience.
Global Surgery & Post-Procedure Billing
Epidural injections aren't typically part of a lengthy global surgical package, but billing teams should confirm whether a given payer treats any part of the encounter -- an E/M visit the same day, for instance -- as separately reportable or bundled into the procedure. Follow-up visits and repeat injections should be evaluated against the applicable payer's frequency and medical necessity rules rather than assumed to be automatically billable on the same terms as the first encounter.
10 CPT 62323 Billing Mistakes That Can Create Avoidable Claim Problems
- Choosing the code from the diagnosis instead of the procedure actually performed
- Confusing interlaminar and transforaminal approaches
- Ignoring the imaging-guidance distinction between 62322 and 62323
- Assuming payer coverage without checking the applicable policy
- Submitting without sufficient procedure documentation
- Using modifiers without a documented reason
- Ignoring current NCCI edits
- Failing to review prior authorization requirements
- Treating every payer's policy as identical
- Sending a claim before a final documentation/coding check
CPT 62323 Claim Readiness Check
| Checklist Item | Yes | No |
|---|---|---|
| Procedure matches the CPT descriptor | ||
| Approach is documented | ||
| Imaging guidance is supported | ||
| Diagnosis supports the documented indication | ||
| Medical necessity requirements reviewed | ||
| Authorization requirements checked when applicable | ||
| Modifiers reviewed | ||
| NCCI/payer edits checked | ||
| Required documentation is complete | ||
| Claim data matches the medical record |
Note: If any box remains unchecked, review the claim before submission.
How Much Does CPT 62323 Reimburse?
There's no single reimbursement figure that applies to every CPT 62323 claim. Payment depends on whether the payer is Medicare or a commercial plan, the geographic locality, the specific payer contract, whether the service is billed in a facility or non-facility setting, place of service, modifier use, policy requirements, the allowed amount under that plan, and the individual claim's circumstances. A CPT code does not equal one universal payment amount -- practices can verify the current Medicare rate for their specific locality directly through the CMS Physician Fee Schedule lookup tool, and commercial rates should be verified against the applicable payer contract.
How to Catch CPT 62323 Problems Before the Claim Is Submitted
| Stage | What to Verify |
|---|---|
| Procedure Note | Confirm what was actually documented before coding anything. |
| Code Selection | Match the code to the approach, region, and imaging component documented. |
| Diagnosis Review | Confirm the diagnosis codes support the documented indication. |
| Documentation Check | Confirm all required elements are present and consistent. |
| Authorization Check | Confirm whether the specific payer requires prior authorization. |
| NCCI/Payer Edit Review | Check for bundling issues, especially around imaging guidance. |
| Claim Submission | Submit a complete, internally consistent claim. |
| ERA/EOB Review | Review the remittance, not just whether the claim was paid. |
| Denial/Underpayment Follow-Up | Address the specific reason -- denial or partial payment -- directly. |
The Claim Was Paid. So Why Does It Still Need Review?
A "paid" status doesn't automatically mean the claim was paid correctly. The allowed amount, the contractual adjustment, the patient responsibility, and the actual payment posted can all diverge from what was expected -- sometimes from a payer-side processing error, sometimes because a modifier or diagnosis affected the allowed amount unexpectedly. Billing teams should review remittance details on paid claims, not just denied ones, and pursue an appeal or reconsideration when the numbers don't reconcile with the applicable contract.
Find the Billing Gap
Here's a simplified, fictional example -- not a real claim or actual reimbursement figure -- used only to illustrate the concept:
| Billed | Conceptual Value A |
| Allowed | Conceptual Value B (lower than A) |
| Paid | Conceptual Value C (lower than B) |
| Adjustment | Difference between A and B |
| Patient Responsibility | Difference between B and C |
Frequently Asked Questions
Sources & Coding References:
AMA -- CPT code set -- official descriptors for CPT 62322, 62323, 62326, 62327, 64483, and 64484
CMS -- National Correct Coding Initiative (NCCI) edits and Physician Fee Schedule lookup tool
Applicable Medicare Administrative Contractor (MAC) -- Local Coverage Determinations for epidural injection procedures
Disclaimer: This article is provided for general educational and informational purposes and does not replace current CPT instructions, payer policies, Medicare guidance, or professional coding advice. Coding, coverage, and reimbursement requirements can change and vary by payer, MAC, locality, and clinical circumstance, so practices should verify current requirements applicable to the specific claim and payer. CPT is a registered trademark of the American Medical Association.