62323

Injection(s), of diagnostic or therapeutic substance(s) (eg, anesthetic, antispasmodic, opioid, steroid, other therapeutic agent) including prior evaluation, lumbar or sacral epidural, with imaging guidance (ie, fluoroscopy or CT); interlaminar, with catheter placement

CPT code 62323 describes the therapeutic or diagnostic injection of substances (e.g., local anesthetics, steroids, opioids) into the lumbar or sacral epidural space using an interlaminar approach. A distinguishing feature of this code is the placement of an epidural catheter for potential continuous infusion or repeat intermittent injections. The procedure explicitly requires imaging guidance, such as fluoroscopy or CT, to ensure accurate and safe needle and catheter placement. This code includes the prior evaluation necessary to determine the appropriateness of the procedure and the imaging guidance. It is typically performed for conditions causing radicular pain in the lower back and legs.

Clinical Indications

  • Lumbar or lumbosacral radiculopathy (sciatica) due to disc herniation, spinal stenosis, or other compressive etiologies.
  • Persistent or intractable low back pain with a radicular component, unresponsive to conservative management.
  • Lumbar spinal stenosis with neurogenic claudication or radicular symptoms.
  • Post-laminectomy syndrome (failed back surgery syndrome) with persistent radicular or axial pain.
  • Degenerative disc disease with associated radicular symptoms.
  • Diagnosis and management of chronic neuropathic pain syndromes affecting the lumbar or sacral nerve roots.

Procedure Steps

  1. Patient positioning (typically prone) and sterile preparation of the lumbar or sacral skin.
  2. Administration of local anesthetic to the skin and subcutaneous tissue at the anticipated needle entry site.
  3. Real-time imaging guidance (fluoroscopy or CT) used to visualize anatomical landmarks and guide needle insertion into the appropriate interlaminar epidural space.
  4. Insertion of an epidural needle (e.g., Tuohy needle) into the epidural space using a loss-of-resistance technique or direct visualization with imaging guidance.
  5. Confirmation of epidural needle tip placement (e.g., loss of resistance to saline/air, negative aspiration for CSF/blood, epidurogram with contrast medium under fluoroscopy).
  6. Advancement of an epidural catheter through the needle into the desired segment of the epidural space.
  7. Verification of catheter tip position within the epidural space using fluoroscopy after injecting a small amount of contrast material.
  8. Injection of diagnostic (e.g., local anesthetic) or therapeutic substances (e.g., corticosteroid, local anesthetic, opioid) through the catheter.
  9. Securement of the catheter to the patient's back using sterile dressing and tape, often with a filter or cap for future access, or tunneling for continuous infusion.
  10. Post-procedure monitoring for complications and assessment of pain relief.

Coding Guidelines

  • CPT code 62323 specifically includes the use of imaging guidance (fluoroscopy or CT). Therefore, imaging guidance codes (e.g., 77003) should NOT be reported separately.
  • This code is for an interlaminar approach to the lumbar or sacral epidural space and includes catheter placement. If no catheter is placed, or if a transforaminal approach is used, a different CPT code should be reported.
  • Code 62323 includes the 'prior evaluation' by the performing physician on the same day as the procedure. A separate E/M service may only be reported if a significant, separately identifiable service is performed and documented (modifier 25 may be appropriate).
  • Report 62323 once per patient encounter, regardless of the number of levels injected with a single catheter placement. The placement of a single catheter allows for administration of substances at multiple levels if desired.
  • For continuous epidural infusions or daily management of the catheter, separate CPT codes for catheter maintenance and drug administration may be applicable after the initial placement. However, 62323 covers only the initial catheter insertion and injection.
  • Bilateral injections performed via a single interlaminar approach with one catheter are not separately billable.

Associated ICD-10 Codes