CPT® Code 62324

Injection(s), including indwelling catheter placement, continuous infusion or intermittent bolus, of diagnostic or therapeutic substance(s) (eg, anesthetic, antispasmodic, opioid, steroid, other solution), not including neurolytic substances, interlaminar epidural or subarachnoid, cervical or thoracic; without imaging guidance

The procedure described by CPT® Code 62324 involves the injection of diagnostic or therapeutic substances into the epidural or subarachnoid space of the cervical or thoracic region of the spine. This procedure includes the placement of an indwelling catheter, which allows for either continuous infusion or intermittent bolus administration of various substances, such as anesthetics, antispasmodics, opioids, steroids, or other solutions. It is important to note that neurolytic substances are explicitly excluded from this procedure. The process begins with the cleansing of the skin over the targeted spinal area using an antiseptic solution, followed by the administration of a local anesthetic to minimize discomfort during the procedure. A spinal needle is then carefully inserted into the epidural or subarachnoid space, typically through a paramedian or midline interlaminar approach. Although fluoroscopic guidance is commonly used, it is not a requirement for this specific code. The epidural space is defined as the outermost area of the spinal canal, which contains cerebrospinal fluid and is situated between the dura mater and the vertebral wall. In contrast, the subarachnoid space is located closer to the spinal cord, nestled between the arachnoid and pia mater membranes. To ensure accurate needle placement, contrast dye may be utilized prior to the injection of the therapeutic substance. Once the catheter is securely positioned within the target space, the selected substance is administered, either continuously or as an intermittent bolus. Post-procedure, the patient is monitored for any potential adverse effects resulting from the injection.