CPT® Code 62320

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

The procedure described by CPT® Code 62320 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 is performed without the use of imaging guidance. Prior to the injection, the skin over the targeted spinal area is thoroughly cleansed with an antiseptic solution to minimize the risk of infection. A local anesthetic is then administered to numb the area, ensuring patient comfort during the procedure. A thin spinal needle or catheter is carefully inserted into the back, accessing either the epidural space, which is the outermost area of the spinal canal filled with cerebrospinal fluid, or the subarachnoid space, which is located closer to the spinal cord. The subarachnoid space is situated between the arachnoid membrane and the pia mater, the innermost protective layer surrounding the spinal cord. In some cases, contrast dye may be injected prior to the therapeutic substance to confirm the correct placement of the needle and to visualize the flow of medication into the desired area, a process known as epidurography. The substances injected can include anesthetics, antispasmodics, opioids, steroids, or other solutions, but do not include neurolytic substances. After the injection, the patient is monitored for any potential adverse effects, ensuring their safety and well-being. This code is specifically used for interlaminar epidural or subarachnoid injections in the cervical or thoracic regions without imaging guidance, distinguishing it from other related codes that specify different regions or the use of imaging techniques.