The transforaminal epidural injection codes 64479-64484 describe injections that enter the epidural space through the intervetebral foramen. This technique differs from interlaminar [translaminar] epidural injection technique (62310-62311) and the paravertebral facet joint nerve injection technique (64490-64495). Since the vertebral artery (in the cervical spine), radiculomedullary arteries, as well as the spinal cord are in close proximity to the nerve root, this procedure involves a much higher risk with more work than a translaminar epidural injection.
Transforaminal epidural injection codes 64479, 64480, 64483, and 64484 now include the fluoroscopic and computed tomographic (CT) needle placement imaging services in the code descriptors. Imaging guidance (fluoroscopy or CT) and any injection of contrast are inclusive components of codes 64479-64484.