Medical Necessity of Multiple Invasive Pain Procedures for Low Back Pain

Assessment of Medical Necessity

The American College of Neurosurgery recommends that only one invasive modality or procedure will be considered medically necessary at a time for the treatment of back pain, as performing multiple invasive pain procedures simultaneously is not medically necessary for patients with low back pain according to established guidelines 1, 2
Patients with lumbar spinal stenosis, lumbosacral spondylosis, lumbosacral radiculopathy, and positive findings on physical examination consistent with both facet-mediated pain and radiculopathy may be considered for individual procedures, but simultaneous procedures are not supported by medical necessity criteria 1, 2, 3

Facet joint injections can be medically necessary for diagnosis of facet pain when specific criteria are met, including symptoms suggestive of facet joint syndrome, positive provocative testing on physical examination, no other obvious cause of pain on imaging, pain limiting daily activities, and pain persisting despite conservative treatment, with moderate evidence for short-term relief of chronic facet-mediated low back pain 1, 3, 4
Transforaminal epidural steroid injections can be medically necessary for radiculopathy when non-invasive measures have failed, radicular pain is consistent with radiologic findings, and documented neurological findings correspond to the affected nerve root, with good evidence for managing disc herniation or radiculitis 2

A sequential approach is recommended rather than simultaneous procedures, allowing for better assessment of which procedure provides the most benefit, reduced risk of complications, and more accurate diagnosis of the primary pain generator 1, 2
Performing one procedure first, assessing the response, and then considering the second procedure if needed is the appropriate approach, with the option to start with the transforaminal epidural steroid injection if radicular symptoms are present, and considering facet joint injections as a subsequent procedure if axial pain persists 1, 2, 3

Diagnostic facet blocks using a double-injection technique with an improvement threshold of 80% are recommended to establish the diagnosis of lumbar facet-mediated pain, as suggested by the Journal of Neurosurgery 5