Medical Necessity for Transforaminal Epidural Injection in Spondylosis

Rationale for Denial

• The American Society of Anesthesiologists (ASA) guidelines strongly recommend epidural steroid injections with or without local anesthetics specifically for patients with radicular pain or radiculopathy, not for non-radicular back pain 1
• The American College of Physicians recommends against offering spinal epidural steroid injections for non-radicular low back pain, as the evidence for their use in this context is limited 2

Medical Necessity Criteria for TFESI

• Patient must have clinical evidence of radiculopathy with pain radiating below the knee 2
• There should be MRI evidence of pathology such as nerve root compression or moderate to severe disc herniation 2, 3
• Patient should have failed at least 4 weeks of conservative treatment including physical therapy 2
• Image guidance (fluoroscopy) must be used for proper needle placement 1, 3

Diagnostic Use of TFESI

• Symptoms suggestive of chronic radiculopathy are required for diagnostic TFESI 1
• Pain appearing to be due to mono-radiculopathy is necessary for diagnostic TFESI 1
• Clinical picture suggestive of nerve root involvement is needed for diagnostic TFESI 1

Risk-Benefit Analysis

• TFESIs carry significant risks including dural puncture, infections, cauda equina syndrome, sensorimotor deficits, and even rare but catastrophic neurological complications such as spinal cord injury 1, 2, 3
• The physician's plan to complete second diagnostic medial branch blocks suggests facet-mediated pain rather than radicular pain, which would require a different treatment approach 2

Conclusion on Medical Necessity

• The diagnosis code explicitly indicates the absence of radiculopathy, which is the primary indication for TFESI 1, 2
• Non-radicular low back pain should not be treated with epidural steroid injections according to current guidelines 2