Trigger Point Injections for Chronic Low-Back Pain

Assessment of Medical Necessity

Trigger point injections are not recommended for chronic low-back pain without radiculopathy from degenerative disease of the lumbar spine because long-lasting benefit has not been demonstrated (Level II evidence) 1
Additional sets of trigger point injections are not considered medically necessary if no clinical response is achieved, according to applicable criteria (CPB 0016 B) 1, 2
The medical record lacks documentation confirming relief from previous TPIs, and while "good relief" was mentioned from one injection, there is no quantifiable documentation of the degree or duration of relief from the most recent injections 2, 3

Once a therapeutic effect is achieved, it is rarely considered medically necessary to repeat trigger point injections more frequently than once every 2 months 3
Up to 4 sets of injections may be considered medically necessary to diagnose pain origin and achieve therapeutic effect, but additional sets are not medically necessary without documented clinical response 2, 3
Studies show that TPIs may provide short-term relief for selected patients with low-back pain, but there is insufficient evidence for long-term efficacy 4, 5
The most recent guidelines do not support frequent, repeated TPIs without documented substantial improvement 1, 2

The patient has appropriately tried conservative measures (e.g. medication, therapeutic exercise, physical therapy) before receiving injections 6
Without documentation confirming the degree and duration of relief from previous injections, medical necessity for repeat injections cannot be established 1, 2

Evidence suggests that dry needling may be as effective as injections containing medications for myofascial pain 4

Performing repeated injections without documenting quantifiable improvement in pain scores, function, and duration of relief 3
Continuing the same intervention despite lack of documented significant improvement 1, 2
Not following evidence-based guidelines regarding appropriate frequency of injections (not more frequently than every 2 months after therapeutic effect is achieved) 2, 3