How We Establish Medical Necessity Before Treating Pain

“Medical necessity” is one of those phrases that can mean everything or nothing. In our practice it means something specific and testable: three independent streams of evidence that have to agree before we treat.

Stream one: objective symptom mapping

We require documented chronic pain — typically of at least one to three months — that has failed to improve with conservative care. That means physical therapy, chiropractic care and non-narcotic pharmacological trials have been tried and documented, not merely mentioned.

This is the step most often skipped elsewhere, and skipping it is how patients end up on escalating medication for a problem nobody has characterized.

Stream two: multimodal correlation

Subjective pain reports have to correlate with objective findings. We use imaging (MRI, CT, X-ray) and electrodiagnostic testing (EMG/NCS) to distinguish peripheral nerve damage from radicular spinal pain, and to confirm that what a patient describes matches what the anatomy shows.

Where the two do not agree, that discrepancy is itself clinically important — it redirects the workup rather than being ignored.

Stream three: metabolic and inflammatory assessment

This is the stream most pain practices omit entirely. Chronic pain is frequently an extension of systemic metabolic inflammation, so we require metabolic health screening as part of establishing necessity.

We treat pain not only as a neurological event but as a biological one requiring internal terrain stabilization. Two patients with identical scans can have entirely different pain because their metabolic terrain differs — see how inflammation and diet drive chronic pain.

Then we have to prove it worked

Establishing necessity at the outset is not sufficient. Interventional procedures are both diagnostic and therapeutic, and where a patient requests repeat intervention we require documentation of at least 50% functional improvement. Without that data we discontinue the therapy rather than continue an assembly-line model of endless injections.

Medication management is reviewed every four months; absent functional improvement, medication is tapered. A full retrospective analysis is conducted every six months. Details for referring clinicians and dispensing partners are in our opioid stewardship guide.

Frequently asked questions

Why do I need imaging or nerve testing before treatment?

Because subjective pain reports need to correlate with objective structural or neurological findings. Imaging and electrodiagnostic testing distinguish peripheral nerve damage from radicular spinal pain and confirm the target before any procedure.

Why does a pain clinic order metabolic blood work?

Because chronic pain is frequently an extension of systemic metabolic inflammation. Screening metabolic and inflammatory markers identifies drivers that imaging cannot show, and treating them is often what makes structural treatment hold. Individual results vary.

What happens if a procedure does not help?

We require documentation of at least 50% functional improvement before repeating an intervention. Without it, we discontinue that therapy and reassess rather than repeating it indefinitely. Do not stop or change any prescribed medication on your own.

Where are you located and how do I make an appointment?

Padda Institute Center for Interventional Pain Management, 4477 Woodson Road, Suite 100, St. Louis, MO 63134. Book at painmd.tv/appointment/ or call (314) 481-5000.

Key takeaways

• Three independent data streams must agree before treatment: symptom history, objective imaging, metabolic screening.
• Documented failure of conservative care is a prerequisite, not a formality.
• Metabolic and inflammatory assessment is part of establishing necessity, not an add-on.
• Repeat intervention requires at least 50% documented functional improvement.

Medically reviewed by Dr. Gurpreet Singh Padda, MD, MBA, MHP — Board Certified in Anesthesiology, Pain Medicine, Interventional Pain Management, Addiction Medicine, and Obesity Medicine. Last reviewed July 2026.

This article is educational and is not a substitute for evaluation, diagnosis, or treatment by a physician. Individual results vary. Do not start, stop, or change any medication without consulting your physician.

Dr. Gurpreet Singh Padda, MD, MBA, MHP , MD, MBA, MHP