What a Pain Society Actually Says About Injecting an Injured Disc

The 2025 ASIPP guideline grades each lumbar target separately. Intradiscal PRP, intradiscal bone marrow concentrate and epidural PRP carry Level III, Fair evidence and a Moderate recommendation. Sacroiliac joint PRP is Level IV, Limited, with a Low recommendation. Every use comes after a thorough diagnostic workup.

In 2025 the American Society of Interventional Pain Physicians published 119 pages on regenerative therapies for chronic low back pain. It had thirty-five authors, and thirty-three of them took part in the formal consensus. It used GRADE methodology and made nineteen recommendations. Every single one passed with 100% agreement.

Almost nobody in a claim file has read it. Still, it is the rulebook for how this treatment should be used in the low back. And it is unusually blunt about its own limits.

The grades, target by target

The guideline does not grade “regenerative medicine.” It grades each body target on its own, because the evidence behind each one is different:

• Intradiscal PRP — Evidence Level III, Fair. Consensus recommendation: Moderate.
• Intradiscal bone marrow aspirate concentrate — Level III, Fair. Moderate.
• Epidural PRP — Level III, Fair. Moderate.
• Facet joint PRP and mesenchymal stem cells — Level IV, Limited. Moderate.
• Sacroiliac joint PRP — Level IV, Limited. Low.
• Functional spinal unit injections — Evidence Level Very Low. Low.

In plain language: for the disc and the epidural space, most of the studies are controlled but not top-tier. The panel reached moderate agreement that the treatment has a clear role. The advice is for chosen patients, not for everyone with a sore back. For the sacroiliac joint, the evidence is thinner and the advice is weaker to match. Nobody treating the sacroiliac joint gets to borrow the disc’s grade. And nobody treating a disc gets to borrow the knee studies.

All orthobiologic care: Our orthobiologics and PRP injections page lists every injury we treat with PRP, bone marrow concentrate and microfragmented fat.

What the guideline says besides the grades

Three things. They are the parts a clinic selling injections would rather not print.

Diagnosis comes first. The guideline says regenerative therapy comes after a thorough diagnostic workup. Low back pain is not a diagnosis. It is a place. The disc, the facet joints, the sacroiliac joint and the nerve root all cause pain. On the pain drawing, that pain overlaps. But the treatment for each one is completely different. What a diagnostic block proves, and what it disproves.

It is not a monotherapy. The guideline says to use these treatments along with structured exercise, physical therapy and lifestyle changes. An injection with no rehab behind it is half a treatment plan billed as a whole one.

It tells clinicians to talk about money before treatment. The precautions section instructs physicians to inform patients that these costs are mostly not covered by commercial insurance. The society that wrote the guideline and the insurer that denies the claim agree fully about payment. They disagree fully about evidence. Why those are two separate questions.

The limitation the guideline puts in its own text

The same document says regenerative medicine is still early in clinical testing. It asks for careful hope. It names the shortage of high-quality studies as its main limit.

Both things are true at once. Any page that gives you only one half is selling something. A specialty society that writes 119 pages, nineteen unanimous recommendations and a GRADE review is evidence that this is established clinical practice with clear uses. It is not a claim that the question is closed. Cite the levels. Skip the adjectives.

Why the target matters more than the product

Patients come in asking for PRP. That is the wrong place to start. The useful question is which structure is sending the pain signal, because that decides both the treatment and how much evidence stands behind it.

A herniated disc pressing on a nerve root makes pain that is largely chemical, not just mechanical. That is why an epidural treatment aimed at that inflammatory chain reaction can help even when nothing has changed on the scan. Facet joint pain acts differently and is confirmed a different way. A sacroiliac joint is confirmed a different way again. Each of those roads leads to a different grade in the table above. The middle ground between failed conservative care and major surgery.

Where a collision complicates the picture

The ASIPP guideline covers chronic low back pain. A back hurt six weeks ago is a different case. The honest answer is that these grades were not built for the acute phase (the first weeks after injury). Early care after an injury means finding the diagnosis, recording how you were hurt and what you lost, and rebuilding the load you can handle. It does not mean grabbing the most advanced thing on the shelf in week two.

The order of care also decides whether treatment holds up in review later. Care that follows the published order — diagnosis, conservative treatment, targeted treatment, biologic where it fits — reads as a treatment plan. Care that starts at the end reads as a product being sold. The person reviewing the file values it that way. How that review actually works.

What to take from a 119-page document

The grades are specific. The order is required. The payment conversation belongs before treatment rather than after it. And the society’s own caution is part of the record, not something to argue away. Ask which line of that table your proposed injection sits on. A doctor who cannot answer has not read it either.

Frequently asked questions

What evidence level does ASIPP give intradiscal PRP?

Level III, Fair, with a moderate consensus-based clinical recommendation. That grade comes from the 2025 update to its guidelines on regenerative therapies for chronic low back pain. Intradiscal bone marrow aspirate concentrate and epidural PRP carry the same grade. Facet and sacroiliac uses are graded lower. Learn more: the full 2024 to 2026 guideline record.

Can PRP be injected into a herniated disc after a car accident?

It is one of the uses the 2025 ASIPP guideline covers, at Level III, Fair with a moderate recommendation. It applies to chronic low back pain after a thorough diagnostic workup. It does not apply to the acute phase of a fresh injury. The order of care is part of the recommendation. Learn more: what sits between conservative care and surgery.

Why does my doctor want a diagnostic block before injecting anything?

Because low back pain is a place, not a diagnosis. Say a block reliably stops the pain, and you feel the pain return as the anesthetic (numbing medicine) wears off. That finds the structure sending the signal. A block that changes nothing has knocked down a costly guess for little money. Learn more: how two diagnostic blocks change a fusion conversation.

Is a sacroiliac PRP injection as well supported as a disc injection?

No. ASIPP grades sacroiliac joint PRP at Evidence Level IV, Limited, with a low consensus recommendation. Intradiscal and epidural PRP get Level III, Fair and a moderate recommendation. Each grade belongs to one target and does not carry over. Learn more: how the societies graded each indication.

Does an injection replace physical therapy?

No. The guideline says plainly that these treatments should be used together with structured exercise, physical therapy and lifestyle changes. The procedure opens a window. Rehab does its work inside that window. Learn more: why the biological environment decides whether the window holds.

Where is Injury Experts located?

Injury Experts is at 4477 Woodson Rd, Suite 202, St. Louis, MO 63134, next to Lambert International Airport, serving the St. Louis region in Missouri and Illinois. Call (314) 887-5866 or text (314) 886-5902.

This article is for general education and is not medical advice. It does not create a physician–patient relationship. Do not start, stop, or change any medication — including opioid medication — without consulting your physician.

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