By Brian French | FloridaMedicalNews.com | October 24, 2026
Quick Answer
Low-dose radiation therapy (LDRT) for osteoarthritis is spreading across Florida cancer centers, but access depends on two gatekeepers. Insurers are split: some cover it, others call it investigational. Rheumatologists are split too, with some co-authoring Florida studies and others urging caution. Patients should confirm coverage in writing and ask their rheumatologist and a radiation oncologist together.
Key Takeaways
- Insurer policies on LDRT for osteoarthritis range from “medically necessary” to “investigational.”
- There are no U.S. clinical guidelines for LDRT in non-cancer conditions, which insurers cite when denying coverage.
- A Tampa Bay study co-authored by local rheumatologists reported positive results in 59 patients.
- A rheumatology journal editorial warns doctors to be cautious until more double-blind trials are done.
- Florida availability now stretches from Miami to Panama City.
Why the Gatekeepers Matter More Than the Science
FloridaMedicalNews.com covered the clinical evidence for LDRT earlier this month. Since then, more Florida patients have asked a practical question: if it might work, why is it so hard to get?
The answer is that two groups decide access. Insurers decide whether it is paid for. Referring physicians, especially rheumatologists and orthopedists, decide whether patients ever hear about it. Neither group agrees yet.
The Insurance Split
National insurers have reached opposite conclusions from the same evidence.
Covered with criteria. CVS Health’s radiation oncology program, used by Aetna, lists osteoarthritis among benign conditions for which radiation therapy is considered medically necessary. Kaiser Permanente of Washington added explicit coverage for osteoarthritis to its low-dose radiotherapy policy effective May 1, 2026, with prior authorization required, including for Medicare Advantage members.
Not covered. Blue Shield of California classifies low-dose radiotherapy for osteoarthritis as investigational. Blue Cross and Blue Shield of Nebraska also calls it investigational in its August 2026 policy.
The reason for denials. Nebraska’s policy notes that no U.S.-based guidelines exist for LDRT in non-cancer conditions, so it relied on a 2015 German consensus guideline instead.
Medicare. Many U.S. hospital programs, including Rush and UCLA, tell patients that Medicare generally covers LDRT for osteoarthritis. FloridaMedicalNews.com did not find a national Medicare coverage determination specific to LDRT for arthritis, so Florida patients should confirm with their plan, especially if enrolled in Medicare Advantage.
| Insurer policy | Position on LDRT for osteoarthritis |
|---|---|
| CVS Health / Aetna | Medically necessary, with criteria |
| Kaiser Permanente Washington | Covered, prior authorization (May 2026) |
| Blue Shield of California | Investigational |
| BCBS Nebraska | Investigational (Aug. 2026) |
| Traditional Medicare | Often covered per providers; verify |
FloridaMedicalNews.com could not locate a published Florida Blue policy specific to LDRT for osteoarthritis. Florida Blue members should ask for a written coverage determination before starting treatment.
The Referral Split
The skeptics. A recent editorial in the journal Arthritis & Rheumatology argued that the evidence base is sparse and that LDRT may not beat placebo, noting the placebo effect in osteoarthritis is unusually strong. The author said radiation oncologists across the U.S. have been presenting to rheumatology departments and urged rheumatologists to be circumspect until more double-blind randomized trials are completed.
That caution has history. Two Dutch sham-controlled trials in knee and hand osteoarthritis found no delayed benefit at 6 or 12 months.
The collaborators. In Tampa Bay, the two specialties are working together. A study presented at the 2025 ASTRO meeting, led by Clearwater Radiation Oncology with co-authors from Bay Area Rheumatology in Oldsmar, Gulf Coast Rheumatology in Trinity and BayCare Medical Group, treated 59 patients and 94 joints. Each received six 0.5 Gy treatments over two weeks. The authors reported effective results and called for larger prospective studies.
The newest evidence. A long-term analysis presented at ASTRO in September 2026 found LDRT was associated with a 67% lower adjusted hazard of disability from knee osteoarthritis. The benefit was greatest in grade 2 disease, and patients with grade 3 and 4 disease were excluded.
| Position | Who | What they say |
|---|---|---|
| Caution | Arthritis & Rheumatology editorial | Wait for more double-blind trials |
| Caution | Dutch sham-controlled trials | No benefit at 6 to 12 months |
| Collaboration | Tampa Bay radiation-rheumatology team | Positive results in 94 joints |
| Encouraging | ASTRO 2026 long-term study | 67% lower disability hazard |
Where Florida Patients Can Find LDRT
Florida capacity has grown well beyond the providers in our earlier coverage. These programs are listed in public directories or on provider websites. This is not an endorsement, and patients should confirm services directly.
| Provider | Location |
|---|---|
| UHealth (University of Miami) | Miami, North Miami |
| Mount Sinai Medical Center | Miami Beach |
| Mayo Clinic Florida | Jacksonville |
| Tampa Oncology and Proton | Tampa, Brandon |
| Wellspring Oncology | Pinellas Park |
| Orlando Health Cancer Institute at Bayfront | St. Petersburg |
| Florida Cancer Specialists & Research Institute | Multiple locations |
| Florida Cancer Affiliates | Panama City |
| Clearwater Radiation Oncology | Clearwater |
Patient stories are emerging. Orlando Health’s Bayfront program described a 70-year-old patient who had relied on a rolling walker after years of knee pain and reported major improvement after six treatments. Its medical director said candidates can include osteoarthritis patients 50 and older who have not improved with weight management, medication or injections.
Florida Cancer Specialists says LDRT appointments run about 10 to 15 minutes, with the radiation itself taking seconds. In Panama City, radiation oncologist Brian Center of Florida Cancer Affiliates said the treatment is used for arthritis and tendonitis, with relief lasting six months to two years for responders.
A Patient Checklist Before You Book
- Get your arthritis grade. Evidence is strongest for mild-to-moderate disease, not bone-on-bone joints.
- Ask your rheumatologist or orthopedist first. Get their view on fit with your full treatment plan.
- Request a written coverage decision. Ask your insurer whether LDRT for osteoarthritis is covered and whether prior authorization is needed.
- Ask about cost if denied. Get the self-pay price in writing before treatment starts.
- Ask the radiation oncologist about outcomes. How many arthritis patients have they treated, and how do they track results?
- Keep other options open. LDRT does not rule out later injections or joint replacement.
Brian’s Take
I spent years watching investors argue over the same numbers and reach opposite conclusions. That is exactly what is happening with LDRT.
Aetna and Kaiser looked at the evidence and decided to pay. Two Blue plans looked at the same evidence and called it investigational. One rheumatology editorial says wait; a group of Tampa Bay rheumatologists put their names on a study saying it works. None of them is acting in bad faith. The evidence is simply in the gray zone between promising and proven.
For Florida, that gray zone is expensive. We have one of the oldest populations in the country, and a lot of people with arthritis who cannot take NSAIDs or are not ready for surgery. If LDRT works for even a portion of them, coverage decisions made in other states’ policy offices will shape care here.
The Tampa Bay model is the right one. When radiation oncologists and rheumatologists treat patients together and publish what they find, everyone gets better information. My advice to patients is simple: don’t let the radiation center be the only voice. Bring your rheumatologist into the decision, and get your insurer’s answer in writing before the first session.
This article is for informational purposes only and is not medical advice.
Frequently Asked Questions
Does insurance cover low-dose radiation for arthritis in Florida?
It depends on the plan. Aetna/CVS and some others cover it with criteria, while several Blue plans consider it investigational. Get a written determination first.
Does Medicare cover LDRT for osteoarthritis?
Many U.S. providers say Medicare generally covers it, but there is no specific national coverage decision. Medicare Advantage plans may require prior authorization.
Why are some rheumatologists skeptical?
Some Dutch sham-controlled trials found no benefit, and osteoarthritis has a strong placebo response. A rheumatology journal editorial urged caution pending more trials.
Are any Florida rheumatologists involved in LDRT research?
Yes. Rheumatologists from Oldsmar and Trinity co-authored a Clearwater-based LDRT study presented at ASTRO in 2025.
Where can I get LDRT in Florida?
Programs include UHealth, Mount Sinai Miami Beach, Mayo Clinic Florida, Tampa Oncology and Proton, Wellspring Oncology, Orlando Health Bayfront, Florida Cancer Specialists and Florida Cancer Affiliates.
Who is the best candidate?
Typically adults over 50 with mild-to-moderate osteoarthritis who have not improved with medication, therapy or injections.
Sources and Further Reading
- CVS Health Radiation Oncology, Non-Malignant Conditions Policy
- Kaiser Permanente Washington, Changes to Medical Necessity Review Criteria for Low Dose Radiotherapy (Feb. 2026 notice)
- Blue Shield of California, Medical Policy 7.01.179, Low-Dose Radiotherapy for Non-Oncologic Indications
- Blue Cross and Blue Shield of Nebraska, Medical Policy IV.85, Low Dose Radiation for Osteoarthritis or Plantar Fasciitis
- Rush University Medical Center, Low-Dose Radiation Therapy for Osteoarthritis
- UCLA Health, LDRT for Osteoarthritis
- “Low Dose Radiation Therapy and Osteoarthritis Pain,” Arthritis & Rheumatology (Joel A. Block)
- “Low-Dose Radiation Therapy for Knee, Hand Osteoarthritis Questioned,” Rheumatology Network (on The Lancet Rheumatology)
- “Low Dose Radiation Therapy for Osteoarthritis: A Retrospective Study of 59 Patients and 94 Joints Treated,” ASTRO 2025 Annual Meeting
- “Low-Dose Radiation Therapy May Slow Progression of Knee Osteoarthritis,” ASTRO (Sept. 2026)
- National LDRT Provider Directory, ArthritisLDRT.org
- “Low Dose Radiation Therapy to Help Relieve Arthritis Pain,” Bay News 9 (Oct. 2026)
- “A Patient’s Journey to Pain Relief,” Florida Cancer Specialists & Research Institute
- “Medical Monday: Radiation Therapy for Arthritis and Tendonitis,” WJHG
