Here’s what that actually means — and what you can do about it.

You’ve been hurt at work. Your treating physician has examined you, reviewed your imaging, and made a professional medical judgment: you need surgery. Maybe it’s a lumbar fusion. Maybe it’s a rotator cuff repair. Maybe it’s a procedure that could genuinely give you your life back.

Then you get a letter. The insurance company has denied the surgery.

How can they do that? Who gave them the right to override your doctor?

The answer — as frustrating as it is — lies in a process called Utilization Review. And if you’re an injured worker in California, you need to understand it.

What Is Utilization Review (UR)?

Utilization Review, or UR, is a process that California law allows insurance companies to use to evaluate whether medical treatment recommended by your treating physician is “medically necessary” under official state guidelines called the Medical Treatment Utilization Schedule (MTUS).

In theory, UR is supposed to prevent unnecessary treatment. In practice, it’s frequently used as a cost-cutting mechanism — because a UR denial allows the insurance company to avoid paying for your medical care, sometimes indefinitely.

Here’s the part that shocks most injured workers: the doctor who reviews and denies your treatment under UR has never examined you. They may have spent as little as a few minutes reviewing your file. And yet their opinion can override the judgment of the physician who has actually been treating you.

⚠️  The UR Timeline Is Critical Under California Labor Code §4610, insurers must complete Utilization Review within specific timeframes: 5 business days for standard requests, 72 hours for urgent/expedited requests. If they miss these deadlines, the treatment may be deemed approved by operation of law. Deadline violations are worth flagging to your attorney immediately.

 

What Happens After a UR Denial?

If your treatment is denied through UR, you have the right to challenge that decision through a process called Independent Medical Review (IMR), administered by the Department of Industrial Relations.

IMR is a separate review conducted by independent physicians who are supposed to evaluate whether the UR denial was correct. Here’s what you absolutely must know about IMR:

• You have only 30 days from the date of the UR denial notice to request IMR. Miss this deadline and you likely lose your right to challenge the denial through this process.
• IMR decisions are binding. If IMR upholds the denial, your options for appeal become very limited — and very difficult.
• IMR decisions can only be appealed on narrow grounds: plain errors of fact, conflict of interest, or the treatment not being addressed by the MTUS guidelines.

 

The IMR process has been the subject of significant criticism because the decisions are made without a hearing, without the ability to cross-examine the reviewer, and with very limited grounds for appeal. That is precisely why it’s so important to respond quickly and with strong supporting documentation.

What Can You Do?

The best defense against an unfair UR denial is preparation and speed. Here is what we advise our clients:

• Make sure your treating physician submits a complete, detailed Request for Authorization (RFA) that specifically addresses the MTUS guidelines and explains why your condition meets them. Vague or incomplete RFAs are easier to deny.
• Request the IMR immediately — don’t wait. You can submit additional supporting documentation, including letters and records from your treating physician, directly to the IMR reviewer.
• Ask your treating physician to write a detailed letter of medical necessity specifically responding to the UR denial. The more clinical detail and MTUS-referenced reasoning in that letter, the better your chances in IMR.
• Consult an attorney as soon as the UR denial arrives — not after the 30-day window has closed.

 

What Does California Law Say About Your Right to Treatment?

California Labor Code §4600 is the cornerstone of your medical rights as an injured worker. It states that your employer — through its insurance company — must provide all medical treatment that is reasonably required to cure or relieve the effects of your industrial injury.

“Reasonably required” is the operative phrase. The MTUS guidelines set a baseline — but they don’t set a ceiling. Treatment that goes beyond the MTUS can still be approved if your physician can show it is medically necessary based on your specific circumstances.

The system has real flaws. But it also has real remedies — and injured workers who fight back through the proper channels, with proper documentation and experienced legal representation, win these battles every day.

📋  Quick Reference: UR/IMR Process 1. Treating physician submits Request for Authorization (RFA) 2. Insurer conducts Utilization Review — must decide within 5 business days (72 hrs if urgent) 3. If denied, injured worker has 30 days to request Independent Medical Review (IMR) 4. IMR decision is binding — limited grounds for appeal 5. Concurrent options: Petition to the WCAB for serious/imminent injury situations

 

The Bottom Line

The fact that an insurance company can deny medical treatment recommended by your own doctor is one of the most jarring realities injured workers face. It feels wrong — because in many cases, it is wrong.

But you are not powerless. California law gives you the tools to fight back. The key is acting quickly, building your documentation, and having an experienced advocate in your corner who knows how to navigate the UR/IMR process — and how to escalate when necessary.

Your health is not a line item on an insurance spreadsheet. Don’t let them treat it like one.

 

We Will Get You the Treatment You Need — and the Money You Deserve. Facing a UR denial? Call us today for a free consultation. Serving injured workers throughout the Inland Empire and all of California.