California · Workers' Compensation
What Is 8 CCR §9792.10.6: IMR Standards and Timeframes?
Title 8, section 9792.10.6, tells the independent review organization (IRO) how to decide your workers’ comp treatment dispute, and how fast. A regular dispute gets a decision within 30 days of the IRO receiving your application and records. A dispute over a listed drug gets 5 business days instead, and an urgent case where treatment has not started gets 3 days. The Administrative Director can approve up to 3 more days for an extraordinary circumstance, and the final decision binds every party, including the claims administrator.
Eman Yazdchi, Esq., Certified Specialist in Workers' Compensation Law, California Board of Legal Specialization, State Bar of California.
California Board of Legal Specialization, State Bar of California

California Board of Legal Specialization, State Bar of California
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The final determination issued by the independent review organization shall be deemed to be the determination of the Administrative Director and shall be binding on all parties.
What is 8 CCR §9792.10.6?
Section 9792.10.6 is the Title 8 rule that tells the IRO how to review your case and exactly how many days it has to decide.
When a claims administrator's utilization review denies or changes your doctor's requested treatment, you have the right to request an independent medical review, called IMR for short. That gets your case a fresh look from an outside reviewer. This site's Labor Code 4610.5 card covers the right to request that review. Section 9792.10.6 picks up once your case is assigned to an IRO. It governs what the reviewer looks at, how many reviewers can be used, and the clock each type of case is decided on. It applies to every IMR assigned under the Labor Code, whether the dispute is about surgery, physical therapy, a diagnostic test, or a prescription drug.
How does the IRO reach a decision?
A medical reviewer examines your submitted records and decides, in plain language where possible, whether the treatment is medically necessary.
Once your case is assigned, the IRO picks a medical reviewer. That reviewer examines the documents filed under the related records rule and decides whether the treatment is medically necessary, using the standard set out in Labor Code section 4610.5. Say the claims administrator does not send the records it owes. The reviewer can still decide, using the utilization review decision's own summary plus whatever you or your physician submitted. But the rule will not let a reviewer decide based only on that utilization review decision. For an unusually complex case, the IRO may use more than one reviewer, with the Administrative Director's written approval. If those reviewers split evenly on whether to provide the treatment, the regulation resolves the tie in favor of providing it.
How many days does the review take?
Thirty days for a regular dispute, 5 business days for a drug-formulary-only dispute, and 3 days for an urgent case where treatment has not started.
| Type of dispute | Decision deadline | Clock starts |
|---|---|---|
| Regular treatment dispute | 30 days | Receipt of the IMR application and supporting records |
| Dispute over a listed MTUS formulary drug only | 5 business days | Receipt of the IMR application and supporting records |
| Expedited review, treatment not yet provided | 3 days | Receipt of the IMR application and supporting records |
| Any of the above, for good cause | Up to 3 extra days | Needs the Administrative Director's approval |
These periods come from the regulation and from its parent statute, Labor Code section 4610.6. That statute sets the same 30-day, working-day, and 3-day periods, and the same extension for extraordinary circumstances or good cause. This card covers that statute and the limited WCAB petition that follows a final decision. If two or more disputes about the same treatment get consolidated, the clock restarts from the last application filed.
What happens once the decision is made?
The decision is deemed to be the Administrative Director's own determination, and it binds the claims administrator, you, and your provider.
The IRO sends its final determination, the reviewer's qualifications, and the reasons for the decision to the Administrative Director, the claims administrator, you, your attorney if you are represented, and your treating provider. Under subdivision (h), that determination is deemed to be the Administrative Director's own decision. It binds every party once issued. This site's IMR appeal guide covers the separate, narrow process for challenging a final determination at the WCAB, which is not a fresh medical review.
What if the claims administrator will not cooperate?
The Administrative Director can order a claims administrator to show cause and assess a penalty for not meeting the independent medical review requirements.
Say the Administrative Director receives credible information that a claims administrator failed to meet its independent medical review duties under Labor Code section 4610.5 or the related regulations. The director can then issue an order to show cause and assess an administrative penalty, separate from the medical decision itself. This site's treatment-denied guide covers what to do at each stage of a denial, including this one.
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What should you do about a pending or finished IMR?
Keep a copy of your IMR application, every record you or your doctor sent in, and the date you sent it. If the deadlines above have passed with no decision, or you disagree with a final determination, call (661) 273-1780 or use the contact form. Yazdchi Law P.C. reviews each workers' compensation matter on its own facts before deciding whether to take it on, from its office in Palmdale. A workers' compensation judge must approve any attorney's fee in a California claim, under Labor Code section 4906, and the usual request is 15% to 18% of the amount recovered. The attorney cost guide explains how that approval works.
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Frequently Asked Questions
How long does my IMR decision take?
Thirty days for a regular treatment dispute, 5 business days for a dispute over a listed formulary drug only, and 3 days for an urgent case where the treatment has not started. Each period runs from the IRO's receipt of your application and supporting records.
What happens if the deadline passes with no decision?
The regulation lets the Administrative Director approve up to 3 extra days for an extraordinary circumstance or good cause. Beyond that, ask the IRO for the status of your case, and contact DWC's Information and Assistance Unit if the delay goes unexplained.
Can new medical records still come in during the review?
Yes, through the application and supporting-documentation process the related records rule sets out, and the reviewer may ask for more information directly. The determination cannot rest only on the utilization review decision itself.
Is the IMR decision final, or can it be appealed?
Once issued, the determination is deemed to be the Administrative Director's own decision and is binding on the claims administrator, you, and your provider. A further challenge is limited to a narrow petition at the WCAB under Labor Code section 4610.6, not a new medical review.
What if the claims administrator will not cooperate with the review?
Under subdivision (i), the Administrative Director can order the claims administrator to show cause and assess an administrative penalty for not meeting the independent medical review requirements. Keep your own notes on every date and request you make.
Who decides my case, and do I know who they are?
A medical reviewer chosen by the IRO decides your case. The IRO must keep that reviewer's identity confidential outside the organization, though it must share the reviewer's qualifications as part of the final determination.
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