In this guide14 sections
- Key takeaways
- Why the medical-legal report matters so much
- QME or AME: who wrote your report?
- Red flags in a QME or AME report
- Your options at a glance
- Step 1: Request a supplemental report
- Step 2: Depose the doctor
- Step 3: Replace the evaluator when the rules were broken
- Step 4: Ask the judge to reject or limit the report
- If you don’t have a lawyer: DEU ratings
- New QME rules for 2026 and 2027
- What to do when you receive a bad report
- Frequently asked questions
- Talk to a California workers’ comp lawyer
To dispute a QME or AME report in California workers’ comp, you challenge the report itself: send a written objection, ask the doctor for a supplemental report, depose the doctor, seek a replacement evaluator when the rules were broken, and if needed, ask a workers’ comp judge to give the report little or no weight. Which tool fits depends on what went wrong and on whether you have a lawyer. Deadlines run from when you receive the report.
Key takeaways
- Disagreeing with a QME isn’t enough to get a new one. You need a specific ground, such as a late report you objected to in time, improper one-sided contact or a conflict of interest.
- The most common fix is a supplemental report request. The evaluator generally must respond within 60 days of a written request (8 CCR §38(i)).
- If you don’t have a lawyer, you can request one factual correction within 30 days of receiving the report and reconsideration of your rating within 30 days of receiving it (Labor Code §4061).
- A report must be substantial medical evidence: an accurate history, an adequate exam and stated reasoning. If it isn’t, a judge can give it little or no weight.
- Because both sides chose an AME, replacing one is much harder than replacing a panel QME.
Why the medical-legal report matters so much
When you or the insurer disagree with your treating doctor about causation, work restrictions, permanent impairment or future care, the dispute goes to a medical-legal evaluator: a panel Qualified Medical Evaluator (QME) or, if you have a lawyer, possibly an Agreed Medical Evaluator (AME). The report usually decides causation, your impairment rating, apportionment, restrictions and future care.
The Workers’ Compensation Appeals Board (WCAB) relies on written reports. Under WCAB Rule 10682 (8 CCR §10682), live medical testimony at trial is allowed only for good cause. A report that leaves out a body part or misapplies apportionment can cut a permanent disability rating by many points, and if it goes unchallenged, it can become the basis of your award.
QME or AME: who wrote your report?
- Panel QME. The DWC Medical Unit issues a panel of three state-certified doctors; the insurer doesn’t handpick them. If you have no lawyer, you choose one and schedule within 10 days (Labor Code §4062.1). If you have a lawyer, each side strikes one name within 10 days and the remaining doctor is the QME (Labor Code §4062.2). The DWC’s QME process Q&A covers the forms.
- AME. Available only if you’re represented. Your attorney and the defense agree on one doctor. You can still depose an AME and request supplemental reports, but you generally can’t replace one just because you dislike the result.
See the difference between a QME and an AME.
Red flags in a QME or AME report
Most disputes involve errors and gaps rather than provable bias. Look for:
- A wrong medical history or a missing description of how you were hurt
- Records you know exist, such as an MRI, surgery or nerve study, that the report never mentions
- A claimed body part or condition the doctor didn’t evaluate
- Apportionment percentages with no explanation of how the doctor reached them
- Conclusions that don’t match the doctor’s own exam findings
- No discussion of how your impairments affect your daily activities
Rule 10682 requires a report to state “the reasons for the opinion,” and Labor Code §4062.3 requires the evaluator to identify everything received, reviewed and relied on.
Your options at a glance
| Problem | Main tool | Rule and timing |
|---|---|---|
| Missing records, unanswered questions, unclear reasoning | Supplemental report request | 8 CCR §38(i): response within 60 days, up to 30 more by agreement |
| Factual errors (unrepresented worker) | Request for factual correction | Labor Code §4061(d); 8 CCR §37: within 30 days of receiving the report |
| Opinions that need testing under oath | Deposition of the doctor | Transcript becomes part of the medical record |
| Report late, no approved extension | Written objection before the report is served, then a new evaluation | Labor Code §4062.5; 8 CCR §§31.5, 38 |
| Improper one-sided contact with the evaluator | Terminate the evaluation and seek a new one, plus costs | Labor Code §4062.3 |
| Report isn’t substantial evidence | Ask the judge to give it no weight or develop the record | Declaration of Readiness, settlement conference, trial |
| Disputed summary rating (unrepresented) | Request reconsideration | Labor Code §4061: within 30 days of receiving the rating |
Step 1: Request a supplemental report
The first and most common move is a written letter to the evaluator that points out what the report missed and asks specific questions: review this record, address this body part, explain this apportionment figure. New records sent with the request must first be served on the other side, and all communication with a panel QME must be in writing and copied to the opposing party.
Unrepresented workers can also request one factual correction, such as a wrong date or history, within 30 days of receiving the report.
Here is a hypothetical. Luis claimed shoulder and neck injuries. The panel QME rated the shoulder but never mentioned the neck, though his treating records describe it. His attorney sends a supplemental request enclosing the properly served neck records and asks the QME to address the cervical spine. If the QME finds ratable impairment in the neck, it can be added to his rating.
Step 2: Depose the doctor
If a supplemental report doesn’t fix the problem, your attorney can take the evaluator’s deposition. The transcript becomes part of the medical evidence. It can expose records the doctor never reviewed, force an explanation of an unsupported apportionment figure, and test whether the rating follows the AMA Guides.
Step 3: Replace the evaluator when the rules were broken
Late reports. A QME or AME must serve the report within 30 days of the exam unless the DWC Medical Director approves an extension (8 CCR §38). If a panel QME misses the deadline, either party may obtain a new evaluation (Labor Code §4062.5). But the party seeking a replacement must have objected in writing that the report was late before the evaluator served it (8 CCR §31.5). Once a late report arrives without that objection, the remedy is usually gone.
Ex parte contact. One-sided communication with a QME or AME is prohibited. If the other side violates the rule, you may terminate the evaluation and get a new one. The party that made the contact may face contempt proceedings and be liable for the resulting costs (Labor Code §4062.3). A 2018 en banc WCAB decision held that a party choosing to terminate must do so within a reasonable time after discovering the contact.
Other replacement grounds. 8 CCR §31.5 lists grounds such as a doctor in the wrong specialty, a conflict of interest, or a QME who can’t schedule the exam within 90 days of the request (120 days if the party with the right to schedule waived the 90-day limit). A May 2025 en banc WCAB decision held that only the Appeals Board decides whether a replacement panel is valid, and that in represented cases, replacing an unavailable QME isn’t automatic; a judge may order it for good cause.
Unrepresented workers have one more protection. If the evaluator shows bias because of race, sex, national origin, religion or sexual orientation, or asks you to undergo an unnecessary medical procedure, you may have good cause to end the exam and receive a new panel (Labor Code §4062.1(d)).
Step 4: Ask the judge to reject or limit the report
If the dispute can’t be resolved informally, your attorney can file a Declaration of Readiness to Proceed and take the issue to a mandatory settlement conference and, if needed, trial. See workers’ comp hearings, the MSC and trial.
A judge can rely only on substantial medical evidence. If a report falls short, the judge can give it little or no weight, rely on other reports, or order the record developed. In a 2024 en banc decision, for example, the WCAB returned a case for further development because the QME didn’t discuss how the worker’s impairments affected his activities of daily living. Decisions are listed on the WCAB’s en banc page.
If you don’t have a lawyer: DEU ratings
When an unrepresented worker sees a panel QME, the DWC’s Disability Evaluation Unit calculates a rating within 20 days of receiving the report (Labor Code §4061(e)). Within 30 days of receiving the rating, you or the employer may ask the Administrative Director to reconsider it, in writing, stating the reasons and serving the other side. Hiring a lawyer later doesn’t by itself entitle you to another evaluation (Labor Code §4062.1(e)).
New QME rules for 2026 and 2027
- Anti-bias training. QMEs applying for reappointment on or after April 1, 2026 must complete 16 hours of continuing education, including at least 2 hours of anti-bias training and 3 hours on report writing (8 CCR §55.1).
- A standard report template is coming. Labor Code §4062.4, added in 2025, directs the DWC to create a template QME report, with regulations due by January 1, 2027.
What to do when you receive a bad report
- Note the date you received it. Deadlines run from receipt.
- List specific errors, such as “the doctor didn’t review my MRI.”
- Request a supplemental report, or a factual correction if you’re unrepresented, with properly served records.
- Get advice before settling on a disputed report. See how to choose the right QME for avoiding problems next time.
Frequently asked questions
Can I get a new QME if I disagree with the report?
Not just because you disagree. You need a specific ground, such as a late report you objected to before it was served, prohibited one-sided contact or a conflict of interest. Disagreement alone is handled through supplemental reports, deposition and argument to the judge.
How long does a QME have to write the report?
Thirty days from the exam, unless the Medical Director grants an extension. Supplemental reports are generally due within 60 days of a written request.
Can I dispute an AME report?
Yes, through supplemental reports, deposition and argument that the opinion isn’t substantial evidence. Replacing an AME is much harder than replacing a panel QME.
What if I think the QME was biased against me?
Write down what happened right away. Bias usually shows up as errors you can attack through the steps above.
Talk to a California workers’ comp lawyer
Employees First Labor Law represents workers exclusively in workers’ comp cases across California. We offer free virtual consultations to review a QME or AME report and the deadlines for challenging it. Contact us online or call (310) 853-3461.
This article is general information about California law as of 2026, not legal advice for your situation. Reading it does not create an attorney-client relationship.
