Doctor Underestimated Your MMI Rating? What to Do Next

Table of Contents

• Why an Underestimated MMI Rating Matters for Your Claim
• MMI Finding vs. Impairment Rating: Know the Difference
• How to Dispute an Impairment Rating: A Step-by-Step Checklist
  • Step 1: Request Your Full Medical Records and Rating Report
  • Step 2: Identify Errors in the Rating
  • Step 3: File Your Challenge Before the Deadline
• Getting a Second Opinion for a Workers’ Compensation Impairment Rating
• What to Do After a 0% Impairment Rating
• Gathering Medical Records for an Impairment Rating Dispute
  • How to Identify Errors in the Rating
  • Confirm Your State’s Rules and Deadlines
• If Treatment or Surgery Is Still Needed After an MMI Finding
• When to Talk to a Workers’ Compensation Attorney
• Frequently Asked Questions

Last Updated: October 18, 2026

Why an Underestimated MMI Rating Matters for Your Claim

Call the Merritt & Merritt Law Firm today at 404-975-1775. Offices in Atlanta, Savannah, Statesboro, and Houston.

If a doctor underestimates your MMI rating, you have options. You can request your records, check the math, get a second opinion, and file a challenge before your state’s deadline.

Here is the core problem. Maximum medical improvement (MMI) is the point where your condition has stabilized and further treatment is unlikely to help. The date matters. The rating that follows matters more.

Many injured workers accept a low rating because they do not know they can question it. That silence costs them.

MMI Finding vs. Impairment Rating: Know the Difference

An MMI finding and an impairment rating are two separate things, and mixing them up is the most common mistake we see. The MMI finding is a medical decision: your treating physician declares your condition stable.

Think of it this way. The MMI date closes the treatment chapter. The rating opens the benefits chapter.

A doctor can declare MMI correctly and still produce a rating you believe is too low. The official workers’ compensation guidance from the U.S. Department of Labor explains how these decisions fit into a claim, and your state’s workers’ compensation board publishes the rating guidelines doctors are supposed to follow.

How to Dispute an Impairment Rating: A Step-by-Step Checklist

Disputing a low rating is a process, not a single letter. Work through these steps in order, and keep a dated copy of everything you send or receive.

Step 1: Request Your Full Medical Records and Rating Report

You are entitled to your own medical records. Ask the treating physician’s office and the claims administrator for the complete file: office notes, imaging reports, surgical records, and the rating report itself. Put the request in writing and keep the receipt.

Step 2: Identify Errors in the Rating

Read the rating report line by line and check for these common problems:

• A body part injured in the accident is missing from the rating
• The wrong edition of the rating guidelines was applied
• Range-of-motion measurements do not match your exam notes
• Permanent restrictions from your doctor were ignored
• A pre-existing condition was over-applied to reduce your percentage

Step 3: File Your Challenge Before the Deadline

Every state sets its own deadline for disputing a rating, and missing it can end your options. Confirm the deadline with your state’s workers’ compensation board in writing. File the challenge in the required form, attach your evidence, and keep proof of the filing date.

Getting a Second Opinion for a Workers’ Compensation Impairment Rating

A second opinion for a workers’ compensation impairment rating is a fresh medical evaluation by a different doctor who reviews your records and examines you.

Start by confirming which type of evaluation you are getting, because the rules and the payer differ:

• State-arranged second opinion. Some workers’ compensation boards let you request an alternate rating physician from a panel, often at the insurer’s expense. The process, forms, and deadlines come from your state board, not the insurer.
• Privately obtained opinion. You can pay a physician of your choosing to review your records and issue a written opinion. This is often faster but usually not reimbursed, so confirm the cost in writing before you schedule.
• Insurer-requested independent medical examination (IME). The insurer selects the doctor and pays for the exam. This is not your second opinion, even though it is a second exam.

Come prepared. Bring your full medical records, imaging, a list of your current symptoms, and a written log of how your injury limits daily tasks. The more specific your functional limitations, the harder they are to dismiss.

Ask the evaluating physician to address specific questions in writing, such as:

• Which edition of the impairment-rating guidelines did you apply, and why?
• Which body parts and functional losses did you measure, and what were the raw measurements?
• Do the treating physician’s permanent restrictions match the rating percentage?
• Was any apportionment applied, and to which pre-existing condition?
• Is the condition stable, or could further treatment change the impairment?

An independent medical examination (IME) is different. The insurer usually requests an IME, and the doctor answers to the insurer, not to you.

Never skip an IME ordered by the insurer. Missing it can suspend your benefits, and that suspension is far harder to undo than the exam is to attend.

Ask for the rating worksheet, not just the final percentage. The worksheet shows which body parts were measured, which edition of the rating guidelines was used, and whether any apportionment was applied. Errors hide in the worksheet, not the summary letter.

What to Do After a 0% Impairment Rating

A 0% impairment rating does not mean your claim is over. It means the rating doctor found no permanent impairment under the guidelines used. That finding can be wrong, especially when your treating physician has already assigned permanent work restrictions.

Start by comparing the two opinions. If your treating physician documented limited range of motion, nerve damage, or surgical hardware, those findings should appear in the rating. When they do not, you have grounds to dispute.

Schedule a Free Consultation →

Next, check whether additional treatment could change the picture. If you still need care, a rating issued too early may not reflect your final condition.

Gathering Medical Records for an Impairment Rating Dispute

Medical records for an impairment rating dispute are the backbone of your challenge. Without them, your objection is just an opinion against another opinion. The goal is not simply to collect paper, it is to build a side-by-side comparison that shows where the rating report departs from the underlying medical evidence.

Collect these documents:

• Emergency room and hospital records from the date of injury
• All imaging reports, including the actual images when available
• Operative reports for any surgery
• Physical therapy progress notes
• Your treating physician’s permanent restrictions
• Pharmacy records showing ongoing treatment
• The complete rating report and, if you can get it, the rating worksheet

Organize everything by date and make an index. A clear, indexed file makes your challenge easier for a judge or reviewer to follow.

How to Identify Errors in the Rating

Once the file is assembled, read the rating report line by line against the records. This comparison is where most successful challenges begin. Check for these common problems:

• A body part injured in the accident is missing from the rating
• The wrong edition of the rating guidelines was applied
• Range-of-motion measurements do not match your exam notes
• Permanent restrictions from your doctor were ignored
• A pre-existing condition was over-applied to reduce your percentage
• Diagnostic findings, nerve damage, surgical hardware, imaging results, appear in the records but not in the rating

For each discrepancy, write down the page in the rating report, the page in the medical record that contradicts it, and a one-sentence explanation. That three-part note is the raw material for a challenge letter, a second-opinion request, or hearing testimony.

Confirm Your State’s Rules and Deadlines

Workers’ compensation procedures vary by state and claim system, and a challenge that would succeed in one state may be filed in the wrong form or too late in another. Before you rely on any step in this guide, confirm the following with your state’s workers’ compensation board in writing:

• The deadline to dispute a rating or MMI finding
• The required form and where to file it
• Whether a state-arranged second opinion is available and how to request it
• Whether new or worsening conditions can reopen the claim after a rating

Keep a dated copy of everything you send or receive, including the board’s written responses. If a deadline is close or the rules are unclear, that is the point to involve an attorney rather than guess.

If Treatment or Surgery Is Still Needed After an MMI Finding

An MMI finding made while you still need treatment or surgery is a finding worth questioning. MMI means your condition has stabilized. If your doctor recommends a surgery you have not had, or if your symptoms are getting worse, the stabilization call may be premature.

Tell your treating physician in writing that you disagree with the MMI date and ask them to document why. If they will not budge, a second opinion can support a request to reopen treatment. Some states allow benefits to restart when a condition worsens, but the rules vary, so confirm the process with your state board.

When to Talk to a Workers’ Compensation Attorney

Talk to a workers’ compensation attorney when a deadline is close, when the rating conflicts with your treating physician’s findings, or when you are unsure how to challenge an MMI finding.

At Merritt & Merritt Law Firm, we have over 45 years of trial experience with injury and workers’ compensation claims. We offer 24-hour service and can meet you at home, in the office, or at the hospital.

A free consultation gives you a clear read on your options before any deadline passes. Bring your rating report and your records, and we will walk through the numbers with you.

If a low rating has left you facing reduced benefits and mounting bills, do not sign anything until you understand your rights. Merritt & Merritt Law Firm offers a free case evaluation, 24-hour availability, and home, office, or hospital visits. You pay only if we win. Schedule a free consultation and get clear, realistic answers about your claim.