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What Is Maximum Medical Improvement (MMI) and Why It Matters in Your Claim

October 6, 2025

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shoulder joint x-ray image on digital tablet with doctor team medical diagnose  injuries of tendons and bones.

When you’re injured on the job, navigating the Washington State workers’ compensation system can feel overwhelming. One of the most critical milestones in your claim is reaching Maximum Medical Improvement (MMI). Understanding what MMI means and how it affects your Labor & Industries (L&I) claim is essential to protecting your rights and securing the compensation to which you are entitled.

What Is Maximum Medical Improvement?

Maximum Medical Improvement (MMI) occurs when your medical condition is considered fixed and stable. This means your workplace injury or industrial disease is unlikely to improve further with additional medical treatment. At this point, your doctor determines that you’ve recovered as much as possible, and any remaining symptoms or limitations are likely permanent.

MMI doesn’t necessarily mean you’re fully healed; it means your condition has plateaued. You may still experience pain, limited mobility, or other impairments, but further treatment won’t significantly change your condition.

Why MMI Is a Turning Point in Your L&I Claim

Reaching MMI is a pivotal moment in your workers’ compensation journey. It triggers several important processes:

1. Claim Closure

Once you reach MMI, L&I or your self-insured employer will begin the process of closing your claim. This involves an Independent Medical Exam (IME) conducted by an L&I-approved provider who evaluates your condition and confirms that you’ve reached MMI.

2. Released to Work

Your Washington state L&I claim can also be closed when your doctor has released you to work. This may be released to full-duty, released to full-duty but with reduced hours, released to light-duty, or released to light-duty with reduced hours.

3. End of Medical Benefits

L&I medical benefits typically end once you reach MMI. While curative and rehabilitative treatments are covered during your recovery, they stop when your condition stabilizes. If you need further care after claim closure, you may need to reopen your claim, which requires medical evidence that your condition has worsened.

How MMI Affects Your Compensation

Permanent Partial Disability (PPD) Awards

If your injury results in a permanent loss of function, you may qualify for a PPD award. These awards are based on:

  • Type and severity of injury
  • Impairment rating
  • Date of injury (which affects payout due to cost-of-living adjustments)
  • Efforts to support your claim (e.g., attending IMEs, providing accurate documentation) 

If the award amount is less than three times the state’s average monthly wage at the date of injury, L&I or the self-insured employer (SIE) sends a check for that amount.

If the award exceeds more than three times the state’s average monthly wage at the date of injury, L&I or the SIE makes a down payment from the PPD Award Down Payment Amounts chart. They then pay the balance of the award once a month in installments equal to the worker’s monthly time-loss compensation (at the time of closure).

Time-Loss and Loss of Earning Power (LEP) Benefits

Once you reach MMI, time-loss benefits (also known as wage replacement) typically end unless your claim is reopened. If you return to work but earn less due to your injury, you may qualify for LEP benefits, which compensate for reduced earning capacity.

The Role of the Independent Medical Exam (IME)

An IME is a critical part of determining MMI. It’s not a treatment appointment but an evaluation requested by L&I or your employer to assess your condition. The IME provider reviews your medical history, conducts a physical exam, and provides a report that influences your claim’s outcome.

It’s important to note that IME doctors are selected by L&I or self-insured employers and may not always advocate for your best interests. Having an experienced L&I attorney can help ensure your rights are protected during this process.

What Happens After MMI?

Claim Closure

Once MMI is confirmed, L&I will issue a written closing order. This document outlines the benefits you’ve received and any final awards, such as PPD. You have the right to protest or appeal this decision within 60 days if you disagree with the outcome.

Returning to Work

Your doctor may release you to return to work in various capacities:

  • Full-duty
  • Full-duty with reduced hours
  • Light-duty
  • Light-duty with reduced hours 

If your injury prevents you from returning to your previous job, you may be eligible for vocational rehabilitation services, which include job training, counseling, and placement assistance.

Reopening Your Claim

If your condition worsens after reaching MMI, you and your doctor can apply to reopen your claim. For medical treatment only, you can apply at any time. For time-loss and disability benefits, you must apply within seven years of the original claim closure (ten years for eye injuries).

Navigating the complexities of MMI, IMEs, and claim closure can be daunting. Many injured workers miss out on benefits because they don’t understand their rights or fail to challenge unfair decisions. At Emery | Reddy,PLLC, our experienced L&I Attorneys advocate for Washington workers, ensuring you receive the full compensation you’re entitled to.

We handle both workers’ compensation and employment law claims, which means we can identify additional legal avenues, such as third-party claims or employer retaliation, that may increase your overall compensation.

Fight For the Compensation You Deserve

Reaching Maximum Medical Improvement is a major milestone in your workers’ compensation claim. It marks the end of active treatment and the beginning of evaluating long-term impacts. Understanding what MMI means, how it affects your benefits, and what steps to take next can make a significant difference in your recovery and financial future.

If you’ve reached MMI or are unsure about your claim status, contact Emery | Reddy for a free case review. We’ll help you navigate the process, protect your rights, and fight for the compensation you deserve.

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