“You’ve reached MMI.” Few phrases in workers’ comp cause more confusion — or more quiet damage to claims — than this one.
What MMI is
Maximum Medical Improvement is the treating doctor’s opinion that your condition has improved as much as it’s going to with reasonable treatment. A plateau — not a finish line, not “all better,” and not the end of the claim.
What changes at MMI
- The impairment rating happens. At MMI the doctor assigns a permanent impairment percentage — the number that drives permanent disability money.
- Income benefits can shift. Temporary benefits may convert, reduce, or stop depending on your work status and state rules — this is where carriers move fast and workers get surprised.
- Settlement season opens. Carriers prefer to settle after MMI because the exposure is finally measurable.
Why insurers love an early MMI
Every week before MMI is a week of temporary benefits and active treatment the carrier pays for. An early MMI declaration caps treatment, triggers a (often low) rating, and starts the settlement clock — all in the carrier’s favor. If MMI feels premature while you’re still in real treatment, that instinct is worth taking seriously.
What to do at MMI
- Ask the doctor what the impairment rating is and what it’s based on.
- Don’t stop documented treatment on your own.
- Get the benefit-change math checked before agreeing to anything.
- Treat any settlement offer that arrives with the MMI letter as an opening bid.
MMI disputes are exactly where representation pays for itself — get a free read on yours. State basics: Georgia · Florida.
Quick answers
Does reaching MMI mean my workers' comp case is over? +
No. MMI means your doctor believes your condition has plateaued — not that you're healed and not that benefits automatically end. It triggers the impairment rating and reshapes which benefits you receive, and it's often when settlement talk begins.
Can I disagree with my MMI determination? +
Yes. MMI is a medical opinion, and opinions can be challenged — through your one-time change of physician, an independent medical examination, or litigation, depending on the state and posture of your claim.
