What MMI actually means
Maximum medical improvement (some states say "permanent and stationary") is a medical judgment that your condition has plateaued — further treatment may maintain you, but it isn't expected to substantially improve you. Three things about it surprise almost everyone:
- MMI is not recovery. You can be at MMI in constant pain, on permanent restrictions, still needing care. It means stable, not well.
- MMI is an opinion, not a fact. A doctor declares it — and doctors can be wrong, early, or pressured. Opinions can be disputed.
- MMI doesn't end medical care. Maintenance treatment for a stabilized injury remains part of the claim (until and unless a settlement says otherwise).
What changes the day you hit MMI
- 1
Your temporary checks change
Temporary disability pays while you're healing; MMI ends "healing" as a legal status. TD stops or converts to permanent-disability payments (California PD, Texas IIBs, and so on). Budget for this transition — it's abrupt, and it's the moment insurers move fastest.
- 2
Someone measures what's permanent
A doctor — often a QME, AME, IME, or designated doctor — examines you and writes the impairment report: what's permanently lost, in percentages.
- 3
The rating becomes money
Your impairment percentage runs through your state's formula — weeks per point, adjusted for age, occupation, or wage-earning capacity depending on the state — and produces the permanent disability value at the heart of any settlement.
- 4
Settlement season opens
With a rating on paper, both sides can finally price the claim — which is why offers tend to appear shortly after MMI, and why the readiness checklist matters right now.
How ratings actually work
Most states rate impairment using standardized medical guides (commonly the AMA Guides), which assign percentages to measured losses: degrees of motion, strength deficits, nerve damage confirmed by testing, surgical outcomes. Three practical truths:
- Measurements beat descriptions. "Shoulder flexion 110 of 180 degrees" rates; "shoulder hurts" doesn't. This is why honest, full effort at the rating exam — and honest reporting of your bad days — matters so much.
- Small percentages are real money. Every point is weeks of benefits (three weeks per point in Texas; formula-driven everywhere). A rating dispute over "just a few percent" is often a dispute over thousands of dollars.
- Ratings compound with restrictions. The percentage prices the impairment; permanent work restrictions price your future. Both belong in the final math, and settlement talks that mention only the rating are leaving out half the story.
Apportionment assigns part of your impairment to non-work causes — age, old injuries, arthritis — and subtracts it from what's paid. Some apportionment is legitimate; a lot is aggressive. If your report apportions heavily to a condition that never bothered you before the injury, that's a disputable opinion, not a settled fact.
Disagreeing — with MMI, or with the rating
Both are opinions, and every state has machinery for challenging them:
- "I'm not at MMI — I'm still improving." Second opinions, treating-doctor rebuttals, and the medical-legal exam process address premature MMI calls. Evidence of active improvement (therapy gains, pending surgery) is the strongest argument.
- "The rating is too low." Rebuttal reports, supplemental exams, depositions of the evaluator, and in some states replacement panels. Timelines are short — in Texas, rating disputes have famously strict windows — so disagree quickly, in writing.
- "The apportionment is wrong." The fight is medical: records showing the pre-existing condition was silent, functional evidence of your before-versus-after. This is core Medical Visit Blueprint™ territory, and core attorney territory too.
A rating dispute is one of the strongest signals in our decision helper — the stakes-per-point math is exactly where professional help pays for itself.
Frequently asked questions
With MMI and your rating understood, you're ready for the conversation they lead to — the settlement.