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Maximal Medical Improvement (MMI)

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Newsletter Articles
Guides Newsletter (2007) 12 (2): 1–3, 9-11.
Published: 01 March 2007
... figures were revised in the Errata to the Fifth Edition of the AMA Guides . Evaluators should note three key points from the AMA Guides: permanent impairment is based on findings at maximal medical improvement (MMI); motion in the spite must be abnormal to qualify for permanent impairment; and imaging...
Newsletter Articles
Guides Newsletter (2001) 6 (2): 1–3.
Published: 01 March 2001
... of medication needed to maintain maximal medical improvement (MMI). The ATS Guidelines contained a scoring system that was used to place the individual into one of six impairment classes. The Fifth Edition uses the same method of scoring the three clinical parameters and using the point score to determine which...
Newsletter Articles
Guides Newsletter (1999) 4 (1): 5.
Published: 01 January 1999
..., introduced a new approach, the Injury Model or Diagnosis-related estimates (DRE) Model. The Injury Model is different from other approaches in the AMA Guides because when the individual reaches Maximal Medical Improvement (MMI), the degree of persisting anatomic or physiologic loss is rated. In contrast...
Newsletter Articles
Guides Newsletter (1997) 2 (3): 6.
Published: 01 May 1997
... (a decreased incidence of asthma). Tobacco smoke is a lung irritant and frequently aggravates asthma. Someone who smokes, despite being told of its effect on her asthma, may not be at maximal medical improvement (MMI). People frequently continue to smoke despite adverse consequences and physician advice...
Newsletter Articles
Guides Newsletter (2003) 8 (4): 4–5.
Published: 01 July 2003
...Christopher R. Brigham, MD; James B. Talmage, MD Permanent impairment cannot be assessed until the patient is at maximum medical improvement (MMI), but the proper time to test following carpal tunnel release often is not clear. The AMA Guides to the Evaluation of Permanent Impairment ( AMA Guides...
Newsletter Articles
Guides Newsletter (2011) 16 (5): 5.
Published: 01 September 2011
... of these awards. House Bill 1698, Section 8.1b, Determination of permanent partial disability, applies to injuries that occur on or after September 1, 2011. Because permanent impairment is not assessed until the claimant has achieved maximal medical improvement (MMI)—which is often up to six months or longer...
Newsletter Articles
Guides Newsletter (2003) 8 (3): 6–10.
Published: 01 May 2003
... question relates to the issue of maximal medical improvement (MMI) for a work-related gradual onset injury. If the worker continues to have exposures that contribute to his injury and therefore his impairment, when is the worker at MMI? Answer The Glossary defines maximal medical improvement...
Newsletter Articles
Guides Newsletter (2020) 25 (6): 3–6.
Published: 01 November 2020
... industrial disabilities. © 2020 American Medical Association. All Rights Reserved. 2020 American Medical Association California Permanent Disability System Labor-disabling Pre-existing Disability Maximal Medical Improvement (MMI) Permanent Disability (PD) Retroactive Prophylactic Work...
Newsletter Articles
Guides Newsletter (2012) 17 (6): 10–11.
Published: 01 November 2012
... to assess causation and apportionment based on the facts presented, current science, and consistent with legal definitions of causation and apportionment as defined by the setting of the claim. As with other assessments, the rating is based on objective findings at maximal medical improvement (MMI...
Newsletter Articles
Guides Newsletter (2006) 11 (5): 4–6.
Published: 01 September 2006
... consistent with ulnar neuropathy) Assess causal relationship (consider potential causes listed in medical literature, specific case facts, and determine most probable cause in this case) Maximal Medical Improvement (MMI) Typically at least 1 year postsurgical release or nonoperative...
Newsletter Articles
Guides Newsletter (2018) 23 (3): 7–9.
Published: 01 May 2018
...Charles N. Brooks, MD; Christopher R. Brigham, MD Maximum medical improvement (MMI) and its multiple synonyms are important terms to understand because one cannot determine permanent impairment until a condition has resolved or reached a stable plateau with respect to improvement. Further, in many...
Newsletter Articles
Guides Newsletter (2003) 8 (3): 8–9.
Published: 01 May 2003
... disease. Maximal medical improvement (MMI) is discussed as follows: Exercise training programs, cessation of cigarette smoking, use of medications, and surgical procedures can reduce but not eliminate impairment due to CHD [cardiac heart disease]. Allow sufficient time before estimating permanent...
Newsletter Articles
Guides Newsletter (2013) 18 (6): 10–11.
Published: 01 November 2013
... of fifth toe. At maximal medical improvement (MMI) he complains of residual left forefoot discomfort. Examination revealed fusion of the first metatarsophalangeal joint with no active movement of the first interphalangeal joint, and minimal motion of second through fifth toe joints. What diagnosis...
Newsletter Articles
Guides Newsletter (2011) 16 (2): 9–11.
Published: 01 March 2011
... this “significant” surgery and elected to retire, hoping that diminished weight bearing would improve her symptoms, with the option to proceed with a TKR if her symptoms worsened. At maximal medical improvement (MMI), the claimant reported moderate left knee pain at rest, increasing to severe pain...
Newsletter Articles
Guides Newsletter (2005) 10 (1): 8–9.
Published: 01 January 2005
..., and Appropriate Use of the Guides , and the applicable chapter(s). You should obtain the applicable data as discussed in the Principles of Assessment section of each chapter and ensure that the data is reliable. Prior to assessing permanent impairment, determine if maximal medical improvement (MMI) has occurred...
Newsletter Articles
Guides Newsletter (2011) 16 (4): 13–15.
Published: 01 July 2011
... impairment. Answer : In performing an upper digestive tract impairment evaluation, you should provide the diagnosis or diagnoses, provide appropriate objective findings that verify an upper digestive tract disease, determine the etiology of that disease, assess maximal medical improvement (MMI...
Newsletter Articles
Guides Newsletter (2019) 24 (3): 10–13.
Published: 01 May 2019
...) Evaluation of AOMSI permanent impairment utilizing the AMA Guides requires the use of flexion and extension X rays performed at or after maximal medical improvement (MMI) has been established. To qualify for loss of motion segment integrity, measured translation or relative translation on radiographs must...
Newsletter Articles
Guides Newsletter (2009) 14 (1): 1–5.
Published: 01 January 2009
... the individual's condition is considered stationary (ie, at maximal medical improvement [MMI]) without consideration of possible future changes in that condition. Examples 17-3 and 17-4 in the Guides are helpful clinical vignettes that illustrate the difference between the Sixth and Fifth Editions in this regard...
Newsletter Articles
Guides Newsletter (2011) 16 (3): 5–8.
Published: 01 May 2011
... maximal medical improvement (MMI)? How difficult is it to maintain an individual at MMI, and what is needed to maintain those levels? What are the interferences in an individual's activities of daily living (ADLs) created by the impairing condition? For an individual who has undergone...
Newsletter Articles
Guides Newsletter (1999) 4 (1): 7–8.
Published: 01 January 1999
... the individual reaches Maximal Medical Improvement (MMI), the degree of anatomic and/or physiologic loss that persists is rated. In contrast, the Injury Model rates the severity of the original injury, not the degree of recovery. The philosophy is that it is difficult to quantify spinal loss. Recurrence...