Impairment Rating Reviews

What Is an Impairment Rating?

Impairment is defined in the American Medical Association Guides to the Evaluation of Permanent Impairment, Sixth Edition (AMA Guides) as “a significant deviation, loss, or loss of use of any body structure or body function in an individual with a health condition, disorder, or disease.” Impairment ratings are quantitative assessments provided by physicians – typically ranging from 0 to 100 – used to measure the severity of physical or mental impairments resulting from injury, illness, or medical conditions.

An impairment rating is rendered once an individual reaches maximum medical improvement and serves as a basis for determining the appropriate compensation or benefits owed to the injured individual. Insurance companies, legal professionals, and other stakeholders use impairment ratings as key evidence in negotiations and legal proceedings to reach settlement agreements.

Why Many Impairment Ratings Are Inaccurate

Impairment ratings can be inaccurate in many instances for a variety of reasons, including:

• Incorrect application of AMA Guides
• Lack of training of the medical professionals conducting the rating
• Inadequate medical documentation
• Bias that can influence the rating
• Subjectivity in pain levels or reported functional limitations
• Inconsistent examinations across different examiners
• Failure to consider all relevant factors such as comorbidities or secondary impairments

Who Benefits from CMRS IRR Services

Impairment Rating Reviews touch the full spectrum of workers’ compensation and disability insurance participants, plus the legal and medical-expert communities that support claims resolution. CMRS IRR services are built for:

• Workers’ Compensation Carriers – The primary buyers of IRR services – challenging inflated treating provider ratings, verifying physician-generated ratings before benefit adjustments, and supporting UR, PPD claim resolution, hearings, and mediations.
• Third-Party Administrators (TPAs) – TPAs managing self-insured workers’ compensation programs, with particular demand from large-volume TPAs handling multi-state claim portfolios that span multiple AMA Guides editions and state-specific rating frameworks.
• Self-Insured Employers – Large corporations, municipalities, healthcare systems, and public universities with significant workers’ compensation exposure – using IRR to control PPD indemnity costs and support benefit determinations on high-value permanent disability claims.
• Defense Attorneys – Workers’ compensation defense counsel and personal injury defense attorneys challenging plaintiff-submitted ratings, preparing cross-examination of plaintiff rating physicians, and supporting hearing testimony on rating methodology compliance.
• Plaintiff Attorneys – Plaintiff workers’ compensation and disability attorneys retaining IRR experts to challenge carrier-requested ratings that understate true impairment – supporting claims for higher PPD benefits and settlement values.
• Long-Term Disability Carriers – Group LTD carriers using IRR-verified AMA Guides ratings in benefit determinations, own-occ to any-occ transition assessments, and ERISA appellate proceedings.
• State Workers’ Comp Boards & Administrative Agencies – State agencies evaluating impairment ratings submitted in administrative proceedings, and training administrative law judges and hearing officers on AMA Guides methodology.
• Medicare Set-Aside & Life Care Plan Firms – MSA and LCP analysts using impairment rating data as clinical context for pharmaceutical and medical cost projections – and to ensure underlying impairment determinations are clinically supportable before incorporation into settlement documentation.

The CMRS Impairment Rating Review Process

At CMRS, our Impairment Rating Reviews (IRRs) are designed to provide clear, defensible, and clinically supported evaluations that withstand regulatory and legal scrutiny. Our structured review process combines experienced physician reviewers, advanced record analysis tools, and detailed AMA Guides methodology verification to ensure accuracy and consistency.

1. Jurisdiction & Guideline Verification

CMRS first determines the correct AMA Guides edition or state-specific guides, along with jurisdictional requirements applicable to the claim. This ensures the impairment rating is reviewed under the legally correct standard for the state or federal system involved.

2. Comprehensive Medical Record Review

Our physician reviewers analyze the impairment rating report together with the complete supporting medical record, including diagnostic studies, operative reports, examination findings, and treating provider documentation. We identify missing information, inconsistencies, and documentation issues that may impact the validity of the rating.

3. Detailed Methodology Analysis

CMRS performs a step-by-step review of how the original impairment rating was calculated. Each component is verified against the applicable AMA Guides tables, figures, formulas, and methodology requirements to identify calculation errors, incorrect table selection, improper apportionment, or unsupported conclusions.

4. Corrected Impairment Rating Calculation

When errors are identified, CMRS calculates the corrected impairment rating using the proper methodology and supporting clinical evidence. Our reports clearly explain how the corrected rating was determined and provide the necessary guideline references to support the conclusion.

5. Clear, Defensible Reporting

CMRS delivers organized, easy-to-follow reports designed for claims handling, litigation, settlement evaluation, and appeals. Each report includes a concise summary of findings, supporting clinical rationale, and detailed methodology analysis presented in a format that can stand on its own during audits, hearings, or legal review.

Why CMRS?

• Experienced physician reviewers with extensive impairment rating expertise
• Systematic record analysis to improve consistency, efficiency, and accuracy
• Detailed AMA Guides verification and methodology review
• Reports designed to withstand adversarial and legal scrutiny
• Responsive customer service and industry-leading turnaround times
• National expertise across all jurisdictions and federal disability systems

CMRS IRR reports provide more than a simple second opinion – they deliver a comprehensive clinical and methodological analysis that helps clients make confident claims and settlement decisions.