US & International Resources

A curated collection of authoritative impairment, causation, and disability evaluation resources — supporting physicians, raters, attorneys, adjusters, and employers who work with the AMA Guides and related standards. Inclusion is informational and does not imply endorsement.

Partner

Causation Resources

Causation evaluation resources developed under the guidance of Christopher R. Brigham, MD, and colleagues.

Causation.comA purpose-built platform for structured causation review, with AI-supported tools (CausationScreen™ and CausationEvidence™) that help qualified professionals organize, review, and interpret event, exposure, and diagnosis relationships. Grounded in the Bradford Hill considerations and the AMA Guides tradition — final judgment always stays with the reviewer.causation.com OpenCausation.orgA free, noncommercial educational resource presenting a structured, evidence-based methodology for evaluating medical causation. Covers the fundamentals, the six-step method, the Bradford Hill considerations, legal standards, and worked examples — transparent, reproducible, and readable by anyone.opencausation.org
Standards

Guides & Publishers

AMA GuidesPublisher of the AMA Guides to the Evaluation of Permanent Impairment — the standard used by 40+ U.S. states and several countries.ama-assn.org ACOEMAmerican College of Occupational and Environmental Medicine — practice guidelines and occupational medicine resources.acoem.org
U.S.

Government & Regulatory

OWCPU.S. DOL Office of Workers’ Compensation Programs — administers federal programs including FECA and Longshore.dol.gov SSA Blue BookSocial Security Administration’s medical criteria for evaluating disability claims.ssa.gov VA Rating ScheduleThe VASRD schedule used for veterans’ disability compensation ratings.benefits.va.gov
Professional

Associations & Certification

IAIMEInternational Academy of Independent Medical Evaluators.aadep.org ABIMEAmerican Board of Independent Medical Examiners — home of the CIME credential.abime.org AAOSAmerican Academy of Orthopaedic Surgeons.aaos.org
Research

Research & Data

WCRIWorkers Compensation Research Institute — independent, nonpartisan research on workers’ compensation systems.wcrinet.org NCCINational Council on Compensation Insurance — rating and statistical data.ncci.com
Global

International Resources

Impairment and disability evaluation systems in other English-speaking jurisdictions. Many adapt or reference the AMA Guides.

Australia

SIRA (NSW)State Insurance Regulatory Authority — publishes the NSW permanent impairment guidelines adapted by other Australian jurisdictions.sira.nsw.gov.au ComcareAustralia’s federal work health, safety, and workers’ compensation authority.comcare.gov.au Safe Work AustraliaPublishes the Comparison of Workers’ Compensation Arrangements in Australia and New Zealand.safeworkaustralia.gov.au

New Zealand

ACCAccident Compensation Corporation — no-fault injury scheme using the AMA Guides with the ACC User Handbook to rate whole-person impairment.acc.co.nz

Canada

WSIB OntarioWorkplace Safety and Insurance Board — uses the Ontario Rating Schedule to determine non-economic loss (NEL) awards.wsib.ca AWCBCAssociation of Workers’ Compensation Boards of Canada — umbrella body for provincial and territorial boards.awcbc.org

United Kingdom

Industrial Injuries BenefitGOV.UK technical guidance on the UK “loss of faculty” disablement assessment scheme.gov.uk IIACIndustrial Injuries Advisory Council — independent scientific body on prescribed occupational diseases.gov.uk

Cross-Border Standards

WHO ICFInternational Classification of Functioning, Disability and Health — the WHO framework for describing functioning and disability.who.int