Medico-Legal Services
Impairment Assessments
Whole person impairment evaluations using AMA Guides, GEPIC, and state-based frameworks. Accredited assessors for workers' compensation, CTP, and personal injury claims across every Australian jurisdiction.
Overview
What Is a Whole Person Impairment Assessment?
A whole person impairment (WPI) assessment is a formal medical evaluation that measures the degree of permanent impairment resulting from an injury or condition. The assessment is expressed as a percentage and conducted using standardised methodologies such as the AMA Guides.
WPI assessments determine eligibility for compensation entitlements, common law damage thresholds, and lump sum payments. Different Australian jurisdictions require different editions of the AMA Guides and apply specific modifications.
Frameworks
Impairment Frameworks
AMA Guides 4th Edition
Used in NSW (workers' compensation under SIRA), South Australia, and other jurisdictions.
AMA Guides 5th Edition
Applied in NSW (CTP), Victoria, Queensland, and other jurisdictions with updated methodologies.
GEPIC
Guidelines for the Evaluation of Permanent Impairment in NSW CTP claims, based on AMA 5.
GEPI (Victoria)
Guide to the Evaluation of Psychiatric Impairment for Victorian workers' compensation and TAC claims.
Assessment Types
Types of Assessment
Whole Person Impairment (WPI)
Formal assessment of permanent impairment expressed as a percentage. Used to determine threshold eligibility for common law damages and lump sum compensation.
Permanent Impairment Assessment
Evaluation of whether an injury has reached maximum medical improvement and the resulting permanent impairment for claim resolution.
Psychiatric Impairment Assessment
Specialist psychiatric assessment using PIRS (Psychiatric Impairment Rating Scale) or relevant state-based methodology.
Multiple Injury Assessment
Combined assessment across multiple body systems using the Combined Values Chart methodology for complex multi-injury claims.
Threshold Assessment
Assessment to determine whether a claimant meets the impairment threshold required to access common law damages or additional compensation.
Reassessment / Review
Reassessment where a condition has deteriorated, new evidence is available, or a prior assessment is disputed.
Jurisdiction Coverage
NSW
- SIRA Workers Comp (AMA 4)
- CTP / GEPIC (AMA 5)
- icare
Victoria
- WorkSafe (AMA 5)
- TAC (AMA 5)
- GEPI (Psychiatric)
Queensland
- WorkCover (AMA 5)
- CTP (AMA 5)
Western Australia
- WorkCover WA (AMA 5)
- ICWA (AMA 5)
South Australia
- ReturnToWorkSA (AMA 4)
- CTP (AMA 5)
National
- Comcare (AMA 5)
- Military / DVA
- Superannuation / TPD
Process
Assessment Process
Matter Submitted
Provide claim details, jurisdiction, scheme, and the impairment framework required.
Assessor Matched
EWI matches your matter to an accredited impairment assessor with the relevant qualifications.
Assessment Conducted
Structured clinical assessment following the applicable impairment framework methodology.
WPI Calculated
Impairment ratings calculated using the relevant tables, combined values, and rounding rules.
Report Delivered
Quality-assured impairment report delivered with clear WPI rating and methodology explanation.
Standards
Assessment Quality
- Assessors trained and accredited in the relevant AMA Guides edition
- Compliance with jurisdiction-specific guidelines and modifications
- Transparent calculation methodology with table references
- Combined Values Chart correctly applied for multi-system injuries
- Quality review of all impairment calculations before delivery
- Reports structured for use in dispute resolution and court proceedings
All EWI impairment assessors hold the required accreditation for their jurisdiction and undertake ongoing professional development in impairment assessment methodology.
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Need an Impairment Assessment?
Submit your matter details, including the jurisdiction and scheme, and we'll match you with the right accredited assessor.
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