IMEIndependent Medical Examination. A medical assessment performed by a doctor who is not the claimant's treating practitioner, engaged to provide an objective opinion on injury, diagnosis, treatment, work capacity, or impairment.LOILetter of Instruction. The document sent to the IME doctor by the referring party (insurer, solicitor, or employer) outlining the background of the case and the specific questions to be addressed in the report.AMSApproved Medical Specialist. In NSW, a doctor approved by the Personal Injury Commission to assess permanent impairment disputes under the workers' compensation or CTP schemes.AHPRAAustralian Health Practitioner Regulation Agency. The national body responsible for registering and regulating health practitioners across Australia. All IME doctors must hold current AHPRA registration.WPIWhole Person Impairment. A percentage rating that quantifies the degree of permanent impairment resulting from an injury. WPI assessments are used to determine eligibility for lump sum compensation payments.CTPCompulsory Third Party. Insurance that covers injuries sustained in motor vehicle accidents. Each state and territory has its own CTP scheme with distinct rules and benefit structures.SIRAState Insurance Regulatory Authority. The NSW regulator overseeing workers' compensation and CTP insurance schemes, responsible for setting guidelines, licensing insurers, and monitoring scheme performance.AMA GuidesAmerican Medical Association Guides to the Evaluation of Permanent Impairment. The reference text used in most Australian jurisdictions (with state-specific modifications) to assess and rate permanent impairment.Treating Doctor vs IME DoctorA treating doctor provides ongoing care and has a therapeutic relationship with the patient. An IME doctor is engaged independently to assess the patient's condition objectively and does not provide treatment.Permanent ImpairmentAn impairment that has stabilised and is unlikely to improve substantially with further treatment. A formal assessment of permanent impairment is typically required before a lump sum compensation claim can be determined.Maximum Medical Improvement (MMI)The point at which a claimant's condition has stabilised and is not expected to improve further with ongoing medical treatment. Reaching MMI is usually a prerequisite for a permanent impairment assessment.Fitness for DutyAn assessment of whether a worker is medically fit to perform the inherent requirements of their role, either fully or with modifications. Fitness for duty assessments are commonly requested by employers and insurers.Supplementary ReportAn additional report requested from an IME doctor after the initial examination, usually to address follow-up questions, review new medical evidence, or clarify opinions from the original report.Medicolegal ReportA formal medical report prepared for legal or insurance purposes. It addresses specific questions about a claimant's injuries, treatment, prognosis, and impairment, and may be used as evidence in legal proceedings.Expert WitnessA medical professional who provides expert opinion evidence in court or tribunal proceedings. The expert witness has a duty to the court to provide impartial, evidence-based opinions regardless of which party engaged them.