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Medical Assessment Disputes in NSW CTP Claims: How SIRA Guides Resolution

This article explains how SIRA resolves medical assessment disputes in NSW CTP claims by assessing clinical evidence against statutory guidelines. It outlines the evidence required, steps to challenge insurer decisions, and the importance of meeting time limits. Claimants should seek legal advice if their medical assessment is disputed.

Current as at 19 June 2026

If your medical assessment is disputed during a NSW Compulsory Third Party (CTP) claim, understanding how SIRA evaluates disputes is critical. SIRA, the NSW government body overseeing motor accident claims, has specific rules for resolving conflicts between claimants and insurers over medical evidence. This article explains how SIRA assesses disputes, what evidence is needed, and steps to address disagreements under the Motor Accident Injuries Act 2017.

How SIRA Determines Validity of Medical Assessments

SIRA evaluates medical assessments based on clinical evidence and statutory guidelines. When an insurer disputes a claimant’s medical opinion, SIRA considers:

  • Clinical records: Detailed medical notes from doctors, including diagnosis dates, treatment plans, and progress reports.
  • Expert opinions: Reports from specialists confirming the injury’s severity and link to the accident.
  • Compliance with Motor Accident Guidelines: Whether the assessment aligns with SIRA’s published clinical standards for threshold injuries and long-term impairments.

SIRA does not replace medical professionals but assesses whether the evidence meets statutory thresholds. For example, if a claimant argues their soft-tissue injury meets the threshold under the Motor Accident Injuries Act 2017 s 3.11, SIRA will verify if the injury involves spinal nerve-root damage with neurological signs, as specified in the guidelines.

Evidence Required for a Medical Assessment Dispute

To challenge an insurer’s rejection of a medical assessment, claimants must provide:

  • Medical records: Full documentation from treating practitioners, including imaging reports and specialist referrals.
  • Accident details: Evidence linking the injury to the accident, such as police reports or witness statements.
  • Expert reports: Independent assessments confirming the injury’s impact, such as a vocational expert’s opinion on work capacity loss.
  • Communication with insurers: Copies of correspondence showing the insurer’s refusal to accept the assessment.

SIRA may request additional evidence if the initial submission is incomplete. For instance, if an insurer disputes a claimant’s claim for a 52-week injury, SIRA will assess whether the injury meets the ‘only injuries’ test under s 4.4 of the Act.

Steps to Resolve Medical Assessment Disputes

If your insurer disputes your medical assessment, follow these steps:

  1. Request a review: Submit a written objection to the insurer’s decision, citing specific sections of the Motor Accident Injuries Act and SIRA guidelines.
  2. Seek independent medical evidence: Obtain a second opinion from a registered medical practitioner to support your case.
  3. Engage SIRA’s dispute pathway: If the insurer refuses to reconsider, escalate the matter to SIRA’s Personal Injury Commission (PIC) for mediation.
  4. Consider legal advice: A solicitor can help draft formal submissions or challenge the insurer’s interpretation of the law.

SIRA’s PIC process allows claimants to challenge decisions, but it is not a guarantee of success. The outcome depends on the strength of the evidence and whether the dispute aligns with statutory criteria. For example, if an insurer argues a claimant’s injury does not meet the threshold, SIRA will assess whether the injury involves spinal nerve-root damage with neurological signs, as outlined in the Motor Accident Guidelines.

Time Limits and When to Seek Advice

Time is critical in medical assessment disputes. Under the Motor Accident Injuries Act 2017, claimants must notify insurers of injuries within 52 weeks of the accident. If the insurer disputes the assessment after this period, the claimant may lose access to statutory benefits like weekly payments. However, disputes over the validity of the assessment (not the timing) can still be resolved through SIRA’s process.

If your insurer refuses to accept your medical evidence or disputes the injury’s severity, seek legal advice promptly. A solicitor can help ensure your case meets SIRA’s evidentiary standards and statutory requirements.

Example: Resolving a Dispute Over Soft-Tissue Injury

Consider a claimant who sustained a soft-tissue injury in a car accident. The insurer disputes the injury’s validity, arguing it does not meet the threshold under s 3.11. The claimant submits medical records showing spinal nerve-root damage with neurological signs, as required by the Motor Accident Guidelines. SIRA reviews the evidence and determines the injury meets the threshold, leading to a revised assessment. This example illustrates how SIRA’s guidelines directly impact dispute outcomes.

Final Steps for Claimants

Medical assessment disputes in NSW CTP claims require careful navigation of SIRA’s rules. By gathering comprehensive evidence, understanding statutory thresholds, and following the correct procedural steps, claimants can challenge insurer decisions. However, the outcome depends on the specific facts of the case. Every claim depends on its own facts. To request contact about your circumstances, complete the quick, no obligation enquiry form.

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