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Treatment Provider Disputes in NSW CTP Claims: Evidence and Records to Keep

This guide explains how to resolve treatment provider disputes in NSW CTP claims by maintaining medical records, meeting SIRA evidentiary standards, and understanding time limits. Proper documentation is essential to prove treatment costs are justified under the Motor Accident Injuries Act 2017.

Current as at 17 October 2026

When an insurer disputes or limits approved treatment costs in a NSW Compulsory Third Party (CTP) claim, injured parties must provide clear evidence to support their case. This guide explains what records to keep, how to document treatment disputes, and how SIRA guidelines apply to CTP claims. Understanding the evidentiary standards is critical to resolving disputes over treatment costs under the Motor Accident Injuries Act 2017.

What Evidence is Needed for Treatment Provider Disputes?

Insurers may challenge treatment costs by arguing the care was unnecessary, excessive, or not aligned with medical guidelines. To counter this, claimants must provide:

  • Medical records showing the treatment was medically necessary, including diagnosis notes, treatment plans, and progress reports
  • Invoice details with itemized costs, including dates, quantities, and medical practitioner signatures
  • Clinical guidelines from SIRA or the Australian Health Practitioner Regulation Agency (AHPRA) that support the treatment
  • Witness statements from healthcare professionals confirming the treatment's necessity
  • Communication records with insurers showing the treatment was approved before the dispute arose

How to Maintain Medical Records for CTP Claims

Proper documentation is essential to prove the treatment's relevance to the accident. Key records to preserve include:

  • Accident reports from police or traffic authorities
  • Medical imaging (X-rays, MRIs) showing injury-related conditions
  • Care plans outlining how the treatment addresses the injury
  • Progress notes tracking improvements or setbacks
  • Correspondence with insurers about treatment approvals or rejections

SIRA guidelines emphasize that evidence must directly link the treatment to the accident. For example, if a claimant seeks physiotherapy for a soft tissue injury, records must show the injury resulted from the motor accident, not a pre-existing condition.

SIRA Guidelines for Evidentiary Standards

SIRA's Making a Motor Accident Claim page states: "All claims must be supported by medical evidence showing a direct link between the injury and the accident." This means:

  • Spinal nerve-root injuries must meet the threshold injury criteria in the Motor Accident Guidelines
  • Weekly income payments require proof of lost earnings and medical evidence of ongoing impairment
  • Dispute resolution must reference SIRA's What You Can Claim guidelines to show entitlement to treatment costs

Time Limits and Dispute Resolution

CTP claims must be resolved within 52 weeks for threshold injuries, after which benefits are generally limited. If a dispute over treatment costs persists, claimants can:

  1. Request a review through the Personal Injury Commission (PIC) by submitting fresh evidence
  2. Seek independent medical opinions to challenge the insurer's assessment
  3. Escalate to the NSW Civil and Administrative Tribunal (NCAT) if the dispute involves complex medical or legal issues

The PIC's Medical Dispute Resolution Pathway outlines that while claimants can challenge decisions, a successful outcome depends on meeting evidentiary thresholds. A dispute does not automatically result in a changed decision.

Practical Example of a Treatment Dispute

Imagine a claimant who sustained a soft tissue injury in a car accident. The insurer disputes physiotherapy costs, arguing the treatment is "non-essential." To counter this, the claimant must:

  • Provide a medical report stating the physiotherapy is necessary to treat the injury
  • Show the treatment aligns with SIRA's
  • Motor Accident Guidelines* for soft tissue injuries
  • Demonstrate the injury resulted from the accident, not a pre-existing condition

When to Seek Legal Advice

If an insurer refuses to approve treatment or disputes costs despite proper documentation, claimants should consult a solicitor. Legal advice can help:

  • Challenge the insurer's interpretation of SIRA guidelines
  • Navigate the PIC's medical dispute review process
  • Prepare evidence for NCAT hearings

Time limits and procedural requirements mean prompt action is essential. Every claim depends on its own facts. To request contact about your circumstances, complete the quick, no obligation enquiry form.

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