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Traumatic Brain Injury Claims: How NSW CTP Insurers Assess Your Case

This article explains how NSW CTP insurers assess traumatic brain injury claims, including factors like medical evidence, legal definitions, and time limits. It outlines steps to challenge adverse decisions and highlights the importance of medical records and legal advice.

Current as at 19 June 2026

Understanding How NSW CTP Insurers Evaluate Traumatic Brain Injury Claims

A threshold injury under the Motor Accident Injuries Act 2017 (NSW) includes a soft tissue injury and a psychological or psychiatric injury that is not a recognised psychiatric illness (adjustment disorder and acute stress disorder are the usual examples; s 1.6 and Motor Accident Guidelines Part 5).

Traumatic brain injuries (TBIs) are among the most serious injuries covered under New South Wales’ Compulsory Third Party (CTP) insurance scheme. Insurers assess claims based on medical evidence, legal definitions, and the specific terms of the Motor Accident Injuries Act 2017. This article explains what factors insurers consider, how to challenge adverse decisions, and what evidence is needed to support your claim.

Key Factors in TBI Claims

NSW CTP insurers evaluate TBIs by determining whether the injury meets the legal definition of a 'threshold injury' under the Motor Accident Guidelines. This includes assessing neurological signs, imaging results, and clinical findings. For example, a spinal nerve-root injury producing neurological signs (even without radiculopathy) may qualify as a soft-tissue injury under the guidelines.

Insurers also consider the type of TBI: mild (e.g., concussion), moderate, or severe. Severe TBIs typically result in long-term or permanent impairments, which may entitle claimants to weekly income payments, treatment benefits, or compensation for ongoing care. However, claims must demonstrate a direct link between the accident and the injury.

Proving a Traumatic Brain Injury

To support a TBI claim, you must provide:

  • Medical records from a registered medical practitioner, including scans (e.g., CT or MRI) and clinical notes.
  • Accident reports detailing the incident, such as police reports or witness statements.
  • Evidence of ongoing effects, like changes in cognitive function, memory loss, or physical symptoms.
  • Income records to establish financial loss from time off work.

A labelled hypothetical example: If a pedestrian suffered a concussion after being hit by a car, medical evidence showing symptoms like dizziness, confusion, and memory loss would support a claim. However, if the injury is classified as a 'threshold injury' under the guidelines, weekly benefits may be limited after 52 weeks.

Challenging Adverse Decisions

If an insurer denies or limits your claim, you can challenge the decision by:

  1. Requesting a review with the insurer, providing additional evidence.
  2. Seeking independent medical assessment to confirm the injury’s severity.
  3. Applying to the NSW Civil and Administrative Tribunal (NCAT) if the insurer refuses to reconsider.

Note: Insurers must provide a written explanation for denying claims. If they fail to follow the Motor Accident Injuries Act 2017, you may have grounds to dispute their decision.

Time Limits and Next Steps

You have 6 years from the accident date to make a CTP claim under NSW law. However, time limits for specific benefits (e.g., weekly payments) may apply. For example, treatment and care benefits typically last 52 weeks unless the injury is classified as a 'threshold injury' under the guidelines.

If you’re unsure whether your claim meets the criteria, seek advice from a legal professional or contact the State Insurance Regulatory Authority (SIRA) for guidance. Every claim depends on its own facts, and insurers may interpret rules differently.

Next Steps

CTP entitlements and deadlines can depend on the accident date, injury type, and claim history. To request contact about your circumstances, complete the quick, no obligation enquiry form.

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