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Traumatic Brain Injury Claims: Common Mistakes to Avoid in NSW

This article explains common mistakes to avoid in traumatic brain injury CTP claims in NSW, including delays in medical treatment, missing deadlines, and misclassifying injuries. It outlines practical steps to protect your claim and when to seek legal advice.

Current as at 19 June 2026

Traumatic brain injury claims in NSW: Key legal considerations

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 NSW's Compulsory Third Party (CTP) scheme. However, claimants often make errors that jeopardise their ability to secure compensation. This article explains the most common mistakes to avoid, the legal framework governing TBI claims, and steps to protect your entitlements.

Understanding TBI claims under NSW CTP laws

NSW CTP claims for traumatic brain injuries are governed by the Motor Accident Injuries Act 2017. Under this legislation, claimants may be eligible for:

  • Statutory benefits like weekly income payments and treatment costs
  • Compensation for long-term impairments
  • Lifetime care arrangements where applicable

However, the law distinguishes between 'threshold injuries' and more severe brain injuries. A TBI may qualify for compensation only if it meets the threshold injury criteria in the Motor Accident Guidelines. For example, a spinal nerve-root injury causing neurological signs may qualify, while radiculopathy requires specific clinical signs.

Common mistakes to avoid

  1. Delaying medical attention - Failing to seek immediate medical evaluation after a TBI can lead to missed diagnosis of serious conditions like concussions or intracranial haemorrhages. Early documentation is critical to establish a clear link between the accident and injury.
  1. Not preserving evidence - Important evidence includes:
  • Detailed medical records showing the progression of symptoms
  • Accident reports from police or witnesses
  • Photographs of the accident scene

a lack of these can weaken claims for long-term impairments.

  1. Missing the 52-week deadline - Under s 4.4 of the Motor Accident Injuries Act 2017, weekly benefits and treatment costs are generally limited after 52 weeks if the injury is a 'threshold injury'. This applies even if the TBI requires ongoing care.
  1. Confusing statutory benefits with damages - Statutory benefits are automatic for eligible injuries, while common law damages require proving fault and long-term impairment. Mixing these concepts can lead to incorrect expectations about compensation.

Practical steps to protect your claim

  • Seek medical attention immediately - Even if symptoms seem minor, a medical professional can document the injury and its effects.
  • Document all symptoms and treatment - Keep a journal of symptoms, medications, and how the injury impacts daily life.
  • Notify your insurer promptly - Delaying notification may affect your ability to claim benefits or dispute incorrect assessments.
  • Consider independent medical opinions - If your claim is disputed, a second opinion from a specialist can clarify the severity of your TBI.

When to seek legal advice

Disputes over TBI claims often arise when insurers challenge the severity of the injury or the link to the accident. Legal advice is particularly important if:

  • Your injury exceeds the threshold injury definition
  • You're facing a dispute over long-term care arrangements
  • You've missed a statutory deadline

Hypothetical example

Consider a cyclist who sustains a TBI after a collision. If they fail to seek medical attention for 48 hours, the insurer may argue the injury was not immediately apparent. This could jeopardise claims for long-term impairments, even if the TBI is severe.

Next steps

CTP claims for traumatic brain injuries depend on accurate documentation, timely action, and understanding the distinction between statutory benefits and damages. To discuss your circumstances, complete the quick, no obligation enquiry form.

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