Understanding How NSW CTP Insurers Assess Pre-existing Injury Aggravation
Where a person's only injuries resulting from the accident are threshold injuries, weekly benefits and treatment and care generally cease after 52 weeks (ss 3.11 and 3.28).
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).
If a motor accident worsens a pre-existing medical condition, claimants must prove the aggravation to access compensation. NSW CTP insurers evaluate such claims using the Motor Accident Injuries Act 2017 and SIRA guidelines. This article explains the legal test for aggravation, evidence required, and steps to challenge a denial.
Legal Framework for Pre-existing Injury Aggravation
Under NSW CTP rules, insurers must determine whether the accident caused a new injury or worsened an existing one. The Motor Accident Injuries Act 2017 s 4.4 defines 'threshold injury' as a condition that meets specific medical criteria, including aggravation of a pre-existing condition. SIRA guidelines clarify that aggravation must be 'causally linked' to the accident, not merely coincidental.
Insurers assess whether the accident caused a 'new injury' or 'worsening of a pre-existing condition' by examining medical evidence. For example, if a claimant had a pre-existing back injury and the accident caused increased pain or functional loss, this may qualify as aggravation. However, insurers will not pay for injuries that existed before the accident unless they were worsened by the crash.
Factors Insurers Consider
- Medical Evidence: Specialist reports must show a direct link between the accident and the worsened condition. This includes pre-accident medical records, post-accident assessments, and evidence of functional decline.
- Causation: Insurers require proof that the accident caused the aggravation, not a pre-existing condition progressing naturally. For instance, if a claimant's pre-existing knee injury worsened due to a car accident, but the injury was already in a stable state before the crash, the insurer may deny the claim.
- Threshold Injury Criteria: Under the Motor Accident Guidelines, injuries must meet specific neurological or functional thresholds to qualify for benefits. Aggravation must result in a new impairment level or worsen an existing one beyond pre-accident limits.
Evidence to Support a Claim
Claimants should gather:
- Pre-accident medical records showing the existing condition
- Post-accident specialist reports linking the injury to the crash
- Evidence of functional decline (e.g., reduced mobility, increased pain)
- Witness statements or accident reports supporting the claim
For example, a claimant with a pre-existing herniated disc who develops new neurological symptoms after a collision would need a specialist to confirm the worsening condition.
Challenging a Denial
If an insurer denies a claim, claimants can:
- Request a review of the decision with supporting evidence
- Seek independent medical opinions to challenge the insurer's assessment
- Lodge a complaint with SIRA or the NSW Civil and Administrative Tribunal (NCAT)
Insurers must provide a written explanation for denials, including the medical reasoning. Claimants should not assume the denial is final without reviewing the evidence.
Time Limits and Dispute Options
CTP claims must be submitted within 52 weeks of the accident for certain benefits, but this does not apply to all types of claims. If a claim is denied, claimants can dispute the decision by:
- Submitting additional evidence
- Applying to the NSW Civil and Administrative Tribunal (NCAT) for a review
- Seeking legal advice if the claim involves complex medical or legal issues
When to Seek Legal Advice
Complex cases involving pre-existing injuries require specialist legal guidance. A solicitor can help:
- Navigate SIRA's claims process
- Challenge insurers' medical assessments
- Ensure all evidence is properly submitted
Claimants should act promptly, as delays can reduce the chances of a successful outcome. The legal test for aggravation is strict, and insurers will scrutinise both medical and factual evidence.
Next Steps
Understanding how NSW CTP insurers evaluate pre-existing injury aggravation requires careful analysis of medical records and causation. If you believe your claim has been denied unfairly, it is important to seek professional advice. Every claim depends on its own facts. To request contact about your circumstances, complete the quick, no obligation enquiry form.