Legal Advice

Vehicle Modifications in CTP Claims: Understanding Insurer Decisions in NSW

NSW CTP insurers must assess vehicle modifications as medically necessary for claims. Evidence like medical reports and documentation of the modification's direct link to your injury are critical. If your claim is denied, you may dispute the decision through SIRA or seek legal advice.

Current as at 3 October 2026

How NSW CTP Insurers Assess Claims with Vehicle Modifications

If you've suffered a disabling injury in a motor accident and need vehicle modifications like hand controls or mobility aids, understanding how insurers evaluate your claim is critical. Under NSW's Compulsory Third Party (CTP) scheme, insurers must assess whether modifications are necessary, medically justified, and directly related to your injury. This article explains the legal framework, evidence required, and steps to challenge adverse decisions.

Key CTP Rules for Vehicle Modifications

NSW CTP insurers must consider modifications as part of the 'treatment and care benefits' under the Motor Accident Injuries Act 2017. According to SIRA guidelines, modifications must:

  • Be medically necessary to address your injury
  • Be directly related to the accident
  • Be reasonably required to restore mobility or independence

Insurers may reject claims where modifications are deemed excessive, not medically necessary, or unrelated to the injury. For example, a claimant seeking a customised wheelchair for a non-disabled person would likely be denied.

Evidence to Support Your Claim

To prove the necessity of vehicle modifications, you'll need:

  • Detailed medical reports from a specialist confirming the modification's medical necessity
  • Evidence of the modification's direct link to your injury (e.g., a fractured leg requiring a mobility aid)
  • Documentation of the modification's cost and suitability

Keep records of all correspondence with the insurer, including dates and responses. If the insurer requests an independent medical opinion, ensure your treating doctor provides a clear explanation of the modification's necessity.

Time Limits and Dispute Options

CTP insurers must respond to claims within 28 days of receiving all required documentation. If they deny your claim, you have 28 days to request a review. If the insurer still refuses to reconsider, you may:

  • Submit a formal dispute to SIRA
  • Seek mediation through the NSW Civil and Administrative Tribunal (NCAT)
  • Consult a solicitor for further action

Note that the 52-week statutory benefit limit applies to weekly income payments, but modifications are not subject to this cap if they are medically necessary.

When to Seek Legal Advice

Insurers often deny claims related to vehicle modifications by arguing the modification is 'not essential' or 'too costly'. If your claim is rejected, a solicitor can:

  • Challenge the insurer's interpretation of 'medical necessity'
  • Request an independent medical assessment
  • Help you navigate the dispute resolution process

A practical example: After a spinal injury, a claimant needed a hand control device to drive. The insurer denied the claim, arguing the modification was 'too expensive'. A solicitor could argue the modification was necessary for the claimant's mobility and not a luxury item.

Next Steps

CTP claims involving vehicle modifications require careful documentation and understanding of medical necessity. If you're unsure how an insurer's decision was reached, seek professional advice. Every claim depends on its own facts, and the right legal support can make a difference.

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