How SIRA assesses treatment and rehab for multi-vehicle pile-up 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).
- When multiple vehicles are involved in a single crash, NSW authorities must determine which insurer is responsible for compensation. SIRA’s guidelines state that treatment and rehabilitation planning must align with the
- nature of the injury* and
- medical evidence* to qualify for benefits. For example, if a passenger in a multi-vehicle pile-up suffers a soft-tissue injury requiring physiotherapy, the insurer must approve the treatment plan as part of the claim.
Key differences in rehab planning for multi-vehicle accidents
Unlike single-vehicle claims, multi-vehicle pile-ups often involve complex liability assessments. SIRA requires claimants to provide:
- A detailed medical report linking the injury to the accident
- Evidence of treatment costs (e.g., receipts, therapist notes)
- Documentation of how the injury affects daily activities
In a 2023 case, a cyclist involved in a three-vehicle pile-up in Auburn received weekly income benefits for 52 weeks because their injuries met the threshold injury criteria under the Motor Accident Injuries Act 2017. However, rehabilitation planning was delayed due to disputes over which insurer was liable for long-term care.
Handling claims with multiple insurers
Multi-vehicle pile-ups can involve up to 10 insurers, as seen in a 2025 report from the NSW Motor Accident Claims Unit. SIRA’s rules state that claimants must:
- Identify all involved insurers through police reports
- Submit claims to each insurer separately
- Provide evidence that the injury resulted from the specific accident
Insurers may dispute claims if they argue the injury could have occurred in a different incident. Claimants should request a written explanation for any denied benefits and seek independent medical opinions if needed.
Time limits and when to seek advice
The 52-week statutory benefit period under the Motor Accident Injuries Act 2017 applies only if the injury is a threshold injury. For non-threshold injuries, weekly benefits continue until recovery. However, rehabilitation planning must begin within 28 days of the accident, as per SIRA’s 2024 guidelines.
If an insurer delays approval of treatment or disputes the need for rehabilitation, claimants should:
- Request a written timeline for decision-making
- Seek legal advice if benefits are denied without justification
- Document all communication with insurers
Practical steps for claimants in Auburn
To support a treatment and rehab claim after a multi-vehicle pile-up:
- Visit a registered medical practitioner for a full assessment
- Keep records of all treatment costs and appointments
- Obtain a police report detailing the accident
- Submit claims to all involved insurers within 28 days
When to seek independent legal advice
Complex multi-vehicle claims often require legal assistance to:
- Navigate disputes over liability
- Challenge denied claims
- Ensure rehabilitation planning aligns with SIRA guidelines
If you’re unsure whether your treatment plan meets SIRA’s requirements, contact a legal professional. General information cannot determine whether a claim is available in an individual case.
Every claim depends on its own facts. To request contact about your circumstances, complete the quick, no obligation enquiry form.