By Bronwyn Ackland, Partner and Poppy Scaife, Paralegal

The decision in Allianz Australia Insurance Limited v Bell [2025] NSWCA 187 marks development in the application of judicial review, within the context of motor accident injury claims. It provides insight into the interaction between medical causation assessments and legal determinations, highlighting the difficulty in resolving disputes involving psychological injury and statutory entitlements.

This is important, as it clarifies the limits of the role of the Review Panel of the Personal Injury Commission (PIC), the approach to causation in cases involving multiple interrelating events and the obligations of procedural fairness.

Background

Mr Bell made a claim against Allianz Australia Insurance Limited (“Allianz”) for statutory benefits and damages under the MAI Act. He sought compensation in relation to both physical and psychological injuries, diagnosed as post-traumatic stress disorder (“PTSD”) and Major Depressive Disorder.

The central dispute between Bell and Allianz concerned the psychological injuries. While Allianz accepted that Bell had suffered a physical injury caused by the motorcycle falling onto his leg, it was disputed that his psychological conditions were caused by a “motor accident”, within the meaning of the MAI Act. The insurer argued that the psychiatric harm was instead the result of separate or subsequent events, such as Bell’s fear of ‘motorcycle gangs’ and his anxieties about retribution from reporting to police, which did not fall within the statutory definition of “motor accident.”

The matter proceeded through several stages of medical and judicial assessment:

• A Medical Assessor determined that Bell’s psychiatric conditions did not result from the motor accident;
• A Delegate of the PIC President dismissed Bell’s review application, affirming the Assessor’s decision;
• Bell challenged that outcome in the Supreme Court and Basten AJ set aside the Delegate’s decision, remitted the matter for redetermination.
• On reconsideration, a Review Panel of the PIC determined Bell’s PTSD, and depression did arise from the motor accident and assessed his Whole Person Impairment (WPI) at 19%, exceeding the statutory threshold for non-economic loss;
• Allianz sought judicial review of the Review Panel’s decision, asserting jurisdictional error and error of law. Lonergan J rejected all grounds and dismissed Allianz’s application; and
• Allianz appealed to the Court of Appeal on five grounds, challenging the process and the substance of the Review Panel’s reasoning.

The Court of Appeal’s decision, by a majority (Payne JA and Price AJA, Ball JA dissenting), dismissed the appeal and upheld the Review Panel’s findings.

Factual Background

The facts of the case were uncommon, involving a combination of theft, confrontation and perceived intimidation.

On 11 July 2018, Bell left his Harley-Davidson motorcycle parked outside nearby premises. While inside, he observed a man attempting to steal his motorcycle. Bell rushed to intervene.

As he confronted the thief, the man pushed the motorcycle towards him. The foot peg struck Bell’s right leg, causing a laceration. This incident gave rise to Bell’s physical injury.

Another motorcycle arrived on the scene and collected the thief as a passenger and turned aggressively in Bell’s direction. Bell perceived this as a threatening gesture and subsequently formed the belief the men were members of an ‘motorcycle gang’ and feared harm or retaliation.

Although the initial injury was relatively minor, the incident left Bell with significant psychological symptoms. He began experiencing intrusive recollections, nightmares and anxiety, leading to a diagnosis of PTSD and Major Depressive Disorder. These conditions ultimately, rendered him unable to work and contributed to ongoing impairment.

A dispute arose about the causal link between these psychological conditions and the statutory concept of “motor accident.” Allianz contended Bell’s psychiatric injury stemmed from fears separate to the physical accident. Bell maintained the events were part of a single traumatic episode and that both physical and psychological injuries, arose out of that incident.

Issues

The central issue before the Court of Appeal was whether the Review Panel had properly discharged its statutory function in assessing causation. Specifically:

1. Causation and Event Characterisation

• Was the Review Panel entitled to treat the entire sequence of events, the attempted theft, the motorcycle striking Bell, and the subsequent intimidation, as a single causative incident; or
• Should the Panel have separated the events, determined which specific incident gave rise to the psychological injuries, and left it for the court to decide whether those events fell within the statutory definition of “motor accident”?

2. Procedural Fairness

• Did the Review Panel deny Allianz procedural fairness by failing to confront Bell with inconsistencies in his reporting history. Particularly his changing account of ‘motorcycle gang’ involvement; and
• Was Allianz deprived of the opportunity to make submissions on those inconsistencies?

3. Application of Motor Accident Guidelines

• Did the Review Panel fail to comply with clause 6.41 of the Guidelines, requiring inconsistencies in clinical findings to be addressed; and
• Was there a constructive failure to exercise jurisdiction due to a failure to grapple with inconsistencies?

4. Adequacy of Reasons

• Did the Panel fail to expose its reasoning process, by not identifying the precise events constituting the motor accident and not explaining why it accepted Bell’s account despite inconsistencies?

5. Failure to Respond to Submissions

• Did the Panel fail to engage with Allianz’s submissions that Bell’s psychiatric injuries arose from events outside the scope of a motor accident?

These issues reflected Allianz’s five formal grounds of appeal.

Decision

The Court of Appeal, Payne JA and Price AJA; Ball JA dissenting, dismissed the appeal.

Ground 1

Procedural Fairness

• Allianz argued that the Review Panel should have confronted Bell with inconsistencies in his evidence about outlaw motorcycle gangs and invited submissions.
• The Court held the Panel was not required to act as an adversarial tribunal. Instead, its role was to conduct a fair medical assessment, not to cross-examine the claimant or resolve contested evidential narratives.
• No practical injustice was demonstrated. Even if Allianz had been allowed to make submissions, the outcome would not have been different.
• Accordingly, there was no denial of procedural fairness.

Ground 2

Motor Accident Guidelines

• Allianz contended that clause 6.41 required the Panel to resolve inconsistencies in Bell’s reporting history.
• The Court held that clause 6.41 applies only to inconsistencies in clinical findings relevant to medical diagnosis.
• Differences in Bell’s description of events, such as motorcycle gang involvement, were irrelevant to the clinical assessment of PTSD and depression.
• Thus, no error was established.

Ground 3

Causation and Single Event Analysis

• Majority (Payne JA, Price AJA):
• The Review Panel was entitled to treat the entire incident as a single traumatic event.
• Events occurring closely in time and space should not be artificially separated.
• The Panel’s role was to assess medical causation; it was for courts to decide whether those events legally constituted a “motor accident.”
• No jurisdictional error arose from the Panel’s approach.
• Dissent (Ball JA):
• The Panel failed in its duty by not distinguishing between two distinct events: (i) the motorcycle falling on Bell, and (ii) the intimidation threats.
• By conflating them, the Panel effectively determined a legal question, whether the first event fell within the statutory definition, which it was not entitled to do.
• He considered this a jurisdictional error and would have allowed the appeal.

Ground 4

Adequacy of Reasons

• Allianz submitted that the Panel’s reasons were conclusory and failed to explain its reasoning path.
• The Court held that reasons must be read fairly and as a whole.
• The Panel had explained that:
  1. Bell had no prior psychological conditions;
  2. His PTSD and depression emerged after the incident;
  3. The conditions were consistent with the nature of the traumatic event;
  4. There were no competing causes.
• This met the standard set out in Wingfoot Australia Partners Pty Ltd v Kocak, which requires sufficient reasoning to allow a court to see whether an error of law had been made.
• The Panel was not required to resolve every inconsistency or address every submission.

Ground 5

Failure to Address Submissions

• Allianz argued the Panel ignored its submissions that the psychiatric injuries were caused by events outside the scope of “motor accident.”
• The Court held that the Panel’s statutory function was to determine medical causation, not to adjudicate whether an event legally qualified as a motor accident.
• The Panel dealt with the substance of the medical issues before it. Any further determination about the legal scope of a motor accident was for a court or the PIC.
• Accordingly, this ground failed.

Outcome

• Appeal dismissed. Allianz was ordered to pay Bell’s costs.
• The decision confirmed the Review Panel acted within its statutory function and that no jurisdictional error or denial of procedural fairness occurred.

Relevance

This case clarifies the limited role of the Review Panel under the Motor Accident Injuries Act 2017, reinforcing that it is not the Panel’s function to determine justiciable issues such as whether an event constitutes a “motor accident.” The decision in Allianz v Bell highlights the importance of distinguishing between medical assessment functions and legal adjudication, particularly where questions of statutory interpretation or causation arise. It confirms that procedural fairness obligations do not extend to matters outside the Panel’s role, where legal or factual disputes exist about the nature of an incident, but these remain for determination by the Personal Injury Commission (PIC) or the courts. Importantly, the presence of a binding impairment assessment does not preclude further legal argument on threshold issues, and where such arguments succeed, reassessment under section 7.24(1) of the MAIA may be required to align medical findings with judicial conclusions. By confirming that psychological injuries arising from a combination of events can be treated as a single causative incident, the case also provides important guidance for future disputes under the MAI Act. Ultimately, Bell demonstrates the balance between administrative medical assessments and judicial oversight. While Panels must act fairly and provide adequate reasons, their role is confined to medical questions, with broader legal issues remaining with the courts.