Cranial Nerve Injury Workers Compensation NSW

Overview for NSW injured workers

Start with the dispute, not just the diagnosis

May be relevant when

The applicable test depends on the legal characterisation. A personal injury generally must arise out of or in the course of employment, with employment a substantial contributing factor; a disease or disease aggravation generally requires employment to be the main contributing factor.

Benefits to check

Medical expenses, weekly payments, suitable duties, treatment requests, WPI and any dispute notice already received.

Legal help is useful when

The insurer denies liability, refuses treatment, relies on an IME, reduces weekly payments or disputes permanent impairment.

How this affects your claim in practice

In a cranial nerve injury claim, the diagnosis is only the starting point. The records should connect neurologist and relevant ENT, ophthalmology, maxillofacial or speech pathology reports and examination identifying the exact cranial nerve and sensory or motor deficit with the worker's practical limits, including cognitive load, balance, driving, machinery, screen work, fatigue and pain tolerance and risk-sensitive duties where symptoms may affect safety. If the insurer disputes which cranial nerve is affected, the response should address that reason directly.

This information is general in nature and is not legal advice. You should obtain advice about your own circumstances.

Assessment source

NSW Guidelines for the Evaluation of Permanent Impairment, paras 1.8-1.12: NSW Guidelines control the assessment method and AMA5 is used only where adopted and not modified.
NSW Guidelines para 1.12: AMA5 Chapter 18 pain is excluded; chronic pain is assessed through the underlying diagnosed condition, while CRPS is assessed under the relevant NSW method.
NSW Guidelines para 1.15: assessment should usually wait until maximum medical improvement, meaning the condition is stable and unlikely to change substantially in the next year.
NSW Guidelines Chapter 5 applies AMA5 Chapter 13 subject to NSW modifications. Paragraph 5.4 requires supported consciousness, cognition, communication and neurologically based emotional or behavioural impairments to be evaluated and combined without double-rating.
NSW Guidelines para 5.9: a TBI cerebral assessment requires a severe or high-energy head impact and at least one significant medically verified Glasgow Coma Scale abnormality, post-traumatic amnesia period or intracranial CT/MRI pathology.
NSW Guidelines paras 5.2-5.3: spinal cord injury uses AMA5 Chapter 15 Table 15-6, while peripheral nerves use the relevant upper-extremity, lower-extremity or spine provisions.

What injuries or conditions may be assessed?

Cranial nerve injury can affect smell or taste, vision and eye movement, facial sensation, facial movement, hearing or balance, swallowing, shoulder elevation or tongue movement depending on the nerve involved.

The report must identify the particular cranial nerve and whether the loss is sensory, motor or both.
Vision and hearing use separate NSW methods and should not be folded into a generic cranial nerve percentage.

Symptoms and findings that matter

The cranial nerve injury examination should identify the function in issue: cognition or communication, gait or coordination, cranial-nerve function, seizure recurrence, sensory loss, motor loss or another defined system.

Objective findings for cranial nerve injury may include anatomically localised sensory loss, measurable weakness, reflex change, muscle wasting, cranial-nerve signs or repeatable functional testing.

Imaging, neuropsychological testing and EMG/NCS can support a cranial nerve injury assessment, but each result must match the history, clinical examination and anatomical pattern.

What investigations are usually relevant

Investigations for cranial nerve injury may include ambulance, emergency and hospital records, including Glasgow Coma Scale, post-traumatic amnesia and acute neurological observations where relevant and neurologist, rehabilitation physician, neuropsychologist, speech pathologist, vestibular, urology or other specialty reports matched to the function in issue. Each result should answer a defined clinical question and be read with the examination, diagnosis and history.

CT/MRI, neuropsychological testing, vestibular testing or EMG/NCS interpreted with the clinical examination rather than in isolation.
Functional records showing memory, communication, community independence, self-care, seizure safety, gait, sensory or motor consequences.

How WPI is assessed for this body part

The applicable cranial nerve table or NSW modification depends on the nerve and function affected.

NSW paragraph 5.13 modifies AMA5 Table 13-11 for trigeminal sensory loss and requires bilateral trigeminal injuries to be assessed on each side and combined.

NSW paragraph 5.14 directs spinal accessory nerve loss to the upper-limb method for trapezius and permits an additional sternomastoid component.

Table and value examples

Total loss of smell or taste

Maximum 5% WPI for total loss of either sense

Partial symptoms do not automatically receive the maximum.

Source: NSW Guidelines para 5.11

Spinal accessory nerve loss to trapezius

Maximum 10% upper extremity impairment

This is UEI, not automatically 10% WPI.

Source: NSW Guidelines para 5.14

Additional sternomastoid loss

Maximum 3% upper extremity impairment

The additional value requires actual sternomastoid loss of use.

Source: NSW Guidelines para 5.14

Method illustration

This is a non-numeric illustration of the assessment sequence. It does not predict a WPI result.

Accepted condition and findings: Cranial nerve injury can affect smell or taste, vision and eye movement, facial sensation, facial movement, hearing or balance, swallowing, shoulder elevation or tongue movement depending on the nerve involved. The cranial nerve injury examination should identify the function in issue: cognition or communication, gait or coordination, cranial-nerve function, seizure recurrence, sensory loss, motor loss or another defined system.
Method to apply: The applicable cranial nerve table or NSW modification depends on the nerve and function affected.
Why no percentage can be assumed: Facial pain, altered taste, dizziness or shoulder pain alone does not identify the injured cranial nerve or its permanent deficit.

What usually does not increase WPI

Facial pain, altered taste, dizziness or shoulder pain alone does not identify the injured cranial nerve or its permanent deficit.

A nerve label without a sensory or motor examination does not establish the table class.

A UEI maximum must not be reported as the same numerical WPI value.

Evidence checklist

The records for cranial nerve injury should include specialist report identifying the lesion, affected function, applicable table or class and maximum medical improvement and early incident and hospital records, imaging and objective test results relevant to the claimed condition. They are most useful when the diagnosis, examination and practical restrictions are consistent.

Neuropsychological, speech, OT, gait, vestibular, sensory or motor findings that translate the condition into daily function.
Medication, rehabilitation and longitudinal records showing stability, recurrence and consistency.
Work and home evidence about memory, communication, supervision, balance, sensation, strength, driving and safety limits.

How this injury commonly happens at work

Work-related cranial nerve injury can arise through head or facial trauma affecting a cranial nerve and traction, compression or fracture near a cranial nerve pathway. The chronology should identify the actual task or event and when symptoms or function changed.

Work-related cranial nerve injury can arise through an accepted surgical or treatment complication. The chronology should record the actual task or event and the point at which symptoms or function changed.

Common insurer disputes

For cranial nerve injury, an insurer may dispute which cranial nerve is affected and whether the claimed loss is objectively demonstrated and permanent. The written decision should be answered with evidence directed to those reasons.

Further disputes about cranial nerve injury may concern whether vision or hearing should use its separate NSW method and whether a regional impairment value has been mistaken for WPI. The decision notice should identify which issue is relied on and the evidence said to support it.

Treatment and surgery issues

Depending on the diagnosis and treating opinion, management of cranial nerve injury may involve specialist neurological and function-specific treatment or rehabilitation where clinically supported. The request should explain the expected functional benefit and its connection to the accepted injury.

Weekly payments and work capacity

Capacity evidence for cranial nerve injury should address cognitive load, balance, driving, machinery, screen work, fatigue and pain tolerance and risk-sensitive duties where symptoms may affect safety. Proposed duties must be sustainable for the proposed hours, not merely possible once.

For cranial nerve injury, capacity evidence should address graded duties based on treating restrictions and weekly payments where functional limits are disputed. The question is whether those activities can be performed safely, reliably and for the proposed hours—not whether a task can be attempted once.

How NSW Work Injury Claim can help

For cranial nerve injury, a claim review can help to organise incident, medical and symptom evidence and separate treatment, capacity and impairment issues. The purpose is to identify the precise decision and the evidence needed for the next available step, not to promise an outcome.

For cranial nerve injury, a claim review can help to identify gaps in IME or insurer reasoning and consider dispute options where the evidence supports them. The purpose is to identify the precise decision and the evidence needed for the next available step, not to promise an outcome.

Common questions about cranial nerve injury claims

How can work cause or aggravate cranial nerve injury?

For cranial nerve injury, the relevant work history may include head or facial trauma affecting a cranial nerve, traction, compression or fracture near a cranial nerve pathway, and an accepted surgical or treatment complication. A claim still depends on the actual chronology and medical evidence. The records should identify what changed, when symptoms began or worsened, and how the diagnosed condition affects the worker's duties.

How is WPI assessed for cranial nerve injury?

For cranial nerve injury, the applicable cranial nerve table or NSW modification depends on the nerve and function affected. The cranial nerve injury examination should identify the function in issue: cognition or communication, gait or coordination, cranial-nerve function, seizure recurrence, sensory loss, motor loss or another defined system. The assessor must apply the NSW Guidelines to the accepted, stable condition; the diagnosis or an operation does not by itself determine a percentage.

Which records are most useful for a cranial nerve injury assessment?

A cranial nerve injury assessment commonly needs specialist report identifying the lesion, affected function, applicable table or class and maximum medical improvement, early incident and hospital records, imaging and objective test results relevant to the claimed condition, neuropsychological, speech, OT, gait, vestibular, sensory or motor findings that translate the condition into daily function, and medication, rehabilitation and longitudinal records showing stability, recurrence and consistency. Those records are most useful when they describe the same diagnosis, examination findings, treatment history and practical work restrictions.

What does an insurer commonly dispute about cranial nerve injury?

For cranial nerve injury, common issues include which cranial nerve is affected, whether the claimed loss is objectively demonstrated and permanent, and whether vision or hearing should use its separate NSW method. The response should address the insurer's stated reason with the relevant chronology, clinical findings, investigations and duties evidence rather than relying on the diagnosis alone.

How can cranial nerve injury affect weekly payments and suitable duties?

Capacity evidence for cranial nerve injury may need to address cognitive load, balance, driving, machinery, screen work, fatigue and pain tolerance, risk-sensitive duties where symptoms may affect safety, and graded duties based on treating restrictions. A certificate should describe what the worker can do safely and sustainably. Proposed duties should then be checked against those restrictions and the real demands of the job.

Does cranial nerve injury automatically receive a fixed WPI percentage?

No. For cranial nerve injury, one verified example is total loss of smell or taste: Maximum 5% WPI for total loss of either sense, under NSW Guidelines para 5.11. That value applies only when its stated criteria are met. Facial pain, altered taste, dizziness or shoulder pain alone does not identify the injured cranial nerve or its permanent deficit.

Request a calm claim position review

If you have received an insurer decision or you are unsure how your injury evidence fits together, we can help you identify the issue, organise the documents and consider the next step. Where ILARS funding is approved, eligible legal costs and necessary disbursements may be covered.

Request a claim review Call (02) 7233 3661

Cranial nerve injury workers compensation NSW

Key legal and assessment sources