Overview for NSW injured workers
Start with the dispute, not just the diagnosis
May be relevant when
Benefits to check
Legal help is useful when
How this affects your claim in practice
In an upper limb nerve injury claim, the diagnosis is only the starting point. The records should connect sensory mapping and motor testing for the named nerve and EMG/NCS matched to the clinical distribution with the worker's practical limits, including protective sensation, dexterity, grip, wrist or finger control and safe tool use. If the insurer disputes whether the lesion is peripheral nerve or cervical nerve root, the response should address that reason directly.
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 para 1.24: the effect on activities of daily living must not be used to increase or reduce an upper-extremity impairment calculated under the applicable upper-limb method.
- NSW Guidelines paras 1.26 and 2.8: values are rounded at each conversion stage; digit impairment converts to hand impairment, hand and other regional values convert to upper-extremity impairment, and AMA5 Table 16-3 converts upper-extremity impairment to WPI.
- NSW Guidelines paras 2.5 and 2.20: active movement is measured with a goniometer or inclinometer, passive movement is recorded for clinical comparison only, unreliable readings should be repeated, and the uninjured opposite limb may provide the worker's normal baseline.
- NSW Guidelines paras 2.8-2.13: values within one joint are added, same-limb regional values must be expressed in a common unit before combination, a deficit caused solely by a peripheral nerve lesion is not also rated as abnormal movement, and strength is used only in rare permitted cases.
- NSW Guidelines paras 2.14-2.21: NSW modifies the shoulder, biceps, impingement, joint-surface fracture, epicondylitis and CRPS methods in AMA5 Chapter 16.
- NSW Guidelines para 2.4: maximum upper extremity impairment is 60% WPI, equivalent to amputation through the shoulder.
What injuries or conditions may be assessed?
Upper limb nerve injuries can involve the median, ulnar, radial, musculocutaneous, axillary or digital nerves, or a more proximal brachial plexus lesion.
- The file should identify the affected nerve, anatomical level and whether the deficit is sensory, motor or both.
- A peripheral nerve lesion should be separated from cervical radiculopathy because the assessment methods and clinical patterns differ.
Symptoms and findings that matter
Recognised sensory loss in the nerve distribution and measurable motor weakness can contribute to the assessment.
Two-point discrimination is relevant to digital sensory loss, while reflex change is more likely to support a nerve-root problem than an isolated distal nerve lesion.
EMG or nerve conduction evidence can support the diagnosis but should match the examination and functional pattern.
What investigations are usually relevant
Investigations for upper limb nerve injury may include contemporaneous GP, specialist, physiotherapy or hand-therapy records identifying the exact diagnosis and progression to maximum medical improvement and ultrasound, MRI, X-ray, CT, operation reports or arthroplasty records where they explain tendon, labral, joint, fracture or surgical findings. Each result should answer a defined clinical question and be read with the examination, diagnosis and history.
- Nerve conduction studies or EMG where clinically relevant, interpreted with the sensory and motor examination rather than used alone.
- Repeat active movement measurements and a clear note of whether pain, guarding or inconsistency affected the examination.
- Duties evidence describing overhead reaching, lifting, pushing, pulling, gripping, keyboard work, tool use and forearm rotation where relevant.
How WPI is assessed for this body part
Upper-limb peripheral nerve impairment uses AMA5 Tables 16-10 and 16-11 to grade sensory and motor deficit, then applies each grade to the maximum value for the named nerve in Table 16-15.
The sensory and motor upper-extremity values are combined, not simply added, before Table 16-3 converts the result to WPI.
Abnormal movement caused solely by that nerve lesion is not rated a second time. Strength outside the named motor method is not added to duplicate the deficit.
A digital nerve lesion uses the separate digit sensory method and conversion tables.
Table and value examples
Maximum upper extremity impairment
60% WPIThis is the upper extremity maximum, not the expected rating for ordinary shoulder, elbow, wrist or hand claims.
Source: NSW Guidelines para 2.4
Worked assessment illustrations
These examples paraphrase the assessment reasoning in the source material. They explain method only and are not predicted outcomes.
Illustration 1
Upper limb nerve injury: partial median nerve sensory and motor deficit
Assumed facts: Assume the upper limb nerve injury file identifies a named median nerve lesion whose sensory and motor examination matches the anatomical level and electrodiagnostic evidence. A clinically consistent median nerve lesion is graded at 30% sensory deficit and 59% motor deficit. The assumed maximum values for the affected nerve are 39% upper-extremity impairment for sensation and 10% for motor function.
Method: For this upper limb nerve injury illustration, The sensory component is 30% x 39% = 12% upper-extremity impairment after rounding. The motor component is 59% x 10% = 6%. The Combined Values Chart combines 12% and 6% to 17% upper-extremity impairment.
Illustrative outcome: This shows how the relevant upper limb nerve injury findings move through the upper-limb conversion process. AMA5 Table 16-3 converts 17% upper-extremity impairment to 10% WPI. Motion loss caused solely by the same nerve lesion is not rated again. This paraphrased illustration is not an estimate for any individual claim.
Source: NSW Guidelines paras 1.26 and 2.8-2.10; AMA5 Tables 16-10, 16-11, 16-15 and 16-3
Illustration 2
Upper limb nerve injury: partial sensory loss in one digital nerve
Assumed facts: For comparison within the upper limb nerve injury page, assume a separate distal digital nerve lesion is measured by reproducible static two-point discrimination. Static two-point discrimination is 8 mm along the full length of the ulnar digital nerve of the ring finger. The assumed examination classifies this as partial, rather than total, sensory loss.
Method: For this upper limb nerve injury illustration, Using AMA5 Tables 16-5 to 16-7, the assumed deficit produces 10% ring-finger impairment. The digit value converts to 1% hand impairment, then 1% upper-extremity impairment and 1% WPI, with rounding at each stage.
Illustrative outcome: This shows how the relevant upper limb nerve injury findings move through the upper-limb conversion process. The assessment follows the digital sensory method; a complaint of numbness without reproducible two-point discrimination does not produce the same calculation. This paraphrased illustration is not an estimate for any individual claim.
Source: NSW Guidelines paras 1.26 and 2.8-2.10; AMA5 Tables 16-5, 16-6, 16-7, 16-2 and 16-3
What usually does not increase WPI
Pins and needles, grip complaints or an abnormal test result alone should not be rated without a clinically consistent nerve distribution and measurable deficit.
Pain, tenderness, weakness complaints or an imaging label without a stable measurable impairment.
Passive movement loss used as though it were active movement impairment.
Grip or other strength loss used to duplicate pain, restricted movement, deformity or nerve loss.
An activities-of-daily-living adjustment added to or subtracted from the calculated upper-extremity value.
The same functional loss counted once under a nerve method and again as restricted movement.
Evidence checklist
The records for upper limb nerve injury should include the accepted injury description and any dispute notice identifying the body part and diagnosis and repeat active range-of-motion measurements and opposite-side comparison where appropriate. They are most useful when the diagnosis, examination and practical restrictions are consistent.
- Imaging, operative reports and treatment records for the actual tendon, joint, fracture or arthroplasty condition.
- Sensory mapping, motor testing, static two-point discrimination or electrodiagnostic evidence where a nerve lesion is alleged.
- Work-duties and therapy records explaining the practical movement or nerve function affected.
How this injury commonly happens at work
Work-related upper limb nerve injury can arise through laceration, traction, fracture or dislocation affecting a named nerve and compression at the wrist, elbow, shoulder or plexus. The chronology should identify the actual task or event and when symptoms or function changed.
Work-related upper limb nerve injury can arise through surgical or crush injury causing sensory or motor loss. The chronology should record the actual task or event and the point at which symptoms or function changed.
Common insurer disputes
For upper limb nerve injury, an insurer may dispute whether the lesion is peripheral nerve or cervical nerve root and whether sensory and motor grades are supported. The written decision should be answered with evidence directed to those reasons.
Further disputes about upper limb nerve injury may concern whether an abnormal test matches function and whether movement or strength has been double-counted. 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 upper limb nerve injury may involve decompression, repair, grafting, splinting and nerve rehabilitation where supported. The request should explain the expected functional benefit and its connection to the accepted injury.
Weekly payments and work capacity
Capacity evidence for upper limb nerve injury should address protective sensation, dexterity, grip, wrist or finger control and safe tool use. Proposed duties must be sustainable for the proposed hours, not merely possible once.
How NSW Work Injury Claim can help
For upper limb nerve injury, a claim review can help to separate diagnosis, work exposure and capacity evidence and test suitable duties against actual hand, wrist, elbow or shoulder demands. The purpose is to identify the precise decision and the evidence needed for the next available step, not to promise an outcome.
For upper limb nerve injury, a claim review can help to review treatment denial reasons and IME assumptions and plan WPI or dispute steps where appropriate. 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 upper limb nerve injury claims
How can work cause or aggravate upper limb nerve injury?
For upper limb nerve injury, the relevant work history may include laceration, traction, fracture or dislocation affecting a named nerve, compression at the wrist, elbow, shoulder or plexus, and surgical or crush injury causing sensory or motor loss. 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 upper limb nerve injury?
For upper limb nerve injury, upper-limb peripheral nerve impairment uses AMA5 Tables 16-10 and 16-11 to grade sensory and motor deficit, then applies each grade to the maximum value for the named nerve in Table 16-15. Recognised sensory loss in the nerve distribution and measurable motor weakness can contribute to the assessment. 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 an upper limb nerve injury assessment?
An upper limb nerve injury assessment commonly needs the accepted injury description and any dispute notice identifying the body part and diagnosis, repeat active range-of-motion measurements and opposite-side comparison where appropriate, imaging, operative reports and treatment records for the actual tendon, joint, fracture or arthroplasty condition, and sensory mapping, motor testing, static two-point discrimination or electrodiagnostic evidence where a nerve lesion is alleged. 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 upper limb nerve injury?
For upper limb nerve injury, common issues include whether the lesion is peripheral nerve or cervical nerve root, whether sensory and motor grades are supported, and whether an abnormal test matches function. 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 upper limb nerve injury affect weekly payments and suitable duties?
Capacity evidence for upper limb nerve injury may need to address protective sensation, dexterity, grip, wrist or finger control and safe tool use. 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.
What does not establish WPI for upper limb nerve injury by itself?
For upper limb nerve injury, pins and needles, grip complaints or an abnormal test result alone should not be rated without a clinically consistent nerve distribution and measurable deficit. WPI depends on the accepted injury, objective findings and the method required by the NSW Guidelines after the condition has stabilised.
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.