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 complex regional pain syndrome (crps) claim, the diagnosis is only the starting point. The records should connect records from more than one examining doctor for CRPS type 1 and observed sensory, vasomotor, sweating/oedema and motor/trophic signs with the worker's practical limits, including tolerance for touch, temperature, repetitive use, protective sensation and reliable hand function. If the insurer disputes whether the NSW diagnostic criteria are met, 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.
- NSW Guidelines Chapter 17: CRPS uses the NSW diagnostic and extremity-assessment method; AMA5 Chapter 18 pain is excluded.
What injuries or conditions may be assessed?
Upper limb CRPS can follow fracture, surgery, nerve injury or other accepted trauma and may involve disproportionate pain with sensory, vasomotor, sweating/oedema and motor or trophic changes.
- CRPS type 1 does not require a confirmed nerve lesion; CRPS type 2 follows a recognised nerve injury.
- The diagnosis should be distinguished from ordinary post-injury pain, stiffness, disuse and an isolated peripheral nerve lesion.
Symptoms and findings that matter
The assessment needs consistent signs across the recognised CRPS domains rather than pain description alone.
Specialist observations over time, side-to-side comparison and treatment records are important because signs may fluctuate.
NSW excludes a generic AMA5 Chapter 18 pain rating, so CRPS must use the applicable extremity method.
What investigations are usually relevant
Investigations for upper limb complex regional pain syndrome (crps) 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
CRPS type 1 requires the NSW diagnostic criteria, at least one year since injury, confirmation by more than one examining doctor and exclusion of a better explanation. Type 2 also requires a recognised nerve lesion.
For CRPS type 1, permitted movement and sensory values are combined. For type 2, permitted movement, sensory and motor values are combined.
The combined upper-extremity value converts through AMA5 Table 16-3. A separate pain rating under AMA5 Chapter 18 is not available in NSW workers compensation.
Table and value examples
Upper-limb CRPS calculation
Combine permitted movement with sensory impairment, and motor impairment for CRPS type 2, then convert UEI through AMA5 Table 16-3The diagnosis must first satisfy the NSW criteria. No separate AMA5 Chapter 18 pain percentage is added.
Source: NSW Guidelines Chapter 17 and para 2.21
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 CRPS using the NSW extremity method
Assumed facts: After the NSW diagnostic requirements are met, the assumed examination produces 7% upper-extremity impairment for movement loss and 30% upper-extremity impairment for the permitted sensory component.
Method: The Combined Values Chart combines 30% and 7% to 35% upper-extremity impairment. No additional AMA5 Chapter 18 pain percentage is added.
Illustrative outcome: AMA5 Table 16-3 converts 35% upper-extremity impairment to 21% WPI. Diagnosis, duration and measurable findings must first satisfy the NSW CRPS rules. This paraphrased illustration is not an estimate for any individual claim.
Source: NSW Guidelines paras 1.12, 2.21 and Chapter 17; AMA5 Table 16-3
What usually does not increase WPI
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 complex regional pain syndrome (crps) 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 complex regional pain syndrome (crps) can arise through CRPS following an accepted fracture, surgery, crush or nerve injury and persistent regional signs after the original upper-limb trauma. The chronology should identify the actual task or event and when symptoms or function changed.
Common insurer disputes
For upper limb complex regional pain syndrome (crps), an insurer may dispute whether the NSW diagnostic criteria are met and whether another condition better explains the signs. The written decision should be answered with evidence directed to those reasons.
Further disputes about upper limb complex regional pain syndrome (crps) may concern whether type 1 or type 2 applies and whether an impermissible Chapter 18 pain value has been added. 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 complex regional pain syndrome (crps) may involve multidisciplinary pain and rehabilitation care where supported and graded functional restoration and management of the underlying accepted condition. 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 complex regional pain syndrome (crps) should address tolerance for touch, temperature, repetitive use, protective sensation and reliable hand function. Proposed duties must be sustainable for the proposed hours, not merely possible once.
How NSW Work Injury Claim can help
For upper limb complex regional pain syndrome (crps), 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 complex regional pain syndrome (crps), 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 complex regional pain syndrome (crps) claims
How can work cause or aggravate upper limb complex regional pain syndrome (CRPS)?
For upper limb complex regional pain syndrome (CRPS), the relevant work history may include CRPS following an accepted fracture, surgery, crush or nerve injury and persistent regional signs after the original upper-limb trauma. 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 complex regional pain syndrome (CRPS)?
For upper limb complex regional pain syndrome (CRPS), CRPS type 1 requires the NSW diagnostic criteria, at least one year since injury, confirmation by more than one examining doctor and exclusion of a better explanation. Type 2 also requires a recognised nerve lesion. The assessment needs consistent signs across the recognised CRPS domains rather than pain description alone. 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 complex regional pain syndrome (CRPS) assessment?
An upper limb complex regional pain syndrome (CRPS) 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 complex regional pain syndrome (CRPS)?
For upper limb complex regional pain syndrome (CRPS), common issues include whether the NSW diagnostic criteria are met, whether another condition better explains the signs, and whether type 1 or type 2 applies. 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 complex regional pain syndrome (CRPS) affect weekly payments and suitable duties?
Capacity evidence for upper limb complex regional pain syndrome (CRPS) may need to address tolerance for touch, temperature, repetitive use, protective sensation and reliable hand function. 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 upper limb complex regional pain syndrome (CRPS) automatically receive a fixed WPI percentage?
No. For upper limb complex regional pain syndrome (CRPS), one verified example is upper-limb crps calculation: Combine permitted movement with sensory impairment, and motor impairment for CRPS type 2, then convert UEI through AMA5 Table 16-3, under NSW Guidelines Chapter 17 and para 2.21. That value applies only when its stated criteria are met. Pain, tenderness, weakness complaints or an imaging label without a stable measurable impairment.
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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.