What should be checked before relying on a WPI figure?
Check maximum medical improvement, the body area, objective findings, the NSW Guideline chapter and any NSW modification before relying on a percentage.
Can this page calculate your percentage?
No. WPI depends on an assessor, maximum medical improvement, objective findings and the NSW Guidelines. This page is general information only.
Permanent impairment assessment
How permanent impairment is assessed for Spinal cord injury and neurological dysfunction
Spinal cord injury assessment is different from ordinary back pain, neck pain or single nerve-root compression. It may involve corticospinal or cauda equina signs, upper or lower limb function, gait and station, bladder, bowel, sexual function and respiratory consequences, with careful attention to overlap and double counting.
What injuries can happen to this body part?
- Spinal cord contusion, compression, incomplete cord injury or myelopathy after trauma
- Cauda equina syndrome with bowel, bladder, saddle sensory or lower limb motor/sensory findings
- Bilateral nerve root or lumbosacral plexus injury causing neurogenic bladder, bowel or sexual dysfunction
- Cord-related gait, balance, spasticity, weakness, sensory loss or respiratory consequences
- Spinal fracture, disc, infection or surgical complication with cord or cauda equina involvement
Symptoms and findings that matter
- Level and completeness of spinal cord injury
- Motor and sensory function, reflexes, tone, spasticity, gait and station
- Bladder, bowel or sexual dysfunction where neurologically caused
- Upper or lower limb function and respiratory function where affected by the neurological injury
- Overlap with spine structural impairment and whether double counting is avoided
What investigations are usually relevant?
- Treating specialist report and final impairment assessment at maximum medical improvement
- Imaging, pathology, audiology, ophthalmology, respiratory, nerve or functional testing that fits the body system
- Operative reports, discharge summaries, rehabilitation records and objective clinical measurements where relevant
How WPI is assessed for this body part
- Spinal cord injury assessment is different from ordinary back pain, neck pain or single nerve-root compression. It may involve corticospinal or cauda equina signs, upper or lower limb function, gait and station, bladder, bowel, sexual function and respiratory consequences, with careful attention to overlap and double counting.
- Assessment source: NSW Guidelines Chapters 4 and 5. Spinal cord injuries are assessed through the AMA5 spinal cord method as adopted by NSW, with bowel, bladder and sexual-function consequences requiring objective neurological evidence.
- The assessor should explain maximum medical improvement, the body-system chapter, the method selected, any NSW modification, and why the objective findings fit that method.
How movement affects the assessment
- Spine ROM is not the key issue for spinal cord injury WPI. The important question is neurological function and whether any corresponding spine DRE impairment is also to be considered.
- Walking limitation from cord injury is different from pain-limited walking after a musculoskeletal injury.
NSW spinal cord, cauda equina and neurogenic function rules
Spinal cord injury methodSpinal cord injuries are assessed using the AMA5 spine chapter spinal cord method as adopted by NSW, then combined with the corresponding DRE spinal impairment where applicable.
Bowel/bladder/sexual dysfunctionFor spinal cord, cauda equina, bilateral nerve root or lumbosacral plexus injury, bowel, bladder and sexual-function issues require objective evidence of the neurological injury.
Sexual function cautionLoss of sexual function is not assessed without other objective neurological findings. It is not simply rated as an ADL complaint.
Cord versus nerve rootSpinal cord/corticospinal injury is different from single nerve-root compression or peripheral nerve injury and should not be described as ordinary sciatica.
NSW nervous system assessment rules
Brain and central nervous systemCerebral functions are considered by domains such as consciousness/awareness, cognition, communication, emotional/behavioural change, movement and cranial nerve findings.
Peripheral nervesPeripheral nervous system impairment is assessed through the relevant upper extremity, lower extremity or spine method rather than as a vague neurological label.
Do not double-rateThe assessor should be specific and avoid rating the same functional loss under overlapping cognitive, behavioural, musculoskeletal or nerve categories.
Objective evidenceStable clinical findings, specialist examination and relevant testing matter. Symptoms by themselves may affect capacity but may not establish WPI.
NSW radiculopathy criteria, in practical terms
Criteria countThe NSW Guidelines generally require two or more criteria, with at least one major criterion, before radiculopathy is concluded.
Reflex, motor or sensory findingsLoss or asymmetry of reflexes, anatomically localised weakness, or reproducible sensory impairment can be relevant when they fit the nerve root distribution.
Nerve tension, wasting and imagingPositive nerve root tension, muscle wasting/atrophy, and imaging consistent with the clinical signs can also be relevant.
Pain aloneRadicular pain or sensory symptoms that follow an anatomical pathway but cannot be verified by neurological findings do not alone constitute radiculopathy.
Practical WPI examples
- A worker with spinal cord dysfunction may need both spine and nervous-system issues considered, but not counted twice for the same impairment.
- Bladder or bowel symptoms should be supported by specialist evidence connecting them to the neurological injury.
- Sexual-function complaints after spinal injury should not be rated unless objective cord, cauda equina, bilateral nerve root or lumbosacral plexus evidence supports the connection.
- A worker with radicular leg pain from a single lumbar nerve root is not the same as a worker with spinal cord or cauda equina injury.
Evidence checklist
- A clear diagnosis and the body area being assessed
- Records showing the condition has reached maximum medical improvement, if that is the issue
- Specialist reports, imaging reports and treating notes relied on by the assessor
- Objective findings on examination, not only symptoms described by the injured person
- A work and treatment chronology explaining the injury, treatment, surgery and recovery path
- Any previous injury, degeneration, congenital issue or non-work cause that needs apportionment considered
- MRI/CT reports
- Neurosurgeon or neurologist reports
- Rehabilitation physician records
- Urology or bowel/bladder studies where relevant
- Sexual-function specialist evidence where relevant
- Functional assessments, gait assessment and equipment records
What usually does not increase WPI
- Assuming a scan result automatically gives a WPI percentage
- Confusing pain, disability or inability to work with permanent impairment
- Ignoring maximum medical improvement before arranging an assessment
- Using an AMA5 table without checking whether the NSW Guidelines modify or replace it
- Double counting the same impairment through two methods when the Guidelines require one method
- Treating spinal cord injury as an ordinary DRE back-pain page
- Ignoring bowel, bladder, sexual-function, gait or respiratory evidence where clinically connected
- Calling single nerve-root symptoms spinal cord injury
- Rating sexual dysfunction without objective neurological findings
Assessment source
Assessment source: Assessment source: NSW Guidelines Chapters 4 and 5. Spinal cord injuries are assessed through the AMA5 spinal cord method as adopted by NSW, with bowel, bladder and sexual-function consequences requiring objective neurological evidence.
This section is source-backed general information. It is not a WPI assessment and is not legal advice.
- SIRA NSW Workers Compensation Guidelines for the Evaluation of Permanent Impairment: Source for the NSW assessment framework, MMI, AMA5 adoption, NSW modifications and exclusions.
- SIRA nervous system chapter: Source for nervous system assessment concepts including brain, spinal cord and peripheral nerve impairment.
Related injury and claim pages
- Common injury evidence hub
- Work injury claims NSW
- Claim process
- Compensation and entitlements
- Ask about an impairment issue
- NSW Injury Claim Evidence, Documents and Templates - This library helps injured people organise incident, medical, income, correspondence and daily-impact records into a clear working file, without presenting any checklist or template as an official form.
- NSW Injury Claims by Location - NSW Injury Claims accepts enquiries from across NSW. The claim pathway depends on how the injury happened, while phone, online and electronic document handling can make an initial enquiry possible without creating a false impression of premises in every region.
- Hearing Loss WPI Assessment NSW - Hearing and vision permanent impairment assessment guide with NSW Guideline source notes.
Need a practical claim check?
If an impairment percentage, medical assessment or insurer decision is affecting your NSW injury claim, send the decision or report for a practical review. This is general information only and does not guarantee any result.
Request a free claim checkAssessment scope for Bladder, Bowel and Sexual Function Neuro WPI Assessment
The assessment scope for Bladder, Bowel and Sexual Function Neuro WPI Assessment should be stated precisely before any percentage is considered. The file should identify whether that label describes the primary diagnosed condition, a symptom of another injury, a regional overview or one component of a broader impairment. Findings from another body area or diagnosis should not be transferred without explanation. The report should connect the stated condition to the correct NSW Guideline chapter, objective findings, treatment history and any permitted combination or apportionment method. This distinction is particularly important where similar page labels cover different clinical questions.
- Confirm the diagnosis and body area being assessed as Bladder, Bowel and Sexual Function Neuro
- Separate condition-specific findings from overlapping symptoms or injuries in another body area
- Check that the selected NSW Guideline chapter and method match the condition actually assessed
- Explain any combination, apportionment or exclusion rather than relying on the page label alone
Clinical boundary for this WPI guide
This guide is confined to bladder, bowel and sexual-function consequences attributed to neurological injury. Evidence should identify the diagnosed mechanism, baseline function, investigations, treatment and specific stable limitation. It is not a substitute for assessing all motor and sensory effects of a spinal-cord injury. Urology, colorectal, sexual-health and neurological records may address different aspects, and duplicated impairment must be avoided.
- Document baseline and post-injury bladder, bowel and sexual function separately
- Keep urodynamic, continence, colorectal, neurological and treatment records where relevant
- Identify the neurological mechanism rather than relying on symptoms alone
- Separate autonomic consequences from the broader motor and sensory spinal-cord assessment
Start with maximum medical improvement
Permanent impairment should generally be assessed when the condition is stable and unlikely to change substantially in the next year. Treatment, surgery and rehabilitation history may affect whether the timing is appropriate.
Use the NSW Guidelines first
The NSW Guidelines adopt AMA5 in many areas, but NSW modifications prevail. Do not assume an AMA5 table applies without checking the NSW chapter and any public SIRA clarification.
Keep the assessment practical
A useful assessment file separates diagnosis, objective findings, surgery history, work capacity issues, apportionment questions and the body-area method used by the assessor.
Ask about an impairment issueDocuments and records
Injury evidence to organise early
The useful records depend on how the injury happened, when symptoms were recorded and how treatment or work capacity changed.
- Date, location and short description of the injury event
- Medical certificates, reports, scans, treatment records or hospital documents
- Employer, insurer, police, incident or venue records where relevant
- Photos, witness details, dashcam or other supporting material if available
- Income, superannuation, work capacity or leave records where relevant
- Letters, emails, claim numbers and decisions already received
Common questions
Injury evidence questions
Short general answers only. The right next step depends on the facts, dates and documents.
Is WPI the same as being unable to work?
No. WPI is a medical impairment measure. Work capacity, weekly payments, damages, treatment disputes and TPD issues are separate questions, although the evidence may overlap.
Does pain alone create a WPI percentage?
Not by itself. NSW workers compensation excludes AMA5 Chapter 18 on pain. Chronic pain is assessed through the underlying diagnosed condition where the Guidelines permit it.
Can secondary psychological symptoms be added to physical WPI?
In NSW workers compensation, secondary psychiatric or psychological impairment is not assessed as permanent impairment. Primary psychological impairment is assessed separately and is not combined with physical WPI.
Injury pathway enquiry
Not sure which claim type matches the injury?
Start with how the injury happened, what medical records exist and how work or daily activity has changed. The same injury can sit in different pathways.