Pain and permanent impairment
Chronic pain and CRPS in NSW CTP claims
Persistent pain can be disabling after a motor accident, but NSW CTP does not award a separate WPI percentage simply because pain is severe or long-lasting. Clause 6.38 prohibits the AMA4 Pain chapter. Pain is generally included in the impairment for the injured body system. CRPS is different: it has a specific Part 6 diagnostic threshold and type-specific impairment method.
Accident mechanism and diagnosis
How can this injury happen in a motor accident?
Ongoing pain from an identified injury
Fracture, nerve injury, joint damage, surgery or organ trauma may leave pain that is considered within the applicable body-system rating.
Neuropathic pain
A spinal root, peripheral nerve or central injury can cause burning, electric, sensory or motor symptoms that use the relevant neurological method.
Complex regional pain syndrome
CRPS may follow fracture, crush, surgery or nerve injury and requires the specified autonomic, trophic, sensory and movement findings.
The injuries that may actually occur
- persistent nociceptive pain from a physical injury
- neuropathic pain from a verified nerve lesion
- CRPS type I without identified nerve injury
- CRPS type II with identified nerve injury
- a separate recognised psychiatric injury associated with chronic pain
Symptoms and functional effects to document
- aching, burning, shooting or touch-evoked pain
- sleep, concentration and activity restriction
- guarding and reduced movement
- colour, temperature, sweating, swelling or trophic change in CRPS
- sensory or motor loss where a nerve is injured
Urgent health warning
New weakness, bowel or bladder loss, saddle numbness, a cold or pulseless limb, marked swelling, fever or rapidly changing neurological signs require urgent assessment.
Medical evidence
What tests and findings matter?
The records should identify the underlying injury and distinguish ordinary associated pain, verified nerve impairment, CRPS and any separate psychiatric diagnosis. A pain score alone cannot perform that work.
| Test or record | What it can establish | What it cannot establish alone |
|---|---|---|
| Body-system examination | Measures the joint, nerve, spine, organ or scar impairment that includes associated pain. | Pain severity is not converted to a separate WPI percentage. |
| CRPS criteria examination | Records the 11 specified CTP criteria, including sensory, vasomotor, swelling, movement and trophic findings. | At least 8 of the 11 criteria are required; severe pain alone is insufficient. |
| Neurological testing | Examination and, where relevant, EMG/NCS or imaging can localise a nerve root, peripheral nerve or central lesion. | Radiating or burning pain alone is not objective nerve impairment. |
| Treatment and function records | Show response to rehabilitation, medication, procedures and actual daily function over time. | Treatment intensity does not create a separate pain rating. |
A separate legal classification
Threshold injury is not the same as WPI
Pain associated with a soft tissue injury may remain within the threshold definition. A verified fracture, nerve injury, CRPS or other recognised non-soft-tissue injury may support a non-threshold classification. The pain label and WPI percentage do not decide classification by themselves.
A non-threshold classification does not set a WPI percentage. Conversely, a low or zero WPI assessment does not necessarily decide the threshold-injury classification. Physical and psychiatric WPI are assessed separately and cannot be combined to determine whether impairment is greater than 10%.
Motor Accident Guidelines Part 6
How is permanent impairment assessed?
Clause 6.38 says no separate allowance may be made for pain and AMA4 Chapter 15 must not be used. The relevant AMA4 body-system chapter already includes associated pain. For CRPS, clauses 6.61-6.64 require at least 8 of 11 criteria and replace the old causalgia/RSD method; clauses 6.107-6.108 apply that method to the lower limb.
| Assessment issue | CTP method | Important limit |
|---|---|---|
| Chronic pain from a physical injury | Assess the underlying spine, limb, nerve, skin or organ impairment under its Part 6 method. | Do not add AMA4 Chapter 15 or a separate pain percentage. |
| CRPS type I | Use clauses 6.61-6.63: required diagnosis, affected-joint movement and Table 11a sensory/pain without a nerve multiplier. | At least 8 of 11 criteria must be documented. |
| CRPS type II | Use clause 6.64: affected-joint movement plus the specified sensory and motor components for the injured nerve. | Do not add the same peripheral nerve impairment again. |
Verified Guidelines example or rule
The exact CTP rules are: no separate pain WPI and no AMA4 Chapter 15 under clause 6.38; at least 8 of 11 specified criteria for CRPS under clause 6.62; and use of the replacement type I or II method rather than the old causalgia/RSD section.
What may result in 0% or no assessable WPI?
- pain where the underlying body-system method produces 0% WPI
- severe pain without objective impairment required by the applicable method
- a CRPS label without at least 8 of 11 criteria
- symptoms that are not permanent or are better explained by an unrelated condition
What may support a higher assessment if verified?
- greater objective impairment under the correct body-system method
- verified nerve motor or sensory deficit
- CRPS meeting at least 8 criteria with supported joint and sensory or motor components
- a separate diagnosed psychiatric impairment assessed independently under PIRS
Combination and overlap rules
- AMA4 Chapter 15 must not be used and pain is not added separately.
- CRPS type II incorporates the relevant nerve components; the same nerve loss cannot be rated again.
- Physical and psychiatric WPI cannot be combined to determine whether impairment is greater than 10%.
What does not establish impairment by itself?
- a high pain score
- long-term analgesic use
- allodynia alone
- a CRPS diagnosis label without the criterion count
Crash-specific examples
Persistent knee pain after a healed injury
The knee is assessed under the most specific lower-limb method. Pain does not receive an additional Chapter 15 percentage.
CRPS after wrist fracture
The file must identify at least 8 of the 11 criteria, distinguish type I from type II and apply the replacement joint and sensory/nerve method without duplication.
Claim file preparation
Evidence checklist
Practical next steps
What should you do next with a chronic pain and crps claim?
Start with the insurer's most recent written decision and identify what is actually disputed: treatment, weekly payments or work capacity, threshold injury, permanent impairment, causation, or damages. These are separate questions and may require different evidence and review procedures. Record the date of the decision and every review deadline shown before gathering further material.
- 01
Preserve the claim and the decision under review
Keep the claim number, accident date, insurer letter, certificate of fitness and any internal review or Personal Injury Commission correspondence together. Do not assume that a treatment approval or payment of statutory benefits decides fault, damages eligibility or WPI.
- 02
Obtain evidence that answers the disputed issue
For this injury, the useful starting material includes the underlying accident diagnosis and imaging and serial specialist and rehabilitation examinations. Clinical testing may include Body-system examination and CRPS criteria examination. Ask the treating practitioner to record the diagnosis, accident causation, objective findings, treatment response and current functional limits rather than symptoms alone.
- 03
Use the correct review process
Compare the insurer's reasons with the records it relied on. A threshold-injury decision, treatment refusal, weekly-payment decision and WPI assessment do not all follow the same review process. The decision letter should identify available internal review or dispute steps and the applicable deadline.
If the decision, medical material or deadline is unclear, send the key documents for a focused review before lodging a broad objection. See the CTP disputes guide or contact NSW CTP Claim. Advice depends on the facts, evidence and current law; a review cannot guarantee a claim outcome.
Assessment source
Chronic pain and CRPS assessment under NSW CTP
Assessment source: Motor Accident Guidelines Part 6, clause 6.38; CRPS clauses 6.61-6.64 and 6.107-6.108; the applicable AMA4 body-system chapter. AMA4 Chapter 15 must not be used.
Threshold injury: Pain does not determine threshold status; the underlying accident injury and any recognised CRPS or psychiatric diagnosis must be classified separately.
What the assessor checks
- the underlying body-system method
- no separate Chapter 15 pain allowance
- 8 of 11 CRPS criteria
- type I or type II method without duplication
What does not establish the result by itself
- pain severity
- analgesic use
- allodynia alone
- CRPS label without criteria
Official sources
Related NSW CTP guides
Free claim check
Review the diagnosis, insurer decision and evidence together
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Frequently asked questions
- Is there a separate WPI percentage for chronic pain?
- No. Clause 6.38 prohibits a separate pain allowance and says AMA4 Chapter 15 must not be used.
- Where is pain considered?
- Associated pain is generally included in the percentage under the applicable body-system chapter.
- How many CRPS criteria are required?
- Clause 6.62 requires at least 8 of the 11 specified criteria.
- Is severe allodynia enough for CRPS?
- No. It is one possible finding; the required criterion count and full diagnosis still apply.
- Can physical and psychiatric WPI be combined to exceed 10%?
- No. They are assessed separately and cannot be combined for that test.