Statement of Principles concerning complex regional pain syndrome (Balance of Probabilities) (No. 98 of 2016)

The SoP turns on a small number of tightly framed medical and legal concepts. Each concept is defined or structured in the text and Schedule, and decision‑makers must apply them as written.

Complex regional pain syndrome: The SoP defines CRPS in clinical terms rather than by reference to ICD codes or statutory labels. For the instrument, CRPS is a disorder of one or more body regions meeting three component conditions: continuing pain disproportionate to any inciting event; at least one symptom in two of four specified categories (sensory; vasomotor; sudomotor/oedema; motor/trophic); and at least one sign at time of evaluation in two or more of those categories (s 6(2)). This imposes both a symptom‑based requirement and an objective sign requirement at evaluation.

Clinical onset and origin requirements: Several causal factors in s 8 require events to have occurred within the six months before the clinical onset of CRPS and require that the pain "originates in the region" affected by the nerve injury, other listed injury/disease, or surgery (ss 8(1)-(3)). The instrument uses the phrase "clinical onset" but does not define it in the Schedule; decision‑makers must therefore apply the phrase as it appears in clinical records and medico‑legal evidence (s 6(2), s 8).

Specified list of injuries or diseases: Schedule 1 lists injuries and diseases that, if present in the six months before clinical onset, can be qualifying factors (s 8(2); Schedule 1). The list ranges from acute myocardial infarction to intramuscular injection, fracture, herpes zoster, spinal cord injury and "any other injury or disease which causes acute tissue damage" (Schedule 1).

Factors that must exist: Section 8 provides at least one of five factors that must be shown for service connection: injury or disease of a major peripheral nerve; an injury/disease from the specified list; surgery; treatment with phenobarbital at onset; or inability to obtain appropriate clinical management (s 8). The first three include the six‑month timing and regional pain origin requirements.

Relationship to service: The SoP conditions the factors on their being related to the person's relevant service, which the Schedule defines narrowly as eligible war service (other than operational service) or defence service (with specific exclusions) under the VEA, or peacetime service under the MRCA (s 9; Schedule 1). The inability‑to‑obtain‑management factor (s 8(5)) has a special limitation: it only applies to material contribution to or aggravation of CRPS where the CRPS was suffered or contracted before or during, but did not arise out of, relevant service (s 9(2)).

Death and terminal events: The SoP includes death from CRPS where the death is from a terminal event or condition that was contributed to by the person's CRPS (s 6(3)). The Schedule defines terminal event with examples such as pneumonia, respiratory failure and cardiac arrest (Schedule 1).

Relation to other SoPs: If a factor in s 8 refers to an injury or disease covered by another SoP, the provisions of that other SoP apply in accordance with its terms as in force from time to time (s 10).

Causation threshold: The Authority expressly frames its view in probabilistic terms: "more probable than not" for the relationship between CRPS (or death from CRPS) and relevant service, grounded on the sound medical‑scientific evidence available (s 7). This mirrors the balance of probabilities test embedded in the instrument title.

These primary concepts structure what evidence must be obtained and how it must be linked to service. Several terms are used without operational definitions in the instrument (for example clinical onset, appropriate clinical management, major peripheral nerve), meaning adjudicators must apply clinical judgement and supporting documentation to operationalise the SoP in claims adjudication.

The SoP governs the evidentiary framework for claims under the VEA and MRCA specified in s 4. The immediate subjects affected are persons lodging claims to which section 120B of the VEA or section 339 of the MRCA applies. The instrument does not itself confer entitlements or set rates; rather, it prescribes the medical causation criteria that decision‑makers will apply when assessing whether CRPS or death from CRPS is connected with a person's relevant service.

Specifically:

• Claimants: Veterans or former members of the Forces who assert that they have CRPS, or that CRPS contributed to their death, and who are making a claim under the specified provisions of the VEA or MRCA (s 4). These persons must establish the clinical diagnosis elements (s 6) and at least one of the service‑related factors (s 8), together with the service nexus required by s 9.
• Treating clinicians and medical experts: They are the producers of the clinical records and expert reports that will be used to demonstrate the symptom and sign pattern at evaluation, the timing of clinical onset, the anatomical origin of pain, presence of qualifying injuries or surgery, drug therapy and evidence concerning availability of clinical management (ss 6, 8).
• Decision‑makers under the VEA and MRCA: Officers administering claims will apply this SoP as the Authority's statement of the medical‑scientific evidence about causation for CRPS when deciding whether the condition is connected with relevant service (s 7; s 4). The SoP itself is an input to adjudication rather than an adjudication.
• The Repatriation Medical Authority: As the instrument maker, the Authority has set its view on causation and the factors that must exist (s 3, s 7). The Authority's view is expressed as "on the sound medical‑scientific evidence available" it is of the view that a service link is more probable than not (s 7).

The Schedule narrows who counts as having "relevant service": eligible war service other than operational service, defence service excluding hazardous service and British nuclear test defence service under the VEA, or peacetime service under the MRCA (Schedule 1). This restricts the pool of service types that can be relied upon for a service nexus. The SoP therefore affects veterans and members whose service falls within those definitional categories; it does not, on its face, cover other forms of service outside that Schedule definition.

Where a factor in s 8 refers to an injury or disease covered by another SoP, the other SoP's provisions will apply in accordance with its terms as in force from time to time (s 10). That creates an administrative interface between multiple SoPs and affects how claimants and their advisers assemble cross‑referenced medical and service evidence.

The instrument does not specify financial flows, penalties, or other sanctions; its practical effect is on evidence preparation, timing of claims, medical documentation and the standard of proof required to establish service connection for CRPS and related deaths.

This SoP establishes duties in an evidentiary sense rather than imposing statutory obligations on the private sector. The principal duty created by the instrument is procedural: claimants and their medical advisers must adduce the particular types of medical and service evidence described in the instrument if they wish to show, on the balance of probabilities, that CRPS or death from CRPS is connected with relevant service.

Key duties or evidentiary requirements arising from the text include:

• Demonstrate that the condition meets the defined clinical criteria for CRPS: continuing disproportionate pain, at least one symptom in two of the four categories and at least one sign at evaluation in two or more categories (s 6(2)). That is a dual requirement: subjective complaint plus objective sign(s) at the time of evaluation.
• Establish at least one of the factors in s 8. Each factor carries its own evidentiary content: for factors 8(1)-(3) there is a six‑month temporal window prior to clinical onset and an anatomical link between the event and the region where pain originates; factor 8(4) requires documented phenobarbital treatment at the time of clinical onset; factor 8(5) requires evidence the person was unable to obtain appropriate clinical management (s 8).
• Link the factor to relevant service: any factor relied upon must be related to the person's relevant service as defined in the Schedule (s 9(1)). For the inability‑to‑obtain‑management factor, the SoP limits its operation to material contribution to or aggravation of CRPS where CRPS was suffered or contracted before or during, but did not arise out of, relevant service (s 9(2)). This places a narrower role on s 8(5) where the condition pre‑existed or was contracted outside service.
• Where a factor in s 8 refers to an injury or disease that itself is covered by another SoP, adhere to that other SoP's factors and terms as in force (s 10). That duty requires claimants to obtain and align evidence with the relevant cross‑referenced SoP.

Rights that follow from the SoP are procedural and indirect. The Authority's expression that, on the sound medical‑scientific evidence available, CRPS can be related to relevant service on the balance of probabilities (s 7) gives claimants a defined evidentiary benchmark; establishing the instrument's clinical and service factors entitles a claimant to have the disease treated as connected for the purposes of the relevant statutory claims process. The SoP effectively sets the medical causation template that decision‑makers will apply in adjudication. The instrument does not itself create payments or entitlements; it operates within the statutory claims processes under the VEA and MRCA.

There are no express duties on health providers or government agencies to take specific operational steps in the text. The practical duty for medical practitioners and claimants is to generate and preserve clinical documentation that tracks symptoms, objective signs at evaluation, timing of onset and relevant service links in accordance with the SoP's structure.

The instrument contains no express criminal sanctions, pecuniary penalties or enforcement mechanisms. It is an evidentiary and adjudicative instrument that establishes the medical causation framework used by decision‑makers when considering claims under the VEA and MRCA (s 4, s 7). Accordingly:

• There are no penalties contained within the instrument itself for non‑compliance by claimants, clinicians or decision‑makers. The text does not prescribe fines, imprisonment or administrative penalties.
• Enforcement is administrative and indirect: the SoP operates as the Repatriation Medical Authority's formal statement of the medical‑scientific evidence and the factors that "must exist" for a finding of connection. Decision‑makers applying the VEA or MRCA will use the SoP as the medical test to determine whether a claim satisfies the statutory tests in the relevant claim provisions. The instrument's function in practice is to guide claim outcomes rather than to impose enforceable sanctions (s 4, s 7).

Operational consequences that have enforcement‑like effects for claimants arise through the claims process rather than via penalties stated in the instrument. If the claimant cannot establish the clinical criteria in s 6 and at least one factor in s 8 related to relevant service under s 9, decision‑makers may find that the condition is not connected with service, with the consequential administrative result that the particular claim is unsuccessful. Those consequences are outcomes of adjudication under the VEA or MRCA and not sanctions contained in the SoP.

The SoP provides criteria for death cases as well, by including death from a terminal event or condition contributed to by CRPS (s 6(3) and Schedule 1). Again, there are no penalties; the relevant enforcement mechanism is the administrative determination of service connection in the claims process.

In short, the instrument is not an enforcement vehicle. Its practical effect is to channel what evidence is necessary for claims and to standardise the medical causation test that decision‑makers must apply.

The SoP is expressly made under subsection 196B(3) of the VEA (s 3) and applies to claims to which section 120B of the VEA or section 339 of the MRCA applies (s 4). Those cross‑references define the statutory context in which this instrument operates. The SoP therefore functions as subordinate medical guidance within the statutory claims framework of the VEA and the MRCA.

Cross‑SoP interaction: Section 10 sets up a concrete interaction rule. If a factor in s 8 refers to an injury or disease that is the subject of another SoP determined under subsection 196B(3) of the VEA, then the factors in that other SoP apply in accordance with its terms as in force from time to time (s 10). This creates a hierarchical or networked evidentiary relationship between SoPs. Practically, a claimant relying on, say, an injury that appears in the specified list will have to ensure their evidence also satisfies any requirements in the other SoP that covers that injury.

Interaction with the statutory causation tests: The Authority states its view "on the sound medical‑scientific evidence available" that it is more probable than not that CRPS and death from CRPS can be related to relevant service (s 7). The SoP thus supplies the medical causation template that decision‑makers employ when applying statutory causation tests in the VEA and MRCA claim provisions cited in s 4. The instrument does not alter the statutory tests; it provides the Authority's medical opinion on what medical factors and temporal relationships satisfy causation on a balance of probabilities standard within the statutory scheme.

Definitions and exclusions: The Schedule narrows the meaning of "relevant service" for the SoP's purposes to particular kinds of VEA and MRCA service (Schedule 1). Those definitional limits must be read alongside the statutory definitions and provisions in the VEA and MRCA when deciding whether service is within the statutory concept of relevant service for a particular claimant. The SoP does not amend the statutory text; rather, it operates within its contours as a medical evidence instrument.

No conflict resolution provision: The SoP does not state what happens if another instrument or statutory provision appears to conflict with it. In practice, adjudicators must reconcile the SoP with the governing statutory provisions and any other applicable SoPs. Section 10 indicates that where other SoPs apply to a referenced injury, their terms govern, but the instrument does not provide a comprehensive conflict resolution mechanism beyond that.

No mention of procedural appeal or review pathways: The instrument does not itself mention appeal rights or administrative review processes available under the VEA or MRCA. Any such review rights are found in the operative statutes and administrative processes; the SoP provides the medical standard to be applied in those processes.

Overall, the SoP interacts with other laws by sitting as the Repatriation Medical Authority's medical view within the statutory claims architecture. It cross‑refers to other SoPs and conditions its factors on the statutory concept of relevant service as defined in its Schedule.

The instrument records its own date and commencement details but contains no internal record of subsequent amendments. The text as supplied states:

• The instrument is the Statement of Principles concerning complex regional pain syndrome (Balance of Probabilities) (No. 98 of 2016) (s 1).
• It is dated 28 October 2016 and commences on 28 November 2016 (s 2; dated instrument cover).
• It is made under subsection 196B(3) of the VEA (s 3).

There are no textual amendment clauses, savings provisions or transitional arrangements included in the instrument as presented. There is also no list of prior instruments amended by it or instruments that it amends.

Section 10 contemplates other Statements of Principles "as in force from time to time," which implicitly acknowledges that other SoPs may be amended and that those revisions will apply to the extent relevant; however, the instrument itself does not provide an amendment history for either itself or other SoPs.

For practitioners and advisers, the absence of an amendment history in the instrument means that when preparing claims or advice one must verify whether subsequent SoPs have been made or earlier SoPs amended. The instrument's cross‑reference to other SoPs (s 10) requires attention to the current versions of those instruments. The SoP as provided should be treated as the No. 98 of 2016 instrument in force from its commencement date until superseded or amended by a later instrument, but there is no explicit record of any such supersession in the text supplied.

In short, the instrument contains a single dated entry point and no internal amendment notes. Any amendment history must be sourced from external records of the Repatriation Medical Authority or the federal legal notices that track subsequent instruments.

The text of the instrument contains no references to litigation, court decisions, precedents or judicial consideration. It is an administrative instrument made by the Repatriation Medical Authority under the VEA and contains no internal summary of cases or dispute outcomes.

Because the instrument itself is a Statement of Principles intended to be applied in administrative adjudication of claims under the VEA and MRCA, disputes about its application could arise in claim review and merits review channels or in courts, but the instrument does not record any such history. There are no case citations, reported appeals or examples of judicial interpretation within the text supplied.

Practitioners seeking litigation history or judicial interpretation concerning this SoP will need to consult external sources: administrative tribunal decisions, Federal Court or Federal Circuit Court rulings, or determinations of merits review bodies that reference this SoP, none of which are contained in the instrument itself. The instrument does not purport to summarise or catalogue disputes that may have arisen over its application.

Within the instrument, the Authority frames its determinations as being "on the sound medical‑scientific evidence available" (s 7), which is an evidentiary statement rather than a record of litigation. Any case law that has considered this SoP or its application must be located and cited from external authorities, as the instrument provides no internal litigation history.

The instrument contains several features that commonly give rise to dispute or require careful evidentiary attention. These are practical points where claim outcomes hinge on the precise drafting of the SoP and where claimants and decision‑makers may misunderstand or misapply the text.

1. Dual symptom and sign requirement at evaluation (s 6(2))

• The SoP requires both subjective symptoms in two categories and at least one objective sign at the time of evaluation in two or more categories. That means documentation must show the contemporaneous clinical signs at evaluation, not merely retrospective complaints. An absence of recorded signs at evaluation may undermine a claim even if historical symptoms are well described.

2. "Disproportionate" pain and clinical judgement (s 6(2)(a))

• The phrase continuing pain "disproportionate to any inciting event" is clinical and subjective. What counts as disproportionate is not defined. Decision‑makers will rely on clinical records and expert interpretation. Inconsistent or sparse clinical notes on the relationship between the inciting event and reported pain intensity are a common cause of disagreement.

3. "Clinical onset" is used but not defined (ss 6, 8)

• Several s 8 factors require events in the six months before "clinical onset" of CRPS, yet the SoP does not define that term. Practitioners must be prepared to justify their chosen point of clinical onset using contemporaneous notes or expert opinion. Discrepancies about onset timing can defeat the six‑month linkage requirement.

4. Anatomical origin requirement (ss 8(1)-(3))

• For nerve injury, listed injuries/diseases and surgery, the pain must "originate in the region" affected. Merely having the event somewhere in the body without a clear anatomical link to the pain region will not suffice. That requires precise clinical mapping in evidence.

5. Six‑month temporal window (ss 8(1)-(3))

• The trigger events must occur within six months before clinical onset. If the event is outside that window, the factor cannot be used. This temporal strictness can be fatal to claims where onset documentation is delayed or retrospective.

6. Phenobarbital factor is narrowly framed (s 8(4))

• Treatment with phenobarbital at the time of clinical onset qualifies as a factor. The SoP does not mention other drugs. Claims that suggest alternative pharmacological triggers will need other supporting factors.

7. Inability to obtain appropriate clinical management is limited and contestable (s 8(5), s 9(2))

• The inability‑to‑obtain‑management factor can only support material contribution or aggravation where CRPS was suffered or contracted before or during, but not arising out of, relevant service (s 9(2)). It is therefore not a broad fallback. Moreover, "appropriate clinical management" is not defined, creating disputes about what counts as inability and what evidence will prove it. Documentation such as referrals, waitlist details, refusal letters or military medical records showing unavailability will be critical.

8. Relevant service definition narrows the service nexus (Schedule 1)

• Relevant service is defined to include eligible war service (other than operational service), defence service (with specified exceptions) under the VEA, or peacetime service under the MRCA. This definition may exclude forms of service that a claimant might initially assume are captured. Advisers must check that the claimant's service falls within these categories.

9. Cross‑SoP interaction can complicate proof (s 10)

• If a factor in s 8 is an injury or disease that is covered by another SoP, the claimant must also comply with that other SoP's requirements. That can expand the evidentiary burden and introduce additional timing or causation conditions.

10. Death cases require demonstration of contribution to the terminal event (s 6(3); Schedule)

• To bring a death within the SoP, it is not enough that the person had CRPS; one must show that CRPS contributed to the terminal event or condition leading to death. The Schedule sets out examples of terminal events. Establishing contribution to death will frequently require post‑mortem reports or clear clinical evidence linking CRPS to the terminal event.

11. No operational definitions for key terms

• Terms such as "major peripheral nerve," "appropriate clinical management" and "clinical onset" are used but not defined. That transfers interpretive burden to medical experts and decision‑makers, increasing uncertainty and the potential for differing expert opinions.

12. Balance of probabilities standard stated but not operationalised clinically (s 7)

• The Authority's statement that, based on available medical science, it is "more probable than not" that CRPS can be related to relevant service is a high‑level declaration. The instrument prescribes specific factors that must exist; however, the practical inference of probability often depends on the quality and coherence of the claimant's clinical record.

These "gotchas" indicate where claim preparation, medical record keeping and expert evidence need to be precise. Advisers should not assume flexible interpretation of the SoP; instead, they must marshal contemporaneous records and expert opinion tailored to the instrument's specific requirements.

Compliance with this SoP, understood as preparing an admissible claim that satisfies its medical and service connection criteria, requires focused evidence and procedural attention. Below are practical steps, mapped to the instrument's provisions, that claimants, treating clinicians and advisers should take.

1. Establish the clinical diagnosis elements in s 6(2)

• Document continuing pain described as disproportionate to any inciting event (s 6(2)(a)). Clinical notes should assess and state the relationship between the inciting event and pain severity.
• Record symptoms in at least two categories: sensory; vasomotor; sudomotor/oedema; motor/trophic (s 6(2)(b)). Use discrete clinical entries that list each symptom category and detail manifestations.
• Record objective signs at the time of evaluation in at least two categories (s 6(2)(c)). The SoP requires signs "at the time of evaluation", so contemporaneous objective findings are critical. Include sensory testing (pinprick, light touch), observations of temperature or colour asymmetry, assessments of oedema or sweating, and motor/trophic examinations. If specialists provide formal assessments (neurology, pain medicine), obtain those reports.

2. Establish timing: clinical onset

• Precisely identify and document the date or period of clinical onset. Because s 8 factors rely on events occurring within six months before clinical onset, contemporaneous records (first presentation notes, emergency department records, specialist referrals) are essential. Where onset cannot be recorded exactly, obtain an expert medico‑legal opinion that justifies a reasonable onset date based on records.

3. Demonstrate at least one s 8 factor and its anatomical origin

• For s 8(1) (major peripheral nerve injury/disease): document the peripheral nerve affected, the date of the injury/disease, and that the CRPS pain originates in the region innervated by the nerve. Provide surgical reports, nerve conduction studies, imaging, specialist notes that identify the nerve involved.
• For s 8(2) (specified list injury/disease): match the event to one of the Schedule 1 items and show it occurred within six months before clinical onset, with pain originating in the affected body region. Provide operative notes, trauma records, accident reports, or diagnostic records as appropriate.
• For s 8(3) (surgery): provide the operation date, operative report and notes tying the surgical region to the region of pain onset.
• For s 8(4) (phenobarbital treatment): supply medication records, prescriptions, hospital charts or pharmacy dispensing details showing phenobarbital treatment at the time of clinical onset.
• For s 8(5) (inability to obtain appropriate clinical management): assemble evidence of attempts to obtain care and reasons for failure. This can include referral letters, proof of waitlist status, appointment cancellations, denial letters, records of military dental/medical unavailability, or contemporaneous correspondence showing lack of access to standard care. Remember s 9(2) limits this factor to contribution or aggravation where the CRPS was suffered or contracted before or during, but did not arise out of, relevant service.

4. Link the factor to relevant service under s 9 and Schedule 1

• Confirm that the factor relied upon is linked to the claimant's relevant service type as defined in the Schedule: eligible war service (other than operational service), defence service (other than hazardous service and British nuclear test defence service) under the VEA, or peacetime service under the MRCA (Schedule 1). Obtain service records, deployment records and other documentary proof to show the relevant service period and to demonstrate how the qualifying injury/disease or surgery is connected to that service.

5. If a factor refers to another SoP, obtain and meet its terms (s 10)

• Identify whether the injury or disease referenced in s 8 is covered by another SoP. If it is, obtain that SoP and ensure the claim meets the factors it prescribes, because s 10 makes those factors applicable. This may require additional clinical or temporal evidence.

6. For death claims, show contribution to the terminal event (s 6(3) and Schedule)

• For claims involving death, obtain coronial reports, terminal event documentation, hospital records and expert opinion demonstrating that CRPS contributed to the terminal event or condition that caused death. The Schedule lists example terminal events; the causal link must be demonstrated in evidence.

7. Use experts to fill interpretive gaps

• Where terms are undefined in the instrument (for example clinical onset, major peripheral nerve, appropriate clinical management), obtain specialist opinions that explain how, on the balance of probabilities, the clinical facts satisfy the SoP. Experts should directly address each statutory element in the instrument.

8. Prepare for cross‑examination on timing and anatomical origin

• Because the SoP imposes narrow timing and anatomical requirements, ensure records corroborate the claimed timelines and anatomical links. Where documents are silent, explain gaps with contemporaneous affidavits, clinical notes or expert reconstructions.

9. Maintain comprehensive medico‑administrative documentation

• Keep full records of military medical encounters, civilian treatment, medication records, imaging, operation notes, and referral correspondence. The SoP demands contemporaneous evidence for signs at evaluation and for the temporal links required by s 8.

10. Map evidence to the SoP structure in submissions

• In claims submissions, explicitly state how the evidence satisfies each element of s 6 and which s 8 factor is relied upon, and then explain the nexus to relevant service per s 9. If relying on an injury covered by another SoP, attach that SoP and show compliance with its factors.

Following these steps aligns the evidence with the instrument's specific requirements. The instrument's limited definitions and tight timing windows mean evidence must be focused, contemporaneous and mapped precisely to the SoP's language.