Statement of Principles concerning non-freezing cold injury (Reasonable Hypothesis) (No. 5 of 2018)

The text relies on a small set of interlocking legal and medical concepts that drive how claims will be assessed.

Non‑freezing cold injury, as defined in s7(2), is a disease of the sympathetic nerves and blood vessels affecting tissues of one or more limbs, most commonly the foot, due to prolonged exposure of the affected part to wet and non‑freezing cold conditions. The SOP explicitly excludes certain conditions from that definition: tropical immersion foot, chilblains, frostnip and frostbite (s7(2)(b)). The Schedule repeats the defined term non‑freezing cold injury by reference to subsection 7(2).

For causation, the SOP adopts the "reasonable hypothesis" threshold. It sets out the concrete factors that must exist in at least one instance before it can be said that a reasonable hypothesis has been raised connecting the condition to service (s9). The first and primary factor is a specifically quantified environmental exposure: moisture plus non‑freezing temperatures below 21 degrees Celsius for a period of at least ten hours within the 24 hours before the clinical onset of the injury (s9(1)). The instrument includes a note that the condition is most commonly associated with temperatures just above freezing, but the statutory factor uses the 21 degree Celsius threshold (s9 note 1). The second enumerated factor is inability to obtain appropriate clinical management for non‑freezing cold injury (s9(2)). Subsection 10(2) narrows the operation of s9(2): that factor applies only to material contribution to, or aggravation of, the condition where the injury was suffered or contracted before or during (but did not arise out of) relevant service.

The SOP also treats causation for death. Section 7(5) expands the meaning of non‑freezing cold injury to include death from a terminal event or condition that was contributed to by the person’s non‑freezing cold injury. The Schedule supplies examples of "terminal event" (for instance pneumonia, respiratory failure, cardiac arrest, circulatory failure and cessation of brain function). This means that the SOP contemplates a chain where a terminal event that causes death may be linked back to non‑freezing cold injury as a contributing condition (s7(5); Schedule).

The instrument references ICD‑10‑AM coding (s7(3)-(4)) but makes clear that the statutory definition in s7(2) is controlling when applying the SOP. The RMA records its view that there is sound medical‑scientific evidence for the relationship between the condition and relevant service (s8); the SOP thus functions as a medical evidence standard applied in administrative determinations under VEA and MRCA claim provisions (s5).

Finally, s11 provides a mechanism to resolve overlaps: where a factor in this SOP refers to an injury or disease covered by another SOP, the factors in that other SOP apply as in force from time to time. The Schedule defines relevant service to include operational, peacekeeping and hazardous services under the VEA, British nuclear test defence service under the VEA, and warlike and non‑warlike service under the MRCA, which delineates the service contexts in which the SOP’s factors must be related to a person’s service (Schedule).

The instrument operates on the population of persons making claims that fall within two statutory loci: claims to which section 120A of the VEA or section 338 of the MRCA applies (s5). The Schedule defines "relevant service" to include categories of service under the VEA (operational, peacekeeping, hazardous, British nuclear test defence) and under the MRCA (warlike and non‑warlike) so that the SOP is directly relevant to veterans and former members who render those forms of service. The text does not create benefits or liabilities itself; rather, it prescribes the medical‑causation criteria that must be met for a reasonable hypothesis to be raised linking non‑freezing cold injury (or death from it) to that relevant service.

Practically, the principal actors affected by the SOP are:

• Claimants: a person who alleges non‑freezing cold injury (or death caused in part by it) and who seeks to establish that the condition is related to relevant service for the purposes of the VEA or MRCA. To meet the SOP, a claimant will need to adduce evidence consistent with at least one of the listed factors in s9, and show that the factor is related to their relevant service (s10(1)).

• Decision makers: statutory decision makers who adjudicate VEA and MRCA claims will apply this SOP as the medical standard for assessing whether a reasonable hypothesis exists. The document was made by the RMA (s3), which is the statutory body authorised to set SOPs under s196B(2) VEA; the SOP thus binds the causation framework used in claims processes covered by the cited sections (s5).

• Medical practitioners and experts: treating clinicians and medico‑legal experts will be expected to frame clinical evidence in terms that address the SOP factors. For example, clinical records that document exposure to moisture and temperatures below 21 degrees Celsius for at least ten hours in the relevant timeframe (s9(1)), or records that document the inability to obtain appropriate clinical management (s9(2)), will be central.

• Administrators and legal representatives: agencies and advocates preparing, reviewing or contesting claims will need to map documentary, testimonial and medical evidence against the SOP’s precise thresholds, and to consider what constitutes "clinical onset" and whether the exposure is related to the listed categories of relevant service (s10; Schedule).

The instrument also has an indirect cohort effect: it repeals the prior immersion foot SOP No. 25 of 2009 (s4). That revocation will affect claims previously considered under the earlier SOP; new and ongoing claims will be assessed under the current SOP’s definition and factors.

The SOP does not itself impose criminal or civil penalties on persons, nor does it specify administrative sanctions. Its function is evidentiary. The Schedule’s definition of terminal event (examples given) means that death‑related claims involving conditions such as pneumonia or cardiac arrest may become relevant, but only if the terminal event was contributed to by the non‑freezing cold injury in accordance with the SOP’s scope (s7(5); Schedule).

The instrument is an evidentiary standard; it does not create duties in the sense of obligations to act or statutory offences. Instead, it specifies the factual and medical thresholds that determine a claimant’s entitlement pathway under the VEA and MRCA claim provisions referenced in s5. Key legal effects that arise from the SOP’s provisions include the following.

Rights and evidentiary thresholds:

• A claimant asserting that non‑freezing cold injury, or death from it, is related to their relevant service must show that at least one of the factors in s9 exists (s9). This is the minimum factual base required to raise a "reasonable hypothesis" of service connection.

• For death claims, s7(5) extends the condition to include death from a terminal event or condition that was contributed to by the person’s non‑freezing cold injury. The Schedule lists examples of terminal events. This means that, where medical evidence supports a causal contribution from the injury to a terminal event, a claimant can rely on the SOP to connect the death to service.

Decision‑maker guidance and the RMA’s role:

• The RMA made the instrument under the statutory power in s196B(2) VEA (s3). The instrument records the RMA’s view that there is "sound medical‑scientific evidence" indicating the relationship between the injury and relevant service (s8). That recorded view is the basis for the SOP and directs decision makers to the specific factors as the mechanism for establishing causation on the reasonable hypothesis standard.

Interplay with service connection:

• The SOP imposes a relational requirement: any factor asserted must be related to the person’s relevant service as defined in the Schedule (s10(1)). The Schedule lists the categories of relevant service that can ground claims under the VEA and MRCA. For s9(2) (inability to obtain appropriate clinical management), s10(2) limits its application to cases where the injury was suffered or contracted before or during (but did not arise out of) relevant service, and where the inability to obtain appropriate care materially contributed to, or aggravated, the condition.

Cross‑SOP application:

• If a factor in s9 refers to an injury or disease covered by another SOP, then the factors in that other SOP apply as in force from time to time (s11). This gives decision makers a rule for resolving overlapping conditions and ensures consistency among SOPs.

Practical duties on parties:

• The SOP implicitly allocates a practical duty to claimants to adduce evidence addressing the enumerated factors and their relationship to relevant service. Medical records, incident reports, environmental data and testimony about availability of clinical care will be the primary evidence categories necessary to discharge that evidential burden.

What the SOP does not do:

• The SOP does not itself grant entitlements, fix rates, prescribe benefits or set penalties. It does not specify how decision makers are to weigh competing evidence beyond the reasonable hypothesis threshold. It does not define "appropriate clinical management" in detail; that phrase remains a clinical judgment to be applied in context, subject to s10(2)’s limitation.

This Statement of Principles is not an enforcement instrument that establishes sanctions, fines or criminal penalties. The text contains no penal provisions. It functions as a medical‑evidentiary standard to be used in statutory claims processes under sections identified in s5 of the instrument.

Enforcement and application mechanisms:

• The RMA, the body that made the SOP (s3), has the statutory authority to determine SOPs under subsection 196B(2) VEA. The SOP’s enforcement is therefore administrative and institutional: it is enforced within the decisions framework of entitlement claims under the VEA and MRCA. The instrument itself does not describe the procedural steps that follow once a reasonable hypothesis is or is not raised; those steps are matters for the VEA and MRCA administrative and decision‑making regimes rather than for the SOP text.

Evidentiary consequence rather than punishment:

• The practical "enforcement" effect is evidentiary. If a claimant can show a factor in s9 and the requisite relationship to relevant service (s10(1)), then a reasonable hypothesis is raised. That threshold may trigger further procedural consequences within the VEA or MRCA claims process, for example duties on decision makers to make favourable inferences or to seek additional medical assessment, but such procedural consequences are not set out in this SOP. Conversely, if no factor in s9 is established, a decision maker may find that the reasonable hypothesis threshold has not been met. The SOP does not define the standard of proof beyond the phrase "reasonable hypothesis" and does not provide mechanisms for penalty or sanction.

No delegated enforcement powers conferred:

• The SOP does not delegate enforcement powers to third parties. It is not a code of conduct. It does not give rise to independent legal causes of action, administrative fines or criminal liability. Its role is confined to providing the criteria that must be assessed when considering whether non‑freezing cold injury (or death from it) can be inferred to be related to relevant service for statutory claim purposes.

Record keeping and evidential needs:

• Although the SOP does not impose express record‑keeping obligations, its practical impact is to shift attention to the need for contemporaneous documentation of the exposure history, clinical onset, and any inability to obtain appropriate clinical management. The absence of such records will be a material evidentiary obstacle for claimants attempting to meet the factors in s9.

The instrument is embedded within the statutory architecture of veterans' entitlements and military compensation law. Its legal interactions are primarily with the VEA and the MRCA, and with other Statements of Principles previously or subsequently determined under the same statutory mechanism.

Statutory source and application:

• The SOP is made under subsection 196B(2) of the Veterans’ Entitlements Act 1986 (s3). It explicitly applies to claims to which section 120A of the VEA or section 338 of the MRCA applies (s5). Those cited sections (not included in this instrument) are the statutory loci where the reasonable hypothesis test is operative; accordingly, this SOP supplies the medical criteria that must be satisfied in those statutory contexts.

Interaction with other SOPs:

• Section 11 provides a direct mechanism for interaction with other SOPs. If a factor in s9 refers to an injury or disease that is the subject of another SOP made under subsection 196B(2) of the VEA, the factors in that other SOP apply "in accordance with the terms of that Statement of Principles as in force from time to time." This ensures that overlapping medical conditions are governed by the contemporary versions of the relevant SOPs, and it establishes a rule for harmonising criteria across instruments.

Replacement of prior SOP:

• The instrument revokes the Statement of Principles concerning immersion foot No. 25 of 2009 (s4). That revocation means the legal criteria and definitions in the 2009 immersion foot SOP are displaced by this instrument for claims to which this SOP applies. Where legacy decisions relied on the old SOP, future assessments will be made under the definitions and factors set out here.

Medical coding reference:

• The SOP references the ICD‑10‑AM code T69.0 for non‑freezing cold injury (s7(3)-(4)) and specifies that the ICD coding is to the 2017 Tenth Edition of the Australian Modification. However, s7(3) makes clear that the statutory meaning of non‑freezing cold injury is that given in s7(2), so coding is ancillary and subordinate to the textual definition.

Overlap with non‑statutory clinical standards:

• The instrument does not expressly adopt or incorporate specific clinical guidelines or standards of care. Its reference to "appropriate clinical management" (s9(2)) invites assessment against prevailing clinical practice, but the SOP does not itself operationalise those standards. Claimants and medical experts will need to demonstrate what constitutes "appropriate" medical management in the circumstances, arguably by reference to contemporaneous clinical norms, though the SOP is silent on a particular standard.

Limits of interaction:

• The SOP does not displace non‑veterans legislation, workplace safety laws, or other regulatory regimes. It is confined to the VEA/MRCA claims context and to the RMA’s statutory role in setting medical standards for causation. The instrument does not amend or otherwise alter the substantive provisions of the VEA or MRCA; it provides an evidentiary tool used to determine whether the causal nexus between condition and service exists for statutory claim purposes.

This instrument itself contains the principal amendment action recorded in the text: it revokes the earlier Statement of Principles concerning immersion foot No. 25 of 2009 (s4). The document is dated 22 December 2017 (front page) and specifies that it commences on 29 January 2018 (s2). No other amendments, modifications or prior versions are included in the instrument provided.

What the text records:

• Date of instrument: the instrument was dated 22 December 2017 on the face of the instrument (front matter) and the RMA Chairperson’s signature appears beneath the instrument. The commencement date is later, 29 January 2018 (s2), creating a clear start of legal effect.

• Revocation: the SOP expressly revokes the prior immersion foot SOP No. 25 of 2009 (s4). The 2009 SOP is therefore no longer operative for claims that fall within the application clause of the 2018 instrument.

No subsequent amendments recorded in the text:

• The instrument does not list any later amendments, variations, or legislative changes made to it after commencement. The text does not include transitional provisions about claims lodged or determined before commencement. It does not specify whether claims pending at commencement are to be assessed under the old or new SOP; that procedural detail is not in the instrument’s text.

Instrument lifecycle implications:

• Because s11 allows factors in other SOPs to apply "as in force from time to time," the instrument contemplates that SOPs are amendable and that its cross‑references will track subsequent changes to other SOPs. However, the instrument itself contains no amendment history beyond the revocation it effects.

Practical matters for practitioners:

• For casework, the revocation of the 2009 immersion foot SOP and the commencement of this SOP create a clear breakpoint: claims made after 29 January 2018 are to be considered against the criteria in this instrument (s2-s4). Where historical decisions relied on the earlier SOP, practitioners should re‑examine whether those decisions would be materially affected by the definitional and factor changes contained in the new SOP. The instrument does not provide retroactive or transitional rules in the text provided.

The instrument as provided contains no record of litigation, court decisions, or judicial interpretation. The text does not cite any cases and does not report any legal challenges to the RMA’s determinations. There is no mention of tribunal or judicial decisions construing the SOP’s provisions.

What this means for practitioners:

• Absent reported litigation within this instrument, the SOP stands as the RMA’s unchallenged medical standard as of its commencement date; however, the lack of litigation history in the text means there is no statutory or judicial gloss on several potentially contested concepts in the SOP, such as what constitutes "clinical onset," how to prove exposure to the specified temperature and duration, or what qualifies as "appropriate clinical management" and "inability to obtain" it. These terms will likely be practical points of contention in claims and may be the subject of future administrative or judicial review. Practitioners should therefore anticipate evidence disputes and consider how to frame medical and factual material to align with the SOP’s precise criteria.

No adjudicative clarifications recorded:

• The instrument provides no examples of application or decision summaries. The RMA’s recorded view that there is "sound medical‑scientific evidence" (s8) is a statement of basis, not a judicial finding. Where contested matters arise, administrative tribunals or courts will need to reconcile the SOP’s language with the facts and with procedural rules in the VEA/MRCA frameworks; such jurisprudence is not present in this instrument.

Recommendation for practitioners faced with novel issues:

• Given the absence of litigation history in the instrument, legal practitioners, medical advisers and decision makers should document evidentiary strategies and contemporaneous clinical findings carefully. They should be ready to deploy expert evidence to explain how the SOP’s factors apply in any contested case, because the text provides precise quantitative and temporal thresholds (for example s9(1)’s "at least ten hours within the 24 hours before the clinical onset") that will be central to dispute.

The SOP contains several features that will be pitfalls for claimants and points of attention for decision makers. These are not value judgments; they are practical features of the instrument that affect evidentiary strategy and case outcomes.

1. Narrow, quantified exposure requirement

• The primary factor in s9(1) requires exposure to moisture and non‑freezing temperatures below 21 degrees Celsius for at least ten hours within the 24 hours before clinical onset of the injury. The specific threshold of below 21 degrees Celsius is higher than many might expect for a "cold" injury; the SOP also includes an explanatory note that the injury is most commonly associated with temperatures just above freezing (s9 note 1). Practitioners must reconcile the statutory threshold with clinical narrative and environmental records. Absence of evidence documenting temperature, duration or moisture at the relevant time may be fatal to a claim relying on s9(1).

2. Temporal linkage to "clinical onset"

• The factor requires the exposure to be within the 24 hours before "clinical onset." The instrument does not define "clinical onset" in precise temporal terms. Establishing the date and time of clinical onset may be difficult when presentation is delayed, when symptoms are insidious, or when records are incomplete. Medical opinions will be necessary to anchor "clinical onset" and to link it temporally to the exposure described in s9(1).

3. "Inability to obtain appropriate clinical management" is imprecise and limited in scope

• The second factor in s9(2) is phrased as inability to obtain appropriate clinical management. The SOP does not define "appropriate clinical management" or "inability to obtain." Moreover, s10(2) limits the applicability of s9(2) to circumstances where the person’s injury was suffered or contracted before or during (but did not arise out of) relevant service, and where the lack of care materially contributed to or aggravated the injury. That limitation means s9(2) cannot be used to establish initial causation if the injury arose out of service. Proving inability to obtain care will require evidence about available services, attempts to obtain care and clinical consequences of the lack of care.

4. Exclusions

• The SOP expressly excludes tropical immersion foot, chilblains, frostnip and frostbite (s7(2)(b)). A claimant whose presentation is clinically closer to those excluded conditions will not be able to rely on this SOP. Practitioners must ensure the clinical diagnosis aligns with the statutory definition in s7(2).

5. ICD‑10‑AM code is ancillary

• While s7(3) notes the ICD‑10‑AM code T69.0 applies to non‑freezing cold injury, subsection 7(3) clarifies that for the purposes of the SOP the meaning is the statutory text in s7(2). Do not assume ICD coding alone satisfies the SOP’s textual definition.

6. Death claims require contribution to a terminal event

• For death claims, s7(5) extends the condition to include death from a terminal event that was contributed to by the person’s non‑freezing cold injury. The Schedule lists examples of terminal events. Legal and medical evidence will therefore need to establish a causal contribution from the chronic or acute effects of non‑freezing cold injury to the terminal event, which is a distinct and often complex causal question.

7. Relationship to relevant service is mandatory

• Any factor relied upon must be related to the person’s relevant service (s10(1)). The Schedule’s definition of relevant service sets out discrete categories. Where exposure occurred outside catalogued relevant service, the SOP will not assist in linking the condition to service.

8. Cross‑reference to other SOPs can change the applicable factors

• Where s9 refers to a condition covered by another SOP, the factors in that other SOP apply "as in force from time to time" (s11). That can create shifting legal terrain if the other SOPs are subsequently amended.

9. No procedural detail or evidentiary standard provided

• The SOP does not set out how to weigh competing evidence, what constitutes satisfactory proof for a reasonable hypothesis, or procedural steps following the raising (or not) of a reasonable hypothesis. Practitioners must therefore operate within the procedural frameworks of the VEA and MRCA and be prepared to supply clarifying expert evidence.

10. Revocation of prior SOP without transitional guidance

• The instrument revokes the 2009 immersion foot SOP (s4) but does not include transitional provisions addressing claims in flight at commencement. Parties should check the VEA and MRCA procedural rules and administrative practice for guidance on transitional application.

Compliance in this context means compiling the evidential materials necessary for a decision maker to be able to say that a reasonable hypothesis has been raised linking the non‑freezing cold injury (or death from it) to relevant service under the VEA or MRCA. The SOP itself prescribes the factors and relationship requirements that must be satisfied; it does not impose criminal sanctions, but it does create a precise evidentiary map. Practitioners should structure claims and supporting material as follows.

1. Establish the diagnosis in statutory terms

• Ensure the medical record and expert reports state the diagnosis consistent with the statutory definition in s7(2). The SOP controls the legal meaning of non‑freezing cold injury, not mere ICD coding. If the presenting problem might be an excluded condition (tropical immersion foot, chilblains, frostnip, frostbite), address differential diagnosis explicitly and provide reasons why the condition meets the statutory definition.

2. Address the primary exposure factor (s9(1)) with documentary detail

• For claims relying on s9(1), produce contemporaneous or corroborative evidence that the claimant’s affected limb was exposed to moisture and non‑freezing temperatures below 21 degrees Celsius for at least ten hours within the 24 hours before clinical onset. Potential evidence types include:
  • Operational or exercise logs, duty rosters and incident reports that record time frames and environmental conditions.
  • Weather data, field or site temperature recordings, or credible witness statements about ambient conditions and wetness.
  • Photographs, unit communications or third‑party logs that corroborate exposure durations.
  • Clinical notes that identify the date and time of "clinical onset." Expert opinion should be used to link the documented exposure timing to the onset of clinically significant signs and symptoms.

3. If relying on inability to obtain appropriate clinical management (s9(2)), document attempts and consequences

• For s9(2), assemble evidence of:
  • Attempts to access care, including dates, locations, and communications with health providers or military medical services.
  • Records showing unavailability of services, referrals declined, or other barriers to receiving appropriate treatment.
  • Clinical documentation of the consequences of delayed or absent care, and expert opinion explaining how lack of appropriate management materially contributed to or aggravated the injury.
• Remember s10(2) narrows s9(2) to injuries that were suffered or contracted before or during, but not out of, relevant service. Address timing and legal characterisation of the injury relative to service.

4. Link factors to relevant service (s10(1)) and identify the appropriate service category

• Explicitly connect the established factor to one of the Schedule’s relevant service categories (operational, peacekeeping, hazardous, British nuclear test defence under the VEA; warlike or non‑warlike under the MRCA). Provide documentary support that the exposure or inability to obtain care occurred in the context of that relevant service.

5. For death claims, link injury to terminal event

• Where asserting death from non‑freezing cold injury, produce medical evidence that the injury contributed to the terminal event. The Schedule lists common terminal events; medical experts should explain pathophysiological links between the injury and the terminal condition (for example, how chronic neuropathy or circulatory impairment arising from non‑freezing cold injury could contribute to pneumonia or circulatory failure).

6. Anticipate excluded conditions and cross‑SOP interaction

• If any factor invokes a condition covered by another SOP (s11), check the applicable SOP(s) and ensure evidence also meets those instruments’ factors "as in force from time to time." Address exclusions in s7(2)(b) and be prepared to show why the case is not excluded.

7. Use expert opinion to bridge medical and statutory concepts

• Given the technical concepts and precise temporal thresholds, supply robust medico‑legal opinion that:
  • Interprets clinical records in relation to "clinical onset";
  • Explains how documented environmental conditions met the statutory threshold;
  • Addresses whether inability to obtain care was "appropriate" and how it materially affected the condition;
  • Parses causal contribution to terminal events for death claims.

8. Prepare for evidence gaps

• Where contemporaneous environmental or clinical records are absent, use circumstantial evidence and credible witness statements to reconstruct events, and have experts provide opinion on plausibility. Be aware that absence of documentation on exposure duration or moisture may pose a gatekeeping obstacle under s9(1).

9. Consider sequencing and timing of claims

• Since the SOP replaced the prior immersion foot SOP and commenced on a specific date (s2-s4), practitioners should note the operational date and, where relevant, consider whether a prior SOP applied to earlier events. The instrument itself does not specify transitional application.

10. Administrative practice and record format

• Present evidence in a way that aligns clearly with the SOP: state which factor(s) in s9 are relied upon, map each piece of evidence to the statutory element (for example, evidence A shows moisture; evidence B shows temperature below 21 degrees Celsius for a specified timeframe), and provide an expert summary that reaches a clear conclusion on whether the SOP’s criteria are met.

In all of these steps, the statutory definitions and limitations in the SOP control. The RMA’s recorded view that there is "sound medical‑scientific evidence" for the relationship (s8) supports deploying medical expert evidence, but the threshold to be met in the statutory claims process remains the presence of at least one of the factors in s9 and the service relationship in s10.