A prescribed presumptive condition is an injury or disease included in a legislative instrument made under subsection 27A(3). Once a condition appears in that instrument, it may be accepted on a presumptive basis provided that the condition has been validly diagnosed by a relevant medical practitioner and the claimant meets the related onset and service requirements and there is no definitive evidence of non-service causation. Importantly, a condition does not need to be the subject of a SoP for it to be prescribed. Where there is a SoP for the claimed condition, a factor does not need to be met as presumption can be applied without reference to the SoPs.
A prescribed kind of defence service refers to the specific service requirements that must be satisfied for a claim to qualify for presumptive acceptance. These parameters might relate to the branch of service, the nature of duties, length of engagement, period of service, or other service characteristics described in the instrument. Only the criteria set out in the legislative instrument apply.
A presumption of service connection means that once a Delegate has confirmed the diagnosis, onset timeframe and service requirements specified for that condition apply to the veteran, the condition is taken to be a service injury or service disease without further inquiry into how the service contributed to its onset or aggravation.
If presumptive criteria are not met the claim should be assessed via the normal heads of liability, including SOPs if applicable.