(1) Assessment of the "treatment dispute"
34Prior to the CARS assessor making her determination, on 2 March 2011, Mr Smith attended the Medical Assessment Service for assessment by Dr Gibson.
35The specific questions to be determined by Dr Gibson were whether:
"28.5 to 34.5 hours a weeks of domestic assistance arising out of the injuries to the right ankle and foot with washing clothes, placing them on line or in dryer and ironing, vacuuming, dusting and making beds, cleaning bathrooms, cooking evening meal, cleaning the kitchen, washing dishes, shopping, assistance with personal care for showering, getting on and off toilets, chairs and bed and handyman work and gardening from the date of the accident to the date of MAS assessment.
...
are REASONABLE AND NECESSARY in the circumstances."
(my emphasis added)
36The same question was asked in relation to the period from the date of the MAS assessment and ongoing and the same answer was given.
37On 4 April 2011 the Medical Assessor, Dr Gibson, issued a Certificate and answered the two questions:
"Treatment - Reasonable and Necessary
Based on the above I conclude the listed domestic assistance for the periods indicated is not reasonable and necessary in relation to the injuries sustained in the subject accident."
38Hence, Dr Gibson determined that care of 28.5 to 34.5 hours per week for both past and future domestic assistance was not reasonable and necessary in relation to the injuries Mr Smith suffered as a result of the accident.
39By virtue s 42 of the Act "treatment" includes "the provision of attendant care services". "Attendant care services" is defined in s 3 of the Act to include "domestic services". Accordingly, such services fall within s 58 and, where there is a disagreement between a claimant and an insurer, is a "medical assessment matter" for the purposes of that provision. The status of an assessment by a medical assessor is set out in s 61 of the MAC Act and a certificate "as to a medical assessment matter is conclusive evidence as to the matters certified in any court proceedings or in any assessment by a claims assessor in respect of the claim concerned" - s 61(2).
40CARS assessor White assessed damages for past attendant care services on the basis of a need for an average of 30 hours per week on a gratuitous basis from the date of the accident (14 December 2007) to the date of the CARS Assessment Conference (3 September 2012) and 23 hours per week, 6 hours of gratuitous care and 17 hours paid care on a commercial basis for the future.
41NRMA Insurance submitted that the CARS assessment is contrary to the specific determination of Dr Gibson, that such a need for past assistance was not reasonable and necessary and did not relate to the injuries caused by the motor accident. It is submitted that Dr Gibson's Certificate was "conclusive evidence" as to those matters and was binding on the assessor (my emphasis added). In oral submissions, senior counsel expanded this submission to probably also include future care (T4.43).
42Senior counsel for Mr Smith submitted that the question asked of the assessor was whether 28.5 to 34 hours was reasonable and necessary for a range of attendant care services to which Dr Gibson said it was not reasonable or necessary. The Certificate was therefore conclusive as to the matters certified. However, he says in oral submissions that the CARS assessor had regard to the evidence and the totality of the medical evidence and that the allowance made in respect of care is not necessarily inconsistent with the Certificate.
43I accept that driving was not specified in the listed activities for which attendant care was to be assessed. Hence, the activity of driving was not considered by Dr Gibson when assessing whether 28.5 to 34.5 hours of past domestic care was reasonable and necessary. Senior Counsel for Mr Smith submitted that if driving was excluded from Dr Gibson's assessment of past domestic care, that care would be 23 hours and this calculation is not inconsistent with the Certificate issued by the CARS assessor that assessed past attendant care at 30 hours.
44It is fair to say that the CARS assessor does not refer to the earlier determination of Dr Gibson in her reasons. The CARS assessor determined that Mr Smith had required 30 hours per week for past attendant care. Counsel for NRMA submitted that these findings are inconsistent with the determination of Dr Gibson and in support of that proposition referred to Allianz Australia Insurance Ltd v Girgis [2011] NSWSC 1424.
45In Allianz Australia Insurance Ltd v Girgis, Adams J considered the effect of an earlier determination of a medical assessor had upon a latter determination by a CARS assessor. The facts were that Ms Girgis claimed that she required six hours a week of domestic services from 30 May 2008 and would require six hours a week of such assistance in the future and continuing for a period of 20 years. Allianz denied that any such need was caused by the motor accident nor that the claim for domestic assistance was reasonable and necessary. This dispute was sent to a medical assessor for assessment.
46In Girgis, on 21 October 2010, the medical assessor issued a certificate under s 61 of the Act certifying that the injuries to the cervical and lumbar spine in the accident did not cause a need for domestic assistance of six hours a week from 30 May 2008 and would not cause a need for six hours a week of domestic assistance in the future. The medical assessor further certified that six hours a week of domestic assistance from 30 May 2008 to the date of his assessment was not reasonable and necessary in the circumstances, nor was the six hours a week of assistance proposed by Ms Girgis from the date of the assessment continuing for a period of 20 years reasonable and necessary.
47The medical assessor, in Girgis, found that the injuries to the cervical and lumbar spines caused by the motor accident did cause a need for domestic assistance of two hours a week from 30 May 2008 until the date of his assessment and would cause a need for assistance of two hours a week for a period of six months. The medical assessor considered that this domestic assistance was "reasonable and necessary in relation to the injuries sustained in the subject accident". Hence, the medical assessor assessed that Ms Girgis required not six but the lesser amount of two hours per week of domestic assistance. The medical assessor stated that he was "satisfied that there is sufficient evidence to link the subject accident with a low back injury and that Ms Girgis has sustained an aggravation of her pre-existing cervical spondylosis".
48Adams J in Girgis stated at [45] to [48]:
"[45] It is clear, in relation to domestic assistance, that the questions posed by s 58(1)(a) and (b) require consideration of the actual matters in disagreement. In respect of the statutory questions the answers, plainly enough, could be either yes or no. No doubt a process of reasoning is required resulting in those answers, s 61(9) making this requirement explicit and mandatory. In substance, it is submitted on behalf of Ms Girgis, that the only matter certified is the direct answer to the questions posed and not any part of the underlying reasoning.
[46] No doubt, it would be appropriate for the Medical Assessor to specify, in respect, say, of domestic assistance, the extent he or she thought it related to the injury caused by the motor accident and what would be reasonable and necessary in the circumstances. This, however, would depend on the nature of the disagreement. It might be that each competing proposal was so unreasonable that the Medical Assessor could explain why this was so and not think it necessary to specify, say, what would be reasonable and necessary in the circumstances.
[47] The matter certified in the present case by Dr Menogue [the medical assessor] is that 'six hours per week of gratuitous domestic assistance from 30 May 2008 until the date of the assessment was not causally related to the injuries sustained in the subject accident' and that 'six hours per week of paid domestic assistance from the date of assessment and continuing for a period of 20 years is not causally related to the injuries sustained in the subject accident' together with his concomitant findings that the six hours per week of gratuitous domestic assistance for the past and paid domestic assistance for the ensuing 20 years was neither reasonable and necessary nor related to the injuries sustained in the accident.
[48] It is important to note that the questions posed by paras (a) and (b) of the subsection are narrowly phrased, pointing to 'the treatment provided or to be provided' and 'such treatment' (emphasis added). This is a reference, to my mind, to the treatment proposed by the contending parties and not in the abstract. If it had been intended to permit a Medical Assessor to certify as to the treatment which, in his or her opinion would be reasonable and necessary and related to the injury caused by the accident, this would have been a simple matter to provide. Its absence fortifies my view of the limited character of the 'medical assessment matter' to which these paragraphs refer, in respect of the certification of which conclusiveness is ascribed. ... In my view, as Assessor Broomfield [the CARS assessor] decided, he was bound by the Medical Assessor's rejection of the appropriateness of the assistance proposed by Ms Girgis but he was not bound to accept the Assessor's view as to the appropriate level of such assistance."
49Hence, a CARS assessor, both in Girgis and these proceedings, is bound by the medical assessor's rejection of the appropriateness of the assistance. The certificate issued by Dr Gibson, in relation to the questions posed and their answers, is conclusive evidence: see s 61(2).
50As previously stated, the CARS assessor made no mention of Dr Gibson's conclusive determination that 28.5 to 34.5 hours of domestic assistance (as defined) for past assistance was not reasonable and necessary in relation to the injuries Mr Smith suffered as a result of the accident. While it is true that the CARS assessor's determination covers both personal and domestic assistance, not just the domestic assistance that was previously determined by Dr Gibson, without any explanation in her reasons it appears that the CARS assessor's determination is inconsistent with the prior conclusive certificate issued by Dr Gibson. It is not clear whether or not the CARS assessor took this earlier conclusive certificate into account in relation to past care. It should also be noted that the CARS assessor did not refer to Dr Gibson's conclusive certificate in her reasons for future care. Dr Gibson's certificate of determination was a relevant consideration and the CARS assessor is bound to take it into account. It is my view that by not mentioning it, the CARS assessor did not provide adequate reasons. She fell into jurisdictional error.