My Dad has come home after serious illness he’s on his own and with palliative care
Who has determined he is in the palliative care stages? Does he have District nurses or e.g. cancer/ Parkinson's nurses visiting him at all?
hospital arranged 4 care visits for 6 weeks
This bit is really important. WHO at the hospital arranged his care? Was it the ward or was it the hospital discharge team (social services).
Did he receive any paperwork advising him that he may be financially charged for the care services. Was he told it would be free for 6 weeks or that it was a 6 week assessment period for rehab etc or anything?
Was he screened using a continuing healthcare (CHC) checklist before he was discharged?
Now social services say Dad has to pay and will backdate payments to the carers first visit. Is this correct
Depending on the answers to the questions above it quite possibly is correct. It shouldn't be coming as a surprise to him though if it is correct, if he genuinely wasn't informed and you challenge this then it may be that they will waive the charges up until the financial assessment date when he was informed.
he’s 91years and can just manage to the toilet with his walker was in hospital for 2 months
Age isn't a factor in whether someone has to pay for their care or not. If someone isn't eligible for CHC funding (fast track or normal) then they are financially assessed to contribute to their care whether they are 19 or 91.
It's highly unlikely based on what you have said so far that he would be eligible for normal CHC funding - but that depends on the nature, complexIty, intensity and unpredictability of his health needs.
Depending on what stage his palliative care needs are at there's a chance he might be eligible for Fast track CHC. This is usually awarded when there is a belief that someone's condition is deteriorating rapidly and they are nearing the end of their life. Anyone awarded Fast Track CHC will usually be reviewed under the full CHC process if they survive beyond 12 weeks after fast track CHC is awarded - the implication being that fast track may not be the appropriate funding stream if their life expectancy is expected to be significantly greater than 12 weeks.