The patient records of islanders who use the rheumatology services are being reviewed after concerns were raised about their record-keeping, case management and communication.
The audit could see some patients have changes to their care plans because their current one isn't suitable to their 'individual needs'.
But the Medical Director for HCS, Patrick Armstrong says people shouldn't be worried as many patients have already seen the necessary changes to their treatment.
"My advice is that people should continue with their current regime and if we have any concerns we will contact them and bring them in on an individual basis.
I want to stress that many of the treatments are the right ones and it is important not to stop those."
The audit is expected to be finished by June.
It follows a review by the Royal College of Physicians, which was commissioned as part of a wider review into the island's health service following a damning report last summer which found a toxic environment in the hospital.

Jersey U-turns on import ban on used petrol and diesel vehicles by 2030
Search continues for Les Creux Pavilion tenant
'Momentous' week in Jersey's States
Plans to charge wealthiest patients for medical travel
Railway Walk reopens 'several weeks' ahead of schedule
New bar opening at former Rojo and X site to evolve Jersey's nightlife
Former Chief Minister seeks re-election
Château Vermont to become home to new music campus