memberships and insurance visits

For when someone is on a membership and they are also claiming a third party such as medicare (in Australia) that has different invoice billing coding to a normal adjustment - is there a way if the third party payment is a 'listed' visit type for the membership billing that the visit can be correctly coded for the third party? For example, at the moment for those of our clients who are on a membership, if they want to claim a reimbursement on their third party/medicare visits we have to process it the appointment, then go in a manually alter the receipt, and the patient gets 2 invoices.