Question: Michigan Subscriber Answer: However since there is no such prior arrangements between the hospice provider and your gastroenterologist, it is best to again try to re-bill the insurance payer. You will need to append one of these suitable modifiers to the CPT® codes that you have used to bill initially for the services rendered by your gastroenterologist. You have to append the modifier GV (Attending physician not employed or paid under arrangement by the patient's hospice provider) or GW (Service not related to the hospice patient's terminal condition) to let the insurance payer know that the hospice is not reimbursing your gastroenterologist in any manner for the services rendered. This will also inform the payer that the hospice is not eligible to bill for the services rendered by your gastroenterologist.