By law, yes. we should show the it in the form and infact that reduce physician work of refunding the excess payment and other work related on that process.
Failing to do so and medicare receives many complain that leads the unwanted audit process.
Showing the Amount Collected on the Claims Form
In submitting an assigned claim, the provider (including physicians and suppliers) must show on Form CMS-1500 any amount he/she has collected from the enrollee for these services. This information is essential for correct payment of the benefits due; failure to show the amount paid is likely to result in excessive benefit payment to the provider (including physicians and suppliers) (i.e., a benefit payment which, when added to the amount already paid by the enrollee, will exceed the Medicare allowed amount).
EXAMPLE: The physician accepted assignment of a bill of $300 for covered services and collected $60 from the enrollee, but failed to show on the claim form that he/she had collected anything. The carrier determined the Medicare allowed amount to be $250, and since the deductible had previously been met, made payment of $200 to the physician. Since the physician would have received $190 in benefit payments and the enrollee $10 if the amount collected had been shown on the claim form, the physician has been overpaid $10. When this overpayment comes to light, e.g., by a complaint from the enrollee, the carrier will take necessary corrective action, e.g., advise the physician to refund the $10 to the enrollee and if he/she fails to do so, pay the enrollee the $10 and recover the overpayment from the physician.