Are you the biller or the coder? If you are the biller and not a coder then you shouldn't append any modifier without either the provider or a coder who has access to the patient's chart advising that it is appropriate. Many billers fall into the trap of "I've got to get the charge paid" but our job as billers is not strictly to get the charge paid. Obviously it is the billers job to make sure that the provider is being reimbursed properly for all services that they are entitled to being reimbursed for. Appending a modifier strictly to get the code paid is fraudulent. The patient's chart must support the services billed, including the modifier. It is certainly ok for a biller to go back to the provider or coder and ask if they meant to include a modifier with the service if you notice something that is not reimbursed without the modifier. Our providers appreciate when we do that for them. Sometimes they forgot to indicate the modifier and checking with them saves an adjustment or corrected claim.
I don't mean to be a "negative Nancy" but it is so important that the biller understand that they are liable if they append modifiers that are not supported.
So with that being said, 93280 is for programming and 93288 is for interrogation. They seem like two separate services that would not require a modifier if performed separately. Did you receive a denial? Or are you just questioning if a modifier would be appropriate?