In this case I would ask the insurance carrier what they want you to use coding-wise to get the claim processed, since they are apparently not following any conventional coding for ice packs that are not administered to the patient. You know they will not cover it but you have to be able to at least submit the charges in a format they will process, and you can't read their minds. Usually when you put it this way they're willing to help you out with the specifics, or at least put you in contact with someone who can answer the question. Maybe they prefer an NOS code with an ice pack description.