Did Medicare purchase the chair? If it was paid by another source you will need all the information to send to Medicare since that chair will not be on file with them. Also you may want to call the IVR to see if they have any chairs on file with Medicare before submitting a claim for repairs. You can hit option 2 then 3 to check for CMN status and use the code k0011 and it will search for any wheelchairs on file if that chair wasn't purchased by them. Some clients have chairs from private sources, one paid by medicare, and will try to have a vendor repair the one from the private source because they now have one on file with medicare and they won't pay for a back up chair.