Insurance companies often require a product code called a HCPCS code for claims related to your CPAP purchases. Below is a detailed list of codes your insurance company may need to quickly process your claim.E0601 - CPAP machine purchase,A7034 - CPAP nasal mask,A7032 - CPAP nasal mask cushion,A7030 - CPAP Full Face mask,A7031 - CPAP Full Face mask cushion,A7044 - CPAP Full Oral Interface,A7046 - CPAP Humidifier Chamber,A7037 - CPAP tubing, long and short hoses,A7038 - CPAP disposable filter,A7039 - CPAP foam filter,A7035 - CPAP headgear,A7033 - CPAP nasal pillows,A7036 - CPAP chinstrap,E0561 - CPAP Passover Humidifier,E0562 - CPAP Heated Humidifier,E0470 - BiPAP purchase,E0471 - BiPAP-ST purchase,E1399 - CPAP Miscellaneous,We also offer this handy reference information of helpful hints when filing HCPCS codes with your insurance company. This information can be used for any manufacturer.