Ancillary Service Category Codes Table 38 Ancillary Service Category Codes Ancillary Service Category Code Description BF Bundled service BG Baggage fee CF Change fee CG Cargo CO Carbon offset FF Frequent flyer GF Gift card GT Ground transport IE In-flight entertainment LG Lounge MD Medical ML Meal or beverage OT Other PA Passenger assist fee PT Pets SA Seat fees SB Standby SF Service fee ST Store TS Travel service UN Unaccompanied travel UP Upgrades WI Wi-Fi