Match the description of the claims content with the appropriate CMS 1500 Claim Form box Condition codes Carrier Block Patient Information Aetna PPO, for example Qualifier for referring provider Aetna PPO, for example Insurance Plan Name Insurer's ID number Claim Codes Payer name and address Nine-digit alphanumeric identifier assigned to a patient who is an employee of the federal government claiming work-related condition(s) FECA Number Tonem Identifier signed to patient who is an employee of the federal government Qualifier for referring provider DN