The number of service field shows how many services were billed per procedure code. If any modifiers were billed, they will be located in this field. If the patient account number is reported on the claim, Medicare will display that number in this field. This amount is based on the Medicare Fee Schedule. This is the coinsurance field.
Group codes represent the financially responsible party.
Reason codes explain denials and payments. These combinations of codes are defined in the glossary at the bottom of the Standard Provider Remittance. An on line reference is available for your convenience is available for your convenience, as well as a full listing in chapter 21. Under the assignment indicator are the non-covered service amounts. These amounts will equal the difference between the billed amount and allowed amount.