The Original Medicare Fee-for-Service (FFS) Carrier file includes fee-for-service claims submitted by professional providers, including physicians, physician assistants, clinical social workers, nurse practitioners.
Claims for some organizational providers, such as free-standing facilities are also found in the Carrier Claims file. Examples include independent clinical laboratories, ambulance providers, free-standing ambulatory surgical centers and free-standing radiology centers.
Researchers rarely use this file alone.
This file is based on information from the CMS claim form 1500.
