Encounter rate payers that are billed on UB/837I claims require a four-digit revenue code in Field Locator 42 for each line item on the claim. Therefore, a revenue code must be attached to all SIM codes in the 
Service Items library that may be billed on a UB/837I claim. 
  
Note: The Revenue Codes master file in File Maintenance is pre-installed. Items should be reviewed and modified as needed.
  
 
  To add or modify a revenue code for encounter rate billing, do the following: