What are Revenue Codes used for on UB-04?

• A. They indicate room and board charges only.
• B. They classify charges by department or service line and are attached to each service line.
• C. They identify the payer for each line.
• D. They encode the patient's primary diagnosis.

Answer: (B)

Revenue Codes act as labels for the charges, showing which department or service line provided or billed for each item and are attached to every service line on the UB-04. They organize the bill by cost centers—room and board, laboratory, radiology, anesthesia, and so on—so the payer and the hospital can see exactly where each charge belongs. This labeling helps with internal accounting and external payment processing by mapping services to their respective departments. Revenue codes focus on where care was delivered, not who pays for it or what the patient’s diagnosis is. Payer information sits elsewhere, and diagnosis is captured with ICD-10-CM codes.