How should CPT/HCPCS modifiers be used on UB-04?

• A. Do not use modifiers.
• B. Apply appropriate modifiers to indicate service variations, and ensure consistency with the description and the service.
• C. Attach all possible modifiers to every line item.
• D. Use modifiers only when the payer requests them.

Answer: (B)

Modifiers explain specific variations of a service, so they belong on the UB-04 line item with the CPT/HCPCS code when the service differs from the standard description. They help the payer understand exactly what was performed and whether different payment rules apply. Therefore, apply appropriate modifiers that reflect the actual variation and ensure they align with both the code description and the documented procedure. Avoid adding modifiers when there is no variation, avoid attaching every possible modifier to every line item, and don’t wait for a payer to request them—include them when the service warrants it and is supported by policy and documentation.