Which modifier is commonly used to indicate a distinct procedure or service?

• A. -25 significant, separate E/M
• B. -50 bilateral procedure
• C. -59 distinct procedure/service
• D. -26 professional component

Answer: (C)

The idea being tested is using a modifier to flag a separate or distinct service when more than one procedure is performed in the same encounter. The best choice is the Distinct Procedural Service modifier, commonly reported as -59. It signals to payers that a second procedure is not simply part of the first one but a separate, identifiable service, often because it involves a different site or a clearly different purpose. This allows for separate payment rather than bundling the two together, provided the documentation supports the separation. For example, if in the same surgical session a different procedure is performed on a different organ or area, you would apply -59 to indicate it is distinct from the other procedure.

Other modifiers have different roles. -25 indicates a significant, separately identifiable Evaluation and Management service on the same day as a procedure, not a separate procedure itself. -50 denotes a bilateral procedure, not that the service is distinct. -26 refers to the professional component of a radiology service, not to a separate procedure.