What is the purpose of modifiers in CPT/HCPCS on the CMS-1500?

• A. They indicate the primary payer
• B. They provide additional information about the service
• C. They determine the date of service
• D. They replace CPT codes when incorrect

Answer: (B)

Modifiers add important context to a CPT/HCPCS code, signaling that the service was performed under special circumstances or in a way that changes how it should be billed. They tell the payer things like whether a service has a professional vs. technical component, was performed bilaterally, or represents a distinct or additional service on the same day. This extra detail helps ensure the claim is processed and reimbursed accurately. The other choices miss the point because the payer is indicated elsewhere on the form, modifiers don’t set the date of service, and they don’t replace a CPT code if something about the service is incorrect.