How should add-on CPT codes be sequenced relative to primary codes?

How should add-on CPT codes be sequenced relative to primary codes?

• A. They should be reported before the primary code
• B. They should be reported on a separate line with no primary
• C. They should be reported only with a primary code and proper modifiers
• D. They should replace the primary code

Answer: (C)

Add-on CPT codes are supplemental procedures that must be billed in addition to a related primary code; they cannot stand alone. They are linked to the primary procedure to show that extra work was performed beyond the main service. Because of this relationship, add-ons should be reported with the primary code and, when required, with the proper modifiers to indicate how they relate to the primary service. They cannot be reported before the primary code, on a separate line with no primary, or as a replacement for the primary.

Add-on CPT codes are supplemental procedures that must be billed in addition to a related primary code; they cannot stand alone. They are linked to the primary procedure to show that extra work was performed beyond the main service. Because of this relationship, add-ons should be reported with the primary code and, when required, with the proper modifiers to indicate how they relate to the primary service. They cannot be reported before the primary code, on a separate line with no primary, or as a replacement for the primary.