CodingQuestion 19 of 100

In CPT, an add-on code is one that:

a.Describes an additional service performed with a primary procedure and cannot be reported alone
b.Replaces the primary procedure code entirely
c.Can only be used for laboratory panels
d.Is always reported without any other code

Explanation

Add-on codes represent services that are always performed in addition to a primary procedure and are typically identified with a plus symbol in CPT. They are exempt from certain multiple-procedure payment reductions and must be reported alongside their primary code. Reporting an add-on code alone will cause a denial.

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