Which punctuation mark between codes in the index of the CPT manual indicates two codes are available?

The correct answer is the comma, which is used in the index of the CPT manual to indicate that two codes are available for selection. When you see a comma between two codes, it signifies that both codes are appropriate options for a given procedure or service. This is particularly helpful when there are multiple codes that may apply, allowing the coder to choose the most accurate code based on the specific clinical scenario.

The other punctuation marks serve different purposes in the coding system. A hyphen is used to denote a range of codes, indicating that the codes listed before and after the hyphen represent a continuum of related codes. The semicolon often separates instructional notes or modifies a code description without indicating additional options. A colon is typically used to introduce a list of codes or to specify further explanations regarding the code. Understanding the function of each punctuation mark is essential for accurate coding and selection of the proper procedures in billing and documentation.