What does the modifier 'PB' refer to?

The modifier 'PB' in the context of the Healthcare Common Procedure Coding System (HCPCS) refers specifically to surgical procedures that are performed on the wrong patient. This modifier is critical for indicating a serious error in surgical practices, specifically when documentation and charges may need to reflect the occurrence of this type of mistake. The use of the 'PB' modifier highlights the importance of patient safety and is associated with protocols that aim to prevent such severe errors in the healthcare system.

In practice, using the 'PB' modifier signifies that the claim being submitted relates to a situation that requires additional scrutiny and potentially has legal implications. This awareness and proper coding ensure that healthcare facilities can address issues of accountability and quality of care appropriately. The other options do not align with the specific definition and application of modifier 'PB' in the coding system.