Which modifier indicates a bilateral procedure?

The correct answer is the modifier indicating a bilateral procedure, which is Modifier 50. This modifier is specifically used to denote that a procedure was performed on both sides of the body. It helps to clarify that the service should be considered as a single comprehensive procedure rather than two separate ones, which is important for billing and documentation purposes. By using Modifier 50, healthcare providers are able to communicate effectively with payers regarding the nature of the surgical or procedural intervention, ensuring that reimbursement aligns with the service provided.

In contrast, other modifiers listed have different meanings. Modifier 51 is utilized to indicate multiple procedures, Modifier 52 signifies a reduced procedure, and Modifier 53 indicates that a procedure was aborted. Each of these has its own specific purpose and application that does not relate to procedures conducted bilaterally.