Which modifier indicates the service was required by a third-party payer or regulatory body?

The correct modifier that indicates a service was required by a third-party payer or regulatory body is the -32 modifier. This specific modifier is used to signify that a service was mandated or authorized by an outside source, such as an insurance company, government entity, or another regulatory body. By applying the -32 modifier, healthcare providers can communicate to payers that the procedure or service was not merely elective but rather a necessary action requested under certain conditions, ensuring that the claim is processed accurately according to the requirements set by the payer.

The other modifiers serve different purposes:

• Modifier -51 is used to indicate multiple procedures performed during the same session and does not relate to third-party requirements.

• Modifier -24 is used for reporting an unrelated evaluation and management service during the postoperative period, which does not pertain to the necessity of the service by a third party.

• Modifier -26 indicates professional components of a service, focusing on the interpretation or analysis rather than the necessity enforced by an external authority.

Understanding the specific use of modifiers like -32 is crucial for proper billing and coding, as it helps ensure compliance with payer requirements.