Which modifier is required to be appended to an E/M service when a decision for surgery is made the day of or the day prior to surgery?

Question

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The -57 modifier is used to indicate that an E/M (Evaluation and Management) service resulted in the decision to perform surgery either the day of or the day before the surgery. This modifier is important for billing purposes to signify that the E/M service was directly related to the decision for surgery, distinguishing it from routine preoperative care.

Which Modifier Is Required to Be Appended to an E/M