This article will present scenarios for use of Healthcare Common Procedure Coding System modifiers XE, XP, XS, and XU for use following the January 5, 2015, implementation date. Scenarios are based on the modifiers as published in August 2014 and do not include any instructions from the Centers for Medicare & Medicaid Services (CMS), Medicaid, or private health plans published after August 2014. Please see individual payer instructions as published for additional information, as individual payers may adopt the use of these modifiers at different times and may apply the modifiers for different edits.

It is important to note that modifiers XE, XP, XS, and XU are used in lieu of modifier 59, distinct procedural service, and are not appended to a code for an evaluation and management (E/M) service.

The following examples are provided to help illustrate use of modifiers XE, XP, XS, and XU when reporting a procedural...

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