Modifier 21March 4th, 2009 - Codapedia Editor
Categories: Coding CPT® Coding Modifiers
Modifier 21 was deleted from the 2009 CPT® book. It was a modifier that was not recognized by many payers, and did not give the practice any additional payment.
See the add on, prolonged services codes 99354--99357 to report prolonged services. See the Codapedia articles about this topic.
If you have questions or comments about this article please contact us. Comments that provide additional related information may be added here by our Editors.
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