AMA CPT® Assistant - 2002 Issue 6 (June)
Modifier -59 vs Modifier -91 (June 2002)
June 2002 pages 1-3 Modifier -59 vs Modifier -91 Since the introduction of modifier -91, many questions have been raised regarding its use vs modifier -59. Some third-party payers have suggested that modifier -91 can be appended to every laboratory code that is reported more than one time on the same date of service. However, per the CPT coding guidelines, this is not the appropriate method of reporting modifier -91. The purpose of this article is to clarify some of the confusion surrounding the reporting of modifier -91 and modifier -59. We will discuss the intent of these two...
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