AMA CPT® Assistant - 1999 Issue 4 (April)

Modifier -20, (Q&A) (April 1999)

April 1999 page 11 Coding Consultation Modifier -20, (Q&A) Question With the deletion of the -20 modifier from CPT 1999, how is use of the operating microscope now reported? AMA Comment Use of the operating microscope is now reported with a new add-on code, 69990. Code 69990 should be reported (without the -51 modifier appended) in addition to the code for the primary procedure performed. This code should not be used to report visualization with magnifying loupe or corrected vision. It is important to note that code 69990 is not to be reported in addition to procedures where...

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CPT® Assistant content is the official source for CPT® coding guidance. It is an instrumental tool when appealing insurance denials and validating coding to auditors. Monthly issues and an extensive archive provide comprehensive guidance on proper CPT® coding for past, present and upcoming code set releases. Archives date back to 1990 for historical use of codes, changes, rationales, coding tips and trends in the industry.

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