AMA CPT® Assistant - 2010 Issue 9 (September)

Appendix I: Genetic Testing Code Modifiers (September 2010)

September 2010 page 9dd Appendix I: Genetic Testing Code Modifiers Question: May modifier 1Z, Sarcoma gene, not otherwise specified, be appended to molecular diagnostic codes to report ribonucleic acid (RNA) testing for neoplasms for which no specific modifier exists? Answer: Genetic testing modifier 0Z, Solid tumor gene, not otherwise specified, modifier 1Z, Sarcoma gene, not otherwise specified, or modifier 2Z, Lymphoid/hematopoietic neoplasia, not otherwise specified, would be appropriate to append to molecular diagnostic testing codes depending on the type of neoplasm for which the genetic testing is being performed. Use of modifier 1Z indicates the type of neoplasm being...

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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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