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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