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Q&A: Correct use of modifiers -80 and -AS

QUESTION: Can you explain the difference between modifier -80 (assistant at surgery by another physician) and –AS (physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery)? Medicare requires us to use both modifiers for our physician assistants. We have been instructed to use -AS first and -80 second for all Medicare claims submissions. Is this correct?

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