SA Modifier

melheffley

Networker
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Can someone help me out with when you would use the SA modifier? Our Nurse Midwife assists our MD with c-sections and we want to make sure we are using the appropriate modifier. We have been billing her assistance with the AS modifier. There was a claim that accidentally went out with the modifier as SA. When we researched the SA modifier it states: "Nurse practitioner rendering service in collaboration with a physician".

I have a feeling that the difference between these two is whether the service is surgical or not. Am I correct, the SA would not be appropriate in the surgical setting and is more intended for incident to billing?

Thanks for any help!
 
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