Billing for iSTAT Creat

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If anyone has a contact in your organization with billing knowledge, we’d appreciate some help.  We want to know: if you use an iSTAT in your imaging department for creatinine prior to contrast studies, are they billed with a QW modifier? Any feedback is appreciated! 

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If they are using the creatinine only cartridge, then yes you would use the QW modifier as that cartridge is waived. We bill that way for all 3 Radiology sites.

Thank you, Terry! This is very helpful.

Curious - what is a QW modifier?  Never heard that term before with regard to billing.

James,  It's a modifier CMS requests to indicate a test is waived.  I don't think it's used if a payer is not a government payer.

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