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Urine Drug Screen

Mona Posted Thu 24th of October, 2013 15:35:46 PM

I have billed medicare G0434 with and without modifier qw with DX v58.69 and got denied by medicare. What am I doing wrong? Can you help me?

SuperCoder Answered Thu 24th of October, 2013 16:53:53 PM

G0434 should be used to report very simple testing methods, such as dipsticks, cups, cassettes and cards, that are interpreted visually or with the assistance of a scanner, or that are read utilizing a moderately complex reader device outside the instrumented laboratory setting (i.e., non-instrumented devices). This code should also be used to report any other type of drug screen testing using test(s) that are classified as Clinical Laboratory Improvement Amendments (CLIA) moderate complexity test(s), keeping the following points in mind:

• G0434 includes qualitative drug screen tests that are waived under CLIA as well as dipsticks, cups, cards, cassettes, etc., that are not CLIA-waived.

• Laboratories with a CLIA certificate of waiver may perform only those tests cleared by the Food and Drug Administration (FDA) as waived tests. Laboratories with a CLIA certificate of waiver should bill using the QW modifier.

• Laboratories with a CLIA certificate of compliance or accreditation may perform non-waived tests. Laboratories with a CLIA certificate of compliance or accreditation should not append the QW modifier to claim lines.

• Only one unit of service for code G0434 can be billed per patient encounter regardless of the number of drug classes tested and irrespective of the use or presence of the QW modifier on claim lines.

Note that the "per encounter" reporting for G0434 doesn't prevent reporting when a patient is tested in two different settings, such as when a patient tested in the physician's office in the morning later reports to the emergency department and receives a second test.

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