Changes in Billing for Drugs of Abuse Testing Codes

March 2015

This article highlights significant changes in billing for drugs of abuse testing codes in the Clinical Laboratory Fee Schedule.

Following Medicare requirements, WSI will utilize the alphanumeric G codes created by Medicare to replace the 2014 CPT codes deleted in 2015. For 2015, providers are to use the G codes in the same manner in which they used the corresponding CPT codes for 2014.

In addition, for some of the drugs of abuse testing codes, CPT did not delete the 2014 code numbers, but revised the instructions or code descriptors in 2015 CPT Manual. For billing in 2015, providers should use the these codes exactly as published in 2014, regardless of the 2015 instruction or code descriptor changes.

View Medicare’s Clinical Laboratory Fee Schedule Final Determinations for the complete explanation of these changes.

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