CPT® Code 80377

The CPT® Code 80377 refers to a laboratory test that is conducted to definitively, qualitatively, or quantitatively measure seven or more drug(s) or substance(s) that are not otherwise specified. This code is utilized in scenarios where a comprehensive analysis of multiple substances is required, allowing healthcare professionals to obtain critical information regarding a patient's exposure to various drugs. The testing methodologies commonly employed for this purpose include gas chromatography, liquid chromatography, and tandem mass spectrometry, either individually or in combination. These advanced techniques enable precise identification and quantification of substances, which is essential for effective patient management and treatment decisions. It is important to note that this code is part of a broader coding system where code 80375 is designated for testing 1-3 drugs or substances, and code 80376 is applicable for 4-6 drugs or compounds. Therefore, CPT® Code 80377 specifically addresses the need for extensive drug screening when multiple substances are suspected or need to be monitored in a patient's sample.