Summary & Overview
CPT 80334: Multi-Analyte Serotonergic Antidepressant Panel
CPT code 80334 denotes a multi-analyte laboratory assay that detects and/or quantifies six or more serotonergic antidepressant medications in a patient specimen. The code is used where clinicians or toxicology services need comprehensive detection of multiple psychiatric medications for clinical management, safety monitoring, or forensic purposes. Nationally, this code matters because it standardizes reporting for complex psychotropic drug panels and affects how clinical laboratories bill for broad-spectrum antidepressant testing. Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will learn what CPT code 80334 represents, the clinical and laboratory context for its use, and which major payers are commonly relevant to coverage discussions. The publication provides benchmarks and policy-oriented context where available, outlines typical sites of service for the assay, and summarizes implications for laboratory billing workflows and clinical interpretation. Data not available in the input is noted where specific payer policies, taxonomies, ICD-10 pairings, or related codes would normally be detailed.
Billing Code Overview
CPT code 80334 describes a laboratory test in which the analyst measures the amount of, or detects the presence of, six or more serotonergic antidepressant medications in a patient specimen. This service is a multi-analyte toxicology assay for serotonergic antidepressants used to identify and quantify multiple psychiatric medications simultaneously.
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Service type: Clinical laboratory toxicology assay
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Typical site of service: Clinical laboratory or hospital laboratory setting
Clinical & Coding Specifications
Clinical Context
A 42-year-old patient with a history of major depressive disorder and recent changes in medication presents to an outpatient behavioral health clinic after partial response to therapy and concern for polypharmacy and drug interactions. The treating psychiatrist orders a comprehensive toxicology panel specifically to measure or detect six or more serotonergic antidepressants in the patient’s blood to confirm adherence, identify potential serotonergic exposure, and evaluate risk for serotonin syndrome. The specimen is collected in the clinic or a phlebotomy collection center and sent to a clinical laboratory with toxicology capabilities. The lab analyst performs a multi-analyte assay (qualitative and/or quantitative) that detects the presence and relative amounts of multiple serotonergic antidepressants and documents findings in the laboratory information system. Results are returned to the ordering clinician for medication reconciliation and management decisions.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier applicable (placeholder) | Rarely appended; use only if payer-specific guidance requires a default modifier. |
22 | Increased procedural services |