Summary & Overview

CPT 80376: Definitive Drug Panel, Four to Six Substances

CPT code 80376 identifies a laboratory toxicology test that measures the presence or amount of four to six definitive drugs in a patient specimen. This targeted panel supports clinical decision-making in settings that require confirmation or monitoring of specific substances, including pain management, substance use disorder care, and perioperative screening. As a standardized CPT laboratory code, 80376 matters nationally for clinical laboratories, hospital systems, and payers when defining coverage, billing, and clinical pathways for focused drug testing.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the code’s clinical context and intended service type, typical sites of service where the test is performed, and the common modifiers used with laboratory services (provided in the input). The publication will also address benchmarking and policy-relevant themes for narrow toxicology panels, payer coverage patterns, and operational considerations for laboratories and ordering clinicians.

What readers will learn: the clinical purpose of a 4–6 analyte definitive drug panel, where the test is typically performed, which national payers commonly interact with this code, and which aspects of utilization and policy frequently influence coverage and billing for targeted toxicology testing. Data not available in the input will be identified as such.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare80376CPTtoxicologydrug-testinglaboratorytoxicology-panelclinical-labspecimen-testing

Billing Code Overview

CPT code 80376 describes a laboratory procedure in which a lab analyst measures the presence or amount of four to six definitive drugs in a patient specimen. The service is a qualitative and/or quantitative drug testing panel focused on detection of a limited set of specified substances.

Service Type: Laboratory — toxicology/drug testing panel

Typical Site of Service: Clinical laboratory or hospital laboratory setting, including outpatient collection sites where specimens are sent to a clinical lab for analysis. If no onsite laboratory testing is performed, specimens may be collected in ambulatory clinic or hospital outpatient locations and forwarded to the laboratory for completion.

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A community hospital laboratory receives a urine specimen from the emergency department for drug testing after a patient presents with altered mental status and suspected acute intoxication. The laboratory performs definitive toxicology testing to quantify specific drugs and metabolites using mass spectrometry. The service reported is 80376, used when the lab measures the presence or amount of four to six definitive drugs in the specimen. Typical workflow: specimen accessioning and chain-of-custody verification, specimen preparation, analysis by LC-MS/MS or GC-MS, result review by a laboratory scientist, and final reporting to the ordering clinician. Typical site of service is an outpatient or hospital clinical laboratory with specialized toxicology instrumentation. A realistic patient scenario: a 34-year-old found unresponsive at home; emergency clinicians order comprehensive toxicology confirmation to identify multiple suspected substances; the lab runs 80376 to detect and quantify four to six target drugs to guide acute management and disposition.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component	Use when reporting only the professional component (interpretation) provided by the laboratory director or pathologist.

Taxonomy Code	Specialty	Notes
207Q00000X	Pathology	Laboratory directors and pathologists who oversee toxicology testing and interpretations.
207RP1001X	Clinical Pathology	Physicians specializing in clinical laboratory medicine who interpret definitive drug testing.
363L00000X	Laboratory – Independent Clinical Laboratory	Independent lab organizations performing high-complexity mass spectrometry testing.
207VP0000X	Medical Toxicology	Specialists who may order and interpret definitive drug panels in complex poisoning cases.
3336C0003X	Emergency Medicine	Emergency physicians who order definitive toxicology testing for acute intoxication.

CPT Code	Description	Relationship to This Procedure
`80377`	Drug confirmation; more than six drug classes, each specimen (e.g., definitive testing for larger panels)	Performed when a larger definitive panel beyond four to six drugs is required; often used when initial `80376` is insufficient.
`80378`	Drug confirmation; alternate methodology or additional confirmatory analytes not covered by `80376`/`80377`	Used for specialized confirmations or additional analytes requiring separate methods.
`80305`	Drug assay, qualitative, e.g., immunoassay, each procedure	Often performed prior to `80376` as a screening test; positive screens are followed by definitive testing reported under `80376`.
`80101`	Drug test(s), presumptive, any number, non-quantitative, multiple drug classes by high complexity method (e.g., presumptive LC-MS)	May be used in facilities that perform presumptive high-complexity testing prior to or instead of definitive confirmation.
`G0480`	Drug screen, definitive, multiple drug classes, each specimen requiring chromatography/mass spectrometry	Alternate HCPCS code used by some payers for definitive drug testing services that correspond clinically to `80376` when billed under different payer rules.

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