CPT code 80324: Amphetamine testing, 1 or 2 substances2026 Medicare rate & RVUs in Texas

CMS doesn’t publish an office rate for 80324 in Texas.

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

What 80324 covers

80324 represents definitive laboratory drug testing for one or two substances in the amphetamine class. A clinician orders the analysis when specific drug identification is needed, and a clinical laboratory performs or reports the testing. The code is selected by the number of amphetamine-class substances analyzed; it is not a broad panel code for unrelated drug classes. The count distinguishes 80324 from the higher-count amphetamine codes.

Medicare marks 80324 not valid for Medicare (status I) and uses a different code to report and pay for the service. 80324 is a CPT Category I code, but it is not the Medicare reporting code for this service. Codes 80306 and 80307 describe presumptive drug testing, whereas 80324 represents definitive testing. The one-or-two distinction selects the code based on substances tested, not specimens submitted.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

Where 80324 pays more and less in Texas

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

8 of 8 payment localities

How the 80324 rate is calculated

Each of 80324’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

Payment rules and modifiers for 80324

80324 has no global surgery period, no multiple-procedure, bilateral or assistant-at-surgery adjustment, and no professional/technical split. What changes the payment is where the service happens: the place of service on the claim decides whether Medicare pays the office or the facility rate.

80324 compared with similar codes

How to choose

80325Amphetamine testing3 or 4 analytes

Both represent definitive testing in the amphetamine class; 80325 is selected for three or four substances rather than one or two.

80326Amphetamine testingFive or more

Select 80326 for five or more amphetamine-class substances; 80324 is for one or two.

80306Drug screenInstrument-assisted optical read

80306 describes presumptive instrumented drug testing; 80324 represents definitive testing for one or two amphetamine-class substances.

Codes related to 80324

Related codes aren’t interchangeable: bill the code that matches the service performed.

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Open CMS sourceHow we calculate rates