CPT G0477, CPT G0478, CPT G0479

How To Code Presumptive Drug Testing (CPT G0477, CPT G0478 & CPT G0479)

CPT G0477, CPT G0478 & CPT G0479 can be used to report presumptive drug testing. The descriptions and reimbursement for Presumptive Drug Testing can be found below.

CPT Codes For Presumptive Drug Testing

Presumptive drug testing (CPT G0477, CPT G0478 & CPT G0479) is used to detect the presence of a drug in a urine sample. The test is performed by a provider with Certification of Waiver or a Medical Test Site Accredited License. Findings are reported qualitatively as either positive or negative.

CPT G0479

Description of CPT G0479: Drug test(s), presumptive, any number of drug classes; any number of devices or procedures by instrumented chemistry analyzers utilizing immunoassay, enzyme assay, TOF, MALDI, LDTD, DESI, DART, GHPC, GC mass spectrometry), includes sample validation when performed, per date of service.

CPT G0478

Description of CPT G0478: Drug test(s), presumptive, any number of drug classes; any number of devices or procedures, (e.g., immunoassay) read by instrument-assisted direct optical observation (e.g., dipsticks, cups, cards, cartridges), includes sample validation when performed, per date of service.

CPT G0477

Description of CPT G0477: Drug test(s), presumptive, any number of drug classes; any number of devices or procedures, (e.g., immunoassay) capable of being read by direct optical observation only (e.g., dipsticks, cups, cards, cartridges), includes sample validation when performed, per date of service.

Reimbursement For Presumptive Testing

Presumptive codes CPT G0477, CPT G0478 & CPT G0479 are eligible for reimbursement when testing is performed in an office, laboratory or facility setting.  These CPT codes are not eligible for reimbursement for chemical dependency facilities. Reimbursement for CPT G0477, CPT G0478 & CPT G0479 is limited to one unit per day. Only one of the three CPT codes may be billed per day.

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