Question 1

What is HCPCS code G0479?

Accepted Answer

HCPCS code G0479 is "Drug test presump not opt". 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

Question 2

What category is G0479 in?

Accepted Answer

G0479 belongs to HCPCS Category G (Procedures/Professional Services).

Question 3

When should I use HCPCS code G0479?

Accepted Answer

Use G0479 when billing for drug test presump not opt. HCPCS Level II codes like this are used for items and services not covered by CPT codes, including medical supplies, equipment, drugs administered in clinical settings, and certain healthcare services.

Question 4

Is G0479 covered by Medicare?

Accepted Answer

Coverage for G0479 (Drug test presump not opt) depends on medical necessity and specific Medicare guidelines. Check the applicable Local Coverage Determination (LCD) or National Coverage Determination (NCD) for detailed coverage criteria. Private insurers may have different coverage policies.

Question 5

What documentation is required for G0479?

Accepted Answer

Documentation for G0479 should include: the medical necessity for the item or service, supporting diagnosis codes (ICD-10), prescription or order from the treating physician, and proof that the item meets quality standards. Some items may require additional documentation like a Certificate of Medical Necessity (CMN).