Question 1

What is HCPCS code G9840?

Accepted Answer

HCPCS code G9840 is "Gene testing performed". Ras (kras and nras) gene mutation testing performed before initiation of anti-egfr moab

Question 2

What category is G9840 in?

Accepted Answer

G9840 belongs to HCPCS Category G (Procedures/Professional Services).

Question 3

When should I use HCPCS code G9840?

Accepted Answer

Use G9840 when billing for gene testing performed. 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 G9840 covered by Medicare?

Accepted Answer

Coverage for G9840 (Gene testing performed) 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 G9840?

Accepted Answer

Documentation for G9840 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).