Question 1

What is HCPCS code C9791?

Accepted Answer

HCPCS code C9791 is "Mri hyperpolarized xenon129". Magnetic resonance imaging with inhaled hyperpolarized xenon-129 contrast agent, chest, including preparation and administration of agent

Question 2

What category is C9791 in?

Accepted Answer

C9791 belongs to HCPCS Category C (CMS Hospital Outpatient Payment).

Question 3

When should I use HCPCS code C9791?

Accepted Answer

Use C9791 when billing for mri hyperpolarized xenon129. 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 C9791 covered by Medicare?

Accepted Answer

Coverage for C9791 (Mri hyperpolarized xenon129) 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 C9791?

Accepted Answer

Documentation for C9791 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).