Question 1

What is HCPCS code A9900?

Accepted Answer

HCPCS code A9900 is "Supply/accessory/service". Miscellaneous dme supply, accessory, and/or service component of another hcpcs code

Question 2

What category is A9900 in?

Accepted Answer

A9900 belongs to HCPCS Category A (Transportation, Medical/Surgical Supplies, Miscellaneous).

Question 3

When should I use HCPCS code A9900?

Accepted Answer

Use A9900 when billing for supply/accessory/service. 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 A9900 covered by Medicare?

Accepted Answer

Coverage for A9900 (Supply/accessory/service) 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 A9900?

Accepted Answer

Documentation for A9900 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).