HCPCS A9526
Nitrogen n-13 ammonia
HCPCS A9526 at a glance
- Code
- A9526
- Code type
- CPT/HCPCS
- Short descriptor
- Nitrogen n-13 ammonia
- Category
- ASC Ancillary
- ASC payment status
- Payable in an ASC (ancillary)
- CMS addendum
- BB (Ancillary)
- Typical setting
- Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
What is HCPCS code A9526?
HCPCS A9526 is a CPT/HCPCS procedure code. Its official CMS short descriptor is "Nitrogen n-13 ammonia". In the ASC context it is grouped under ASC Ancillary.
Is HCPCS A9526 payable in an ambulatory surgery center (ASC)?
HCPCS A9526 is a covered ancillary service (CMS Addendum BB). Medicare reimburses it in the ASC setting when it is integral to a covered ASC surgical procedure.
Where is HCPCS A9526 typically performed?
Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
Reference information compiled from the CMS April 2026 ASC payment addenda (AA, BB, EE). Codes, descriptors, and ASC payment status change with each CMS update. This is a coding reference, not billing, coding, or legal advice. Always verify against the current CMS addenda and individual payer policy before billing. CPT is a registered trademark of the American Medical Association.