HCPCS A9559
Co57 cyano
Last reviewed August 2026 · DataLily AI data team
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HCPCS A9559 at a glance
- Code
- A9559
- Code type
- CPT/HCPCS
- Short descriptor
- Co57 cyano
- Category
- ASC Ancillary
- ASC eligibility
- ASC-eligible (ancillary)
- Typical setting
- Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
What is HCPCS code A9559?
HCPCS A9559 is a CPT/HCPCS procedure code for Co57 cyano. Its official short descriptor is "Co57 cyano". In the ASC context it is grouped under ASC Ancillary.
Is HCPCS A9559 eligible in an ambulatory surgery center (ASC)?
HCPCS A9559 is an ancillary service that can be provided in the ASC setting when it supports a surgical procedure.
Where is HCPCS A9559 typically performed?
Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
Reference information about ASC eligibility and typical procedure setting. Codes, descriptors, and ASC-eligibility status change over time. This is a coding reference, not billing, coding, or legal advice. Always verify against current guidance and individual payer policy before scheduling or billing. CPT is a registered trademark of the American Medical Association. Read the DataLily AI data methodology.