HCPCS Q4159
Affinity1 square cm
HCPCS Q4159 at a glance
- Code
- Q4159
- Code type
- CPT/HCPCS
- Short descriptor
- Affinity1 square cm
- 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 Q4159?
HCPCS Q4159 is a CPT/HCPCS procedure code. Its official CMS short descriptor is "Affinity1 square cm". In the ASC context it is grouped under ASC Ancillary.
Is HCPCS Q4159 payable in an ambulatory surgery center (ASC)?
HCPCS Q4159 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 Q4159 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.