CPT 29870
Arthrs knee dx w/wo syn bx
CPT 29870 at a glance
- Code
- 29870
- Code type
- CPT/HCPCS
- Short descriptor
- Arthrs knee dx w/wo syn bx
- Category
- ASC Surgical
- ASC payment status
- Payable in an ASC (surgical)
- CMS addendum
- AA (Surgical)
- Typical setting
- Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
What is CPT code 29870?
CPT 29870 is a CPT/HCPCS procedure code. Its official CMS short descriptor is "Arthrs knee dx w/wo syn bx". In the ASC context it is grouped under ASC Surgical.
Is CPT 29870 payable in an ambulatory surgery center (ASC)?
CPT 29870 appears on Medicare's ASC Covered Procedures List (CMS Addendum AA), so Medicare reimburses it when the surgery is performed in a certified ambulatory surgery center.
Where is CPT 29870 typically performed?
Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
Which specialties use CPT 29870?
CPT 29870 is most associated with General Surgery, Ortho – Sports Medicine, Orthopaedic Surgery.
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.