CPT 20604
Drain/inj joint/bursa w/us
CPT 20604 at a glance
- Code
- 20604
- Code type
- CPT
- Short descriptor
- Drain/inj joint/bursa w/us
- Category
- ASC Surgical
- ASC payment status
- Payable in an ASC (surgical)
- CMS addendum
- AA (Surgical)
- Typical setting
- Ambulatory surgery center (POS 24); also commonly performed in an office or clinic (POS 11).
What is CPT code 20604?
CPT 20604 is a CPT procedure code. Its official CMS short descriptor is "Drain/inj joint/bursa w/us". In the ASC context it is grouped under ASC Surgical.
Is CPT 20604 payable in an ambulatory surgery center (ASC)?
CPT 20604 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 20604 typically performed?
Ambulatory surgery center (POS 24); also commonly performed in an office or clinic (POS 11).
Which specialties use CPT 20604?
CPT 20604 is most associated with Anesthesiology – Pain Medicine, General Surgery, IM – Rheumatology, Interventional Pain Medicine, among others.
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.