CPT 21920
Biopsy soft tissue of back
CPT 21920 at a glance
- Code
- 21920
- Code type
- CPT/HCPCS
- Short descriptor
- Biopsy soft tissue of back
- 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 21920?
CPT 21920 is a CPT/HCPCS procedure code. Its official CMS short descriptor is "Biopsy soft tissue of back". In the ASC context it is grouped under ASC Surgical.
Is CPT 21920 payable in an ambulatory surgery center (ASC)?
CPT 21920 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 21920 typically performed?
Ambulatory surgery center (POS 24); also commonly performed in an office or clinic (POS 11).
Which specialties use CPT 21920?
CPT 21920 is most associated with General Surgery, 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.