HCPCS C9901
Endo defect closure gi tract
HCPCS C9901 at a glance
- Code
- C9901
- Code type
- CPT/HCPCS
- Short descriptor
- Endo defect closure gi tract
- 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 HCPCS code C9901?
HCPCS C9901 is a CPT/HCPCS procedure code. Its official CMS short descriptor is "Endo defect closure gi tract". In the ASC context it is grouped under ASC Surgical.
Is HCPCS C9901 payable in an ambulatory surgery center (ASC)?
HCPCS C9901 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 HCPCS C9901 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.