CPT 42821
Remove tonsils and adenoids
Last reviewed August 2026 · DataLily AI data team
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CPT 42821 at a glance
- Code
- 42821
- Code type
- CPT/HCPCS
- Short descriptor
- Remove tonsils and adenoids
- Category
- ASC Surgical
- ASC eligibility
- ASC-eligible (surgical)
- Typical setting
- Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
- Medicare ASC rate
- $1,480.50 national · 2026Q2
What is CPT code 42821?
CPT 42821 is a CPT/HCPCS procedure code for remove tonsils and adenoids. Its official short descriptor is "Remove tonsils and adenoids". In the ASC context it is grouped under ASC Surgical.
Is CPT 42821 eligible in an ambulatory surgery center (ASC)?
CPT 42821 can be performed in a certified ambulatory surgery center.
Where is CPT 42821 typically performed?
Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
What is the Medicare ASC payment rate for CPT 42821?
The national Medicare ASC payment rate for CPT 42821 is $1,480.50 (Medicare ASC Payment System, 2026Q2). This is the national, unadjusted Medicare amount; the amount an individual ambulatory surgery center is paid is adjusted for local wage index and may differ. It reflects Medicare's facility payment only and does not include the surgeon's professional fee.
Which specialties use CPT 42821?
CPT 42821 is most associated with General Surgery.
Reference information about ASC eligibility and typical procedure setting. Codes, descriptors, and ASC-eligibility status change over time. This is a coding reference, not billing, coding, or legal advice. Always verify against current guidance and individual payer policy before scheduling or billing. CPT is a registered trademark of the American Medical Association. Read the DataLily AI data methodology.