CPT 77334
Design and construction of a complex radiation therapy treatment device
Last reviewed August 2026 · DataLily AI data team
What does CPT 77334 mean?
CPT 77334 reports the design and construction of a complex treatment device used in radiation therapy, such as customized blocks, shields, compensators, or molds. Simple and intermediate devices are reported with 77332 and 77333.
Pilot Analysis
Get the complete CPT 77334 analysis
Tell us where to send it. Our team will prepare an analysis of CPT 77334 covering what payers reimburse across markets and where your rate may sit, and email it to you within 5-10 business days. Need it faster? Book a demo.
CPT 77334 at a glance
- Code
- 77334
- Code type
- CPT/HCPCS
- Short descriptor
- Radiation treatment aid(s)
- Category
- ASC Ancillary
- ASC eligibility
- ASC-eligible (ancillary)
- Typical setting
- Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
- Medicare ASC rate
- $66.80 national · 2026Q2
What is CPT code 77334?
CPT 77334 reports the design and construction of a complex treatment device used in radiation therapy, such as customized blocks, shields, compensators, or molds. Simple and intermediate devices are reported with 77332 and 77333. Its official short descriptor is "Radiation treatment aid(s)", and in the ASC context it is grouped under ASC Ancillary.
Is CPT 77334 eligible in an ambulatory surgery center (ASC)?
CPT 77334 is an ancillary service that can be provided in the ASC setting when it supports a surgical procedure.
Where is CPT 77334 typically performed?
Ambulatory surgery center (POS 24) or hospital outpatient department (POS 22).
What is the Medicare ASC payment rate for CPT 77334?
The national Medicare ASC payment rate for CPT 77334 is $66.80 (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 77334?
CPT 77334 is most associated with Diagnostic Radiology.
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.