G6001 — Ultrasonic guidance for placement of radiation therapy fields
G6001 is a HCPCS Level II code for ultrasonic guidance for placement of radiation therapy fields. It belongs to the Procedures and Professional Services (Temporary) section. It was terminated on December 31, 2025 and is not valid on new claims.
This code has been terminated
CMS terminated G6001 on December 31, 2025. It stays in the file as history — a claim you are auditing from before that date may legitimately carry it — but it must not appear on a new claim. The adjacent codes below are the usual place to look for its replacement.
Medicare coverage: Special coverage instructions apply
There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
The CMS record for G6001
- Long descriptor
- Ultrasonic guidance for placement of radiation therapy fields
- Short descriptor
- Echo guidance radiotherapy
- Added
- January 1, 2015
- Terminated
- December 31, 2025
- BETOS
- I3F
- Pricing indicator
- 13 — Physician fee schedule
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
When CMS retired it.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Price established by carriers — not otherwise classified, individual determination, or carrier discretion.
Codes adjacent to G6001
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If G6001 is not quite right, the correct code is very often within a few positions of it.
- G4031Radiation oncology mips specialty set
- G4032Rheumatology mips specialty set
- G4033Skilled nursing facility mips specialty set
- G4034Speech language pathology mips specialty set
- G4035Thoracic surgery mips specialty set
- G4036Urgent care mips specialty set
- G4037Urology mips specialty set
- G4038Vascular surgery mips specialty set
- G6002Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapyterminated
- G6003Radiation treatment delivery, single treatment area, single port or parallel opposed ports, simple blocks or no blocks: up to 5 mevterminated
- G6004Radiation treatment delivery, single treatment area, single port or parallel opposed ports, simple blocks or no blocks: 6-10 mevterminated
- G6005Radiation treatment delivery, single treatment area, single port or parallel opposed ports, simple blocks or no blocks: 11-19 mevterminated
- G6006Radiation treatment delivery, single treatment area, single port or parallel opposed ports, simple blocks or no blocks: 20 mev or greaterterminated
- G6007Radiation treatment delivery, 2 separate treatment areas, 3 or more ports on a single treatment area, use of multiple blocks: up to 5 mevterminated
- G6008Radiation treatment delivery, 2 separate treatment areas, 3 or more ports on a single treatment area, use of multiple blocks: 6-10 mevterminated
- G6009Radiation treatment delivery, 2 separate treatment areas, 3 or more ports on a single treatment area, use of multiple blocks: 11-19 mevterminated
Questions about G6001
What is HCPCS code G6001?
G6001 is a HCPCS Level II code for ultrasonic guidance for placement of radiation therapy fields. It sits in the Procedures and Professional Services (Temporary) section.
Does Medicare cover G6001?
The CMS HCPCS file marks G6001 as "Special coverage instructions apply". There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.
Is G6001 still valid?
No. G6001 was terminated on December 31, 2025 and should not be used on new claims.