G0166 HCPCS Level II code: External counterpulsation, per treatment session
G0166 is the HCPCS code for “External counterpulsation, per treatment session” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
G0166External counterpulsation, per treatment session
Short description: Extrnl counterpulse, per tx
HCPCS · United States
Notes for G0166
As CMS prints them, with any note G0166 takes from the headings above it.
Note
- CMS processing note 0078: PROGRAM MEMORANDUM AB-99-51, JULY 1999.
Medicare details
The indicators CMS publishes with G0166 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Special coverage instructions apply
- Medicare pricing
- Physician fee schedule – Price established using national RVUs
- Type of service
- Medical care
- BETOS category
- Minor procedures - other (Medicare fee schedule)
- Added
- Jan 1, 2000
Where G0166 sits
- 1G codesProcedures and professional services
- 2Active code G0166External counterpulsation, per treatment session
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code G0166 mean?
G0166 is the HCPCS code for “External counterpulsation, per treatment session” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover G0166?
CMS lists G0166’s Medicare coverage as “Special coverage instructions apply” and its pricing as “Physician fee schedule – Price established using national RVUs”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside G0166
All G codesG0159Services performed by a qualified physical therapist, in the home health setting, in the establishment or delivery of a safe and effective physical therapy maintenance program…G0160Services performed by a qualified occupational therapist, in the home health setting, in the establishment or delivery of a safe and effective occupational therapy maintenance…G0161Services performed by a qualified speech-language pathologist, in the home health setting, in the establishment or delivery of a safe and effective speech-language pathology…G0162Skilled services by a registered nurse (rn) for management and evaluation of the plan of care; each 15 minutes (the patient's underlying condition or complication requires an rn…G0163Skilled services of a licensed nurse (lpn or rn) for the observation and assessment of the patient's condition, each 15 minutes (the change in the patient's condition requires…G0164Skilled services of a licensed nurse (lpn or rn), in the training and/or education of a patient or family member, in the home health or hospice setting, each 15 minutesG0168Wound closure utilizing tissue adhesive(s) onlyG0173Linear accelerator based stereotactic radiosurgery, complete course of therapy in one sessionG0175Scheduled interdisciplinary team conference (minimum of three exclusive of patient care nursing staff) with patient presentG0176Activity therapy, such as music, dance, art or play therapies not for recreation, related to the care and treatment of patient's disabling mental health problems, per session (45…G0177Training and educational services related to the care and treatment of patient's disabling mental health problems per session (45 minutes or more)G0179Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home…