G1001 HCPCS Level II code: Clinical decision support mechanism evicore, as defined by the medicare appropriate use criteria program
CMS terminated G1001: its last date of service was Dec 31, 2024. It stays here for looking up older claims; newer services need a current code.
Official description
G1001Clinical decision support mechanism evicore, as defined by the medicare appropriate use criteria program
Short description: Cdsm evicore
HCPCS · United States
Medicare details
The indicators CMS publishes with G1001 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)
- Type of service
- Medical care
- BETOS category
- Undefined codes
- Added
- Jan 1, 2020
- Terminated after
- Dec 31, 2024
Where G1001 sits
- 1G codesProcedures and professional services
- 2Terminated G1001Clinical decision support mechanism evicore, as defined by the medicare appropriate use criteria program
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
Is HCPCS code G1001 still valid?
No. CMS terminated G1001; its last date of service was Dec 31, 2024. It is listed for looking up services from before then. Use a current code for newer services.
Does Medicare cover G1001?
CMS lists G1001’s Medicare coverage as “Carrier judgment” and its pricing as “Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)”. 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 G1001
All G codesG0918Satisfaction with care not achieved within 90 days following cataract surgeryG0919Influenza immunization ordered or recommended (to be given at alternate location or alternate provider); vaccine not available at time of visitG0920Type, anatomic location, and activity all documentedG0921Documentation of patient reason(s) for not being able to assess (e.g., patient refuses endoscopic and/or radiologic assessment)G0922No documentation of disease type, anatomic location, and activity, reason not givenG1000Clinical decision support mechanism applied pathways, as defined by the medicare appropriate use criteria programG1002Clinical decision support mechanism medcurrent, as defined by the medicare appropriate use criteria programG1003Clinical decision support mechanism medicalis, as defined by the medicare appropriate use criteria programG1004Clinical decision support mechanism national decision support company, as defined by the medicare appropriate use criteria programG1005Clinical decision support mechanism national imaging associates, as defined by the medicare appropriate use criteria programG1006Clinical decision support mechanism test appropriate, as defined by the medicare appropriate use criteria programG1007Clinical decision support mechanism aim specialty health, as defined by the medicare appropriate use criteria program