G4001 HCPCS Level II code: Diagnostic radiology mips specialty set
G4001 is the HCPCS code for “Diagnostic radiology mips specialty set” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
G4001Diagnostic radiology mips specialty set
Short description: Diagnostic rad ss
HCPCS · United States
Medicare details
The indicators CMS publishes with G4001 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, 2022
Where G4001 sits
- 1G codesProcedures and professional services
- 2Active code G4001Diagnostic radiology mips specialty set
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 G4001 mean?
G4001 is the HCPCS code for “Diagnostic radiology mips specialty set” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover G4001?
CMS lists G4001’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 G4001
All G codesG2251Brief communication technology-based service, e.g. virtual check-in, by a qualified health care professional who cannot report evaluation and management services, provided to an…G2252Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services…G3001Administration and supply of tositumomab, 450 mgG3002Chronic pain management and treatment, monthly bundle including, diagnosis; assessment and monitoring; administration of a validated pain rating scale or tool; the development…G3003Each additional 15 minutes of chronic pain management and treatment by a physician or other qualified health care professional, per calendar month. (list separately in addition…G4000Dermatology mips specialty setG4002Electrophysiology cardiac specialist mips specialty setG4003Emergency medicine mips specialty setG4004Endocrinology mips specialty setG4005Family medicine mips specialty setG4006Gastro-enterology mips specialty setG4007General surgery mips specialty set