Q2 HCPCS Level II modifier: Demonstration procedure/service
Q2 is a HCPCS Level II modifier: “Demonstration procedure/service.” It adds this detail to the code it is reported with.
Official description
Q2Demonstration procedure/service
Short description: Demo procedure, service
HCPCS · United States
Notes for Q2
As CMS prints them, with any note Q2 takes from the headings above it.
Note
- CMS processing note 0046: THIS MODIFIER (Q2) IS AUTHORIZED FOR USE BY THE HCFA OFFICE OF RESEARCH AND DEMONSTRATIONS ONLY; FOR CLAIMS SUBMITTED TO ORD FOR PAYMENT IN CONNECTION WITH DEMONSTRATION PROJECTS.
Medicare details
The indicators CMS publishes with Q2 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Added
- Jan 1, 1992
Where Q2 sits
- 1GroupHCPCS modifiers
- 2Modifier Q2Demonstration procedure/service
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 Q2 mean?
Q2 is the HCPCS code for “Demonstration procedure/service” in CMS’s HCPCS Level II October 2026 release.
Where is Q2 in the HCPCS Level II list?
Q2 is listed under Modifiers.
Does Medicare cover Q2?
CMS lists Q2’s Medicare coverage as “Carrier judgment”. 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 Q2
All modifiersPNNon-excepted service provided at an off-campus, outpatient, provider-based department of a hospitalPOExcepted service provided at an off-campus, outpatient, provider-based department of a hospitalPSPositron emission tomography (pet) or pet/computed tomography (ct) to inform the subsequent treatment strategy of cancerous tumors when the beneficiary's treating physician…PTColorectal cancer screening test; converted to diagnostic test or other procedureQ0Investigational clinical service provided in a clinical research study that is in an approved clinical research studyQ1Routine clinical service provided in a clinical research study that is in an approved clinical research studyQ3Live kidney donor surgery and related servicesQ4Service for ordering/referring physician qualifies as a service exemptionQ5Service furnished under a reciprocal billing arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a…Q6Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in…Q7One class a findingQ8Two class b findings