G9911 HCPCS Level II code: Clinically node negative (t1n0m0 or t2n0m0) invasive breast cancer before or after neoadjuvant systemic therapy
G9911 is the HCPCS code for “Clinically node negative (t1n0m0 or t2n0m0) invasive breast cancer before or after neoadjuvant systemic therapy” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
G9911Clinically node negative (t1n0m0 or t2n0m0) invasive breast cancer before or after neoadjuvant systemic therapy
Short description: Node neg pre/post syst ther
HCPCS · United States
Medicare details
The indicators CMS publishes with G9911 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, 2018
Where G9911 sits
- 1G codesProcedures and professional services
- 2Active code G9911Clinically node negative (t1n0m0 or t2n0m0) invasive breast cancer before or after neoadjuvant systemic therapy
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 G9911 mean?
G9911 is the HCPCS code for “Clinically node negative (t1n0m0 or t2n0m0) invasive breast cancer before or after neoadjuvant systemic therapy” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover G9911?
CMS lists G9911’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 G9911
All G codesG9905Patient not screened for tobacco useG9906Patient identified as a tobacco user received tobacco cessation intervention during the measurement period or in the six months prior to the measurement period (counseling and/or…G9907Documentation of medical reason(s) for not providing tobacco cessation intervention on the date of the encounter or within the previous 12 months (e.g., limited life expectancy…G9908Patient identified as tobacco user did not receive tobacco cessation intervention during the measurement period or in the six months prior to the measurement period (counseling…G9909Documentation of medical reason(s) for not providing tobacco cessation intervention on the date of the encounter or within the previous 12 months if identified as a tobacco user…G9910Patients age 66 or older in institutional special needs plans (snp) or residing in long-term care with pos code 32, 33, 34, 54 or 56 for more than 90 consecutive days during the…G9912Hepatitis b virus (hbv) status assessed and results interpreted prior to initiating anti-tnf (tumor necrosis factor) therapyG9913Hepatitis b virus (hbv) status not assessed and results interpreted prior to initiating anti-tnf (tumor necrosis factor) therapy, reason not otherwise specifiedG9914Patient initiated an anti-tnf agentG9915No record of hbv results documentedG9916Functional status performed once in the last 12 monthsG9917Documentation of advanced stage dementia and caregiver knowledge is limited