G8946 HCPCS Level II code: Minimally invasive biopsy method attempted but not diagnostic of breast cancer (e.g., high risk lesion of breast such as atypical ductal hyperplasia, lobular…
G8946 is the HCPCS code for “Minimally invasive biopsy method attempted but not diagnostic of breast cancer (e.g., high risk lesion of breast such as atypical ductal hyperplasia, lobular neoplasia, atypical lobular hyperplasia…” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
G8946Minimally invasive biopsy method attempted but not diagnostic of breast cancer (e.g., high risk lesion of breast such as atypical ductal hyperplasia, lobular neoplasia, atypical lobular hyperplasia, lobular carcinoma in situ, atypical columnar hyperplasia, flat epithelial atypia, radial scar, complex sclerosing lesion, papillary lesion, or any lesion with spindle cells)
Short description: Mibm but no dx of breast ca
HCPCS · United States
Medicare details
The indicators CMS publishes with G8946 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
- Specialist - psychiatry
- Added
- Jan 1, 2013
Where G8946 sits
- 1G codesProcedures and professional services
- 2Active code G8946Minimally invasive biopsy method attempted but not diagnostic of breast cancer (e.g., high risk lesion of breast such as atypical ductal hyperplasia, lobular neoplasia, atypical lobular hyperplasia, lobular carcinoma in situ, atypical columnar hyperplasia, flat epithelial atypia, radial scar, complex sclerosing lesion, papillary lesion, or any lesion with spindle cells)
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 G8946 mean?
G8946 is the HCPCS code for “Minimally invasive biopsy method attempted but not diagnostic of breast cancer (e.g., high risk lesion of breast such as atypical ductal hyperplasia, lobular neoplasia, atypical lobular hyperplasia, lobular carcinoma in situ, atypical columnar hyperplasia, flat epithelial atypia, radial scar, complex sclerosing lesion, papillary lesion, or any lesion with spindle cells)” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover G8946?
CMS lists G8946’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 G8946
All G codesG8939Pain assessment documented as positive, follow-up plan not documented, documentation the patient is not eligible at the time of the encounterG8940Screening for depression documented as positive, a follow-up plan not completed, documented reasonG8941Elder maltreatment screen documented as positive, follow-up plan not documented, documentation the patient is not eligible for follow-up plan at the time of the encounterG8942Functional outcome assessment using a standardized tool is documented within the previous 30 days and a care plan, based on identified deficiencies is documented within two days…G8943Ldl-c result not present or not within 12 months priorG8944Ajcc melanoma cancer stage 0 through iic melanomaG8947One or more neuropsychiatric symptomsG8948No neuropsychiatric symptomsG8949Documentation of patient reason(s) for patient not receiving counseling for diet and physical activity (e.g., patient is not willing to discuss diet or exercise interventions to…G8950Elevated or hypertensive blood pressure reading documented, and the indicated follow-up is documentedG8951Pre-hypertensive or hypertensive blood pressure reading documented, indicated follow-up not documented, documentation the patient is not eligibleG8952Elevated or hypertensive blood pressure reading documented, indicated follow-up not documented, reason not given