G8946 – 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)

HCPCS Level II code · G codes: Procedures / Professional Services (Temporary)

Active code Carrier judgment

HCPCS codeG8946
Long description
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)
Short description
Mibm but no dx of breast ca
Pricing indicator
00 Not separately priced by Part B (bundled, not covered or Part A only)
Medicare coverage
C Carrier judgment – coverage decided by the Medicare contractor
BETOS category
M5B Specialist - psychiatry
Added
January 1, 2013
Last change
January 1, 2014 – No change

Frequently asked questions

What is HCPCS code G8946?

G8946 is a HCPCS Level II 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).

Does Medicare cover G8946?

The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.

Nearby G codes

Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.