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)

Short descriptor: Mibm but no dx of breast ca

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G8946 is the 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) (2026). It belongs to Section G — Procedures / Professional Services (Temporary). Under Medicare, its coverage status is: Carrier judgment. Part B pricing methodology: Not separately priced by Part B.

Classification & CMS Attributes

Medicare Coverage
Carrier judgment (code C)
Part B Pricing
Not separately priced by Part B (indicator 00)
Type of Service
Medical care
Effective Date
2014-01-01
2026 Maintenance
No change this year

References

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Reference G8946 with the canonical source and edition:

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). ICD-10 Coding Pro (HCPCS Level II 2026). https://icd10codingpro.com/hcpcs-codes/G8946

Canonical URL: https://icd10codingpro.com/hcpcs-codes/G8946

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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2026-01-01

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