Mibm but no dx of breast ca
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)
curl https://api.healthcare.dev/v1/codes/hcpcs/G8946 \ -H "Authorization: Bearer $HDEV_API_KEY"
{
"data": {
"code": "G8946",
"parent": null,
"status": "active",
"system": "hcpcs",
"display": "Mibm but no dx of breast ca",
"billable": true,
"attributes": {
"betos": "M5B",
"coverage": "C",
"action_code": "N",
"type_of_service": "1",
"pricing_indicator": "00",
"action_effective_date": "2014-01-01"
},
"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)",
"replaced_by": [],
"effective_end": null,
"effective_start": "2013-01-01",
"care_categories": [],
"care_category_details": []
},
"meta": {
"source": "cms-hcpcs",
"data_version": "2026-10"
}
}CMS attributes
Change history
G8946 has been in effect since 2013-01-01. This page shows HCPCS Level II release 2026-10.
Add as_of=YYYY-MM-DD to the request to get this code exactly as it was on a past date. The change feed (GET /v1/changes) lists what each release added, changed or retired across the whole dataset; a per-code change list isn't published yet.
Use it
curl https://api.healthcare.dev/v1/codes/hcpcs/G8946 \ -H "Authorization: Bearer $HDEV_API_KEY"
Using the healthcare.dev MCP server, look up HCPCS Level II code G8946. Tell me what it covers, whether it is active and since when, and any CMS attributes it has.
Source: CMS, release 2026-10. Public domain (D-series CDT codes excluded). Reference data, not medical or billing advice.