G9131
HCPCSOnc dx brst unknown nos
Official HCPCS Level II long descriptor
Oncology; disease status; invasive female breast cancer (does not include ductal carcinoma in situ); adenocarcinoma as predominant cell type; extent of disease unknown, staging in progress, or not listed (for use in a medicare-approved demonstration project)
HCPCS Level II code G9131 is maintained by CMS and is active in the current quarterly release.
Short descriptor
Onc dx brst unknown nos
Added to HCPCS: 2007-01-01
Nearby codes in G9
- G9117Onc dx ovarian unknown nos
- G9123Onc dx cml chronic phase
- G9124Onc dx cml acceler phase
- G9125Onc dx cml blast phase
- G9126Onc dx cml remission
- G9128Onc dx multi myeloma stage i
- G9129Onc dx mult myeloma stg2 hig
- G9130Onc dx multi myeloma unknown
- G9132Onc dx prostate mets no cast
- G9133Onc dx prostate clinical met
- G9134Onc nhlstg 1-2 no relap no
- G9135Onc dx nhl stg 3-4 not relap
- G9136Onc dx nhl trans to lg bcell
- G9137Onc dx nhl relapse/refractor
- G9138Onc dx nhl stg unknown
- G9139Onc dx cml dx status unknown
Where this code sits
Krasyn AI Coder
Get code suggestions automatically as you type notes. Free for 50 analyses.
Install for Chrome — freeSource
HCPCS Level II July 2026 quarterly update. Centers for Medicare & Medicaid Services (CMS), “July 2026 Alpha-Numeric HCPCS File” (HCPC2026_JUL_ANWEB_06172026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.