G9128 — Oncology; disease status; limited to multiple myeloma, systemic disease; smoldering, stage i (for use in a medicare-approved demonstration project)
G9128 is a HCPCS Level II code for oncology; disease status; limited to multiple myeloma, systemic disease; smoldering, stage i (for use in a medicare-approved demonstration project). It belongs to the Procedures and Professional Services (Temporary) section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusM
Measurement code. Used for reporting purposes only; never paid.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
The CMS record for G9128
- Long descriptor
- Oncology; disease status; limited to multiple myeloma, systemic disease; smoldering, stage i (for use in a medicare-approved demonstration project)
- Short descriptor
- Onc dx multi myeloma stage i
- Added
- January 1, 2006
- BETOS
- P7B
- Pricing indicator
- 00 — Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Service not separately priced by Part B — not covered, bundled into another service, or used by Part A only.
Codes adjacent to G9128
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If G9128 is not quite right, the correct code is very often within a few positions of it.
- G9114Oncology; disease status; ovarian cancer, limited to epithelial cancer; pathologic stage ia-b (grade 2-3); or stage ic (all grades); or stage ii; without evidence of disease progression, recurrence, or metastases (for use in a medicare-approved demonstration project)
- G9115Oncology; disease status; ovarian cancer, limited to epithelial cancer; pathologic stage iii-iv; without evidence of progression, recurrence, or metastases (for use in a medicare-approved demonstration project)
- G9116Oncology; disease status; ovarian cancer, limited to epithelial cancer; evidence of disease progression, or recurrence, and/or platinum resistance (for use in a medicare-approved demonstration project)
- G9117Oncology; disease status; ovarian cancer, limited to epithelial cancer; extent of disease unknown, staging in progress, or not listed (for use in a medicare-approved demonstration project)
- G9123Oncology; disease status; chronic myelogenous leukemia, limited to philadelphia chromosome positive and/or bcr-abl positive; chronic phase not in hematologic, cytogenetic, or molecular remission (for use in a medicare-approved demonstration project)
- G9124Oncology; disease status; chronic myelogenous leukemia, limited to philadelphia chromosome positive and/or bcr-abl positive; accelerated phase not in hematologic cytogenetic, or molecular remission (for use in a medicare-approved demonstration project)
- G9125Oncology; disease status; chronic myelogenous leukemia, limited to philadelphia chromosome positive and/or bcr-abl positive; blast phase not in hematologic, cytogenetic, or molecular remission (for use in a medicare-approved demonstration project)
- G9126Oncology; disease status; chronic myelogenous leukemia, limited to philadelphia chromosome positive and/or bcr-abl positive; in hematologic, cytogenetic, or molecular remission (for use in a medicare-approved demonstration project)
- G9129Oncology; disease status; limited to multiple myeloma, systemic disease; stage ii or higher (for use in a medicare-approved demonstration project)
- G9130Oncology; disease status; limited to multiple myeloma, systemic disease; extent of disease unknown, staging in progress, or not listed (for use in a medicare-approved demonstration project)
- G9131Oncology; 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)
- G9132Oncology; disease status; prostate cancer, limited to adenocarcinoma; hormone-refractory/androgen-independent (e.g., rising psa on anti-androgen therapy or post-orchiectomy); clinical metastases (for use in a medicare-approved demonstration project)
- G9133Oncology; disease status; prostate cancer, limited to adenocarcinoma; hormone-responsive; clinical metastases or m1 at diagnosis (for use in a medicare-approved demonstration project)
- G9134Oncology; disease status; non-hodgkin's lymphoma, any cellular classification; stage i, ii at diagnosis, not relapsed, not refractory (for use in a medicare-approved demonstration project)
- G9135Oncology; disease status; non-hodgkin's lymphoma, any cellular classification; stage iii, iv, not relapsed, not refractory (for use in a medicare-approved demonstration project)
- G9136Oncology; disease status; non-hodgkin's lymphoma, transformed from original cellular diagnosis to a second cellular classification (for use in a medicare-approved demonstration project)
Questions about G9128
What is HCPCS code G9128?
G9128 is a HCPCS Level II code for oncology; disease status; limited to multiple myeloma, systemic disease; smoldering, stage i (for use in a medicare-approved demonstration project). It sits in the Procedures and Professional Services (Temporary) section.
Does Medicare cover G9128?
The CMS HCPCS file marks G9128 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
How is G9128 paid under the physician fee schedule?
G9128 carries PFS status code M. Measurement code. Used for reporting purposes only; never paid.