G9100 – Oncology; disease status; gastric cancer, limited to adenocarcinoma as predominant cell type; post r0 resection (with or without neoadjuvant therapy) with no evidence of disease recurrence, progression, or metastases (for use in a medicare-approved demonstration project)
HCPCS Level II code · G codes: Procedures / Professional Services (Temporary)
HCPCS codeG9100
- Long description
- Oncology; disease status; gastric cancer, limited to adenocarcinoma as predominant cell type; post r0 resection (with or without neoadjuvant therapy) with no evidence of disease recurrence, progression, or metastases (for use in a medicare-approved demonstration project)
- Short description
- Onc dx gastric no recurrence
- Pricing indicator
00Not separately priced by Part B (bundled, not covered or Part A only)- Medicare coverage
CCarrier judgment – coverage decided by the Medicare contractor- BETOS category
P7BOncology - other- Added
- January 1, 2006
- Last change
- January 1, 2007 – No change
Frequently asked questions
What is HCPCS code G9100?
G9100 is a HCPCS Level II code for oncology; disease status; gastric cancer, limited to adenocarcinoma as predominant cell type; post r0 resection (with or without neoadjuvant therapy) with no evidence of disease recurrence, progression, or metastases (for use in a medicare-approved demonstration project).
Does Medicare cover G9100?
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
- G9092 – Oncology; disease status; rectal cancer, limited to invasive cancer, adenocarcinoma as predominant cell type; extent of disease initially established as t1-3, n1-2, m0 (prior to neo-adjuvant therapy, if any) with no evidence of disease progression, recurrence or metastases (for use in a medicare-approved demonstration project)
- G9093 – Oncology; disease status; rectal cancer, limited to invasive cancer, adenocarcinoma as predominant cell type; extent of disease initially established as t4, any n, m0 (prior to neo-adjuvant therapy, if any) with no evidence of disease progression, recurrence, or metastases (for use in a medicare-approved demonstration project)
- G9094 – Oncology; disease status; rectal cancer, limited to invasive cancer, adenocarcinoma as predominant cell type; m1 at diagnosis, metastatic, locally recurrent, or progressive (for use in a medicare-approved demonstration project)
- G9095 – Oncology; disease status; rectal cancer, limited to invasive cancer, adenocarcinoma as predominant cell type; extent of disease unknown, staging in progress, or not listed (for use in a medicare-approved demonstration project)
- G9096 – Oncology; disease status; esophageal cancer, limited to adenocarcinoma or squamous cell carcinoma as predominant cell type; extent of disease initially established as t1-t3, n0-n1 or nx (prior to neo-adjuvant therapy, if any) with no evidence of disease progression, recurrence, or metastases (for use in a medicare-approved demonstration project)
- G9097 – Oncology; disease status; esophageal cancer, limited to adenocarcinoma or squamous cell carcinoma as predominant cell type; extent of disease initially established as t4, any n, m0 (prior to neo-adjuvant therapy, if any) with no evidence of disease progression, recurrence, or metastases (for use in a medicare-approved demonstration project)
- G9098 – Oncology; disease status; esophageal cancer, limited to adenocarcinoma or squamous cell carcinoma as predominant cell type; m1 at diagnosis, metastatic, locally recurrent, or progressive (for use in a medicare-approved demonstration project)
- G9099 – Oncology; disease status; esophageal cancer, limited to adenocarcinoma or squamous cell carcinoma as predominant cell type; extent of disease unknown, staging in progress, or not listed (for use in a medicare-approved demonstration project)
- G9101 – Oncology; disease status; gastric cancer, limited to adenocarcinoma as predominant cell type; post r1 or r2 resection (with or without neoadjuvant therapy) with no evidence of disease progression, or metastases (for use in a medicare-approved demonstration project)
- G9102 – Oncology; disease status; gastric cancer, limited to adenocarcinoma as predominant cell type; clinical or pathologic m0, unresectable with no evidence of disease progression, or metastases (for use in a medicare-approved demonstration project)
- G9103 – Oncology; disease status; gastric cancer, limited to adenocarcinoma as predominant cell type; clinical or pathologic m1 at diagnosis, metastatic, locally recurrent, or progressive (for use in a medicare-approved demonstration project)
- G9104 – Oncology; disease status; gastric cancer, limited to adenocarcinoma as predominant cell type; extent of disease unknown, staging in progress, or not listed (for use in a medicare-approved demonstration project)
- G9105 – Oncology; disease status; pancreatic cancer, limited to adenocarcinoma as predominant cell type; post r0 resection without evidence of disease progression, recurrence, or metastases (for use in a medicare-approved demonstration project)
- G9106 – Oncology; disease status; pancreatic cancer, limited to adenocarcinoma; post r1 or r2 resection with no evidence of disease progression, or metastases (for use in a medicare-approved demonstration project)
- G9107 – Oncology; disease status; pancreatic cancer, limited to adenocarcinoma; unresectable at diagnosis, m1 at diagnosis, metastatic, locally recurrent, or progressive (for use in a medicare-approved demonstration project)
- G9108 – Oncology; disease status; pancreatic cancer, limited to adenocarcinoma; extent of disease unknown, staging in progress, or not listed (for use in a medicare-approved demonstration project)
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.