G9101 Onc dx gastric p r1-r2noprog

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)

Medicare pricing for G9101

Physician Fee Schedule (CY 2026, RVU26D)

Status M: measurement code, reporting only.

Payer policies and prior authorization for G9101

Medicaid fee-for-service

Prior authorization required or conditional in IN.

  • VT: $0.00 (outpatient_hospital_opps), effective Feb 1, 2026
  • WY: $0.00 (outpatient_hospital_apc, Children's Hospitals), effective Apr 1, 2026

From payers' published prior-auth lists, coverage policies and state Medicaid fee schedules, updated Oct 16, 2026. The role is what the policy's own code table or text says about the code. Not a guarantee of coverage or payment; verify with the payer. CPT® is a registered trademark of the American Medical Association.