G9421 Lung cx bx rpt no doc class

Primary non-small cell lung cancer lung biopsy and cytology specimen report does not document classification into specific histologic type or histologic type does not follow iaslc guidance or is classified as nsclc-nos but without an explanation

Medicare pricing for G9421

Physician Fee Schedule (CY 2026, RVU26D)

Status M: measurement code, reporting only.

Payer policies and prior authorization for G9421

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.