G9420 – Specimen site other than anatomic location of lung or is not classified as primary non-small cell lung cancer
HCPCS Level II code · G codes: Procedures / Professional Services (Temporary)
HCPCS codeG9420
- Long description
- Specimen site other than anatomic location of lung or is not classified as primary non-small cell lung cancer
- Short description
- Spec site no lung
- 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
Z2Undefined codes- Added
- January 1, 2015
- Last change
- January 1, 2015 – No change
Frequently asked questions
What is HCPCS code G9420?
G9420 is a HCPCS Level II code for specimen site other than anatomic location of lung or is not classified as primary non-small cell lung cancer.
Does Medicare cover G9420?
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
- G9412 – Patient admitted within 180 days, status post cied implantation, replacement, or revision with an infection requiring device removal or surgical revision
- G9413 – Patient not admitted within 180 days, status post cied implantation, replacement, or revision with an infection requiring device removal or surgical revision
- G9414 – Patient had one dose of meningococcal vaccine (serogroups a, c, w, y or a, c, w, y, b) on or between the patient's 10th and 13th birthdays
- G9415 – Patient did not have one dose of meningococcal vaccine (serogroups a, c, w, y or a, c, w, y, b), on or between the patient's 10th and 13th birthdays
- G9416 – Patient had one tetanus, diphtheria toxoids and acellular pertussis vaccine (tdap) on or between the patient's 10th and 13th birthdays
- G9417 – Patient did not have one tetanus, diphtheria toxoids and acellular pertussis vaccine (tdap) on or between the patient's 10th and 13th birthdays
- G9418 – Primary non-small cell lung cancer lung biopsy and cytology specimen report documents classification into specific histologic type following iaslc guidance or classified as nsclc-nos with an explanation
- G9419 – Documentation of medical reason(s) for not including the histological type or nsclc-nos classification with an explanation (e.g. specimen insufficient or non-diagnostic, specimen does not contain cancer, or other documented medical reasons)
- G9421 – 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
- G9422 – Primary lung carcinoma resection report documents pt category, pn category and for non-small cell lung cancer, histologic type (e.g., squamous cell carcinoma, adenocarcinoma and not nsclc-nos)
- G9423 – Documentation of medical reason for not including pt category, pn category and histologic type [for patient with appropriate exclusion criteria (e.g., metastatic disease, benign tumors, malignant tumors other than carcinomas, inadequate surgical specimens)]
- G9424 – Specimen site other than anatomic location of lung, or classified as nsclc-nos
- G9425 – Primary lung carcinoma resection report does not document pt category, pn category and for non-small cell lung cancer, histologic type (e.g., squamous cell carcinoma, adenocarcinoma)
- G9426 – Improvement in median time from ed arrival to initial ed oral or parenteral pain medication administration performed for ed admitted patients
- G9427 – Improvement in median time from ed arrival to initial ed oral or parenteral pain medication administration not performed for ed admitted patients
- G9428 – Pathology report includes the pt category, thickness, ulceration and mitotic rate, peripheral and deep margin status and presence or absence of microsatellitosis for invasive tumors
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.