G9140 HCPCS code: Frontier extended stay clinic demonstration; for a patient stay in a clinic approved for the cms demonstration project; the following measures should be present: the stay must be equal to or greater than 4 hours; weather or other conditions must prevent transfer or the case falls into a category of monitoring and observation cases that are permitted by the rules of the demonstration; there is a maximum frontier extended stay clinic (fesc) visit of 48 hours, except in the case when weather or other conditions prevent transfer; payment is made on each period up to 4 hours, after the first 4 hours
G9140 is the HCPCS Level II code for frontier extended stay clinic demonstration; for a patient stay in a clinic approved for the cms demonstration project; the following measures should be present: the stay must be equal to or greater than 4 hours; weather or other conditions must prevent transfer or the case falls into a category of monitoring and observation cases that are permitted by the rules of the demonstration; there is a maximum frontier extended stay clinic (fesc) visit of 48 hours, except in the case when weather or other conditions prevent transfer; payment is made on each period up to 4 hours, after the first 4 hours. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case.
Code details
| Field | Value |
|---|---|
| Section | G codes — Procedures and professional services (temporary) |
| Coverage code | C — Carrier judgment |
| Pricing indicator | 00 — Not separately priced by Medicare |
| BETOS category | Z2 |
| Added | 2007-10-01 |
| Last action effective | 2007-10-01 |
What changed for G9140
- 2007-10-01: G9140 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code G9140?
G9140 is the HCPCS Level II code for frontier extended stay clinic demonstration; for a patient stay in a clinic approved for the cms demonstration project; the following measures should be present: the stay must be equal to or greater than 4 hours; weather or other conditions must prevent transfer or the case falls into a category of monitoring and observation cases that are permitted by the rules of the demonstration; there is a maximum frontier extended stay clinic (fesc) visit of 48 hours, except in the case when weather or other conditions prevent transfer; payment is made on each period up to 4 hours, after the first 4 hours. Short descriptor: "Frontier extended stay demo".
Does Medicare cover G9140?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
Related G91 codes
- 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)
- 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)
- G9109 — Oncology; disease status; head and neck cancer, limited to cancers of oral cavity, pharynx and larynx with squamous cell as predominant cell type; extent of disease initially established as t1-t2 and n0, 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)
- G9110 — Oncology; disease status; head and neck cancer, limited to cancers of oral cavity, pharynx and larynx with squamous cell as predominant cell type; extent of disease initially established as t3-4 and/or n1-3, 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)
- G9111 — Oncology; disease status; head and neck cancer, limited to cancers of oral cavity, pharynx and larynx with squamous cell as predominant cell type; m1 at diagnosis, metastatic, locally recurrent, or progressive (for use in a medicare-approved demonstration project)
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Next steps
- Run a reimbursement report for a device billed under G9140
- Watch G9140 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for G9140
Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.