HCPCS Level II · Procedures and professional services (temporary)
G9143Warfarin responsiveness testing by genetic technique using any method, any number of specimen(s)
✓ Active
Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About G9143
G9143 is an HCPCS Level II code in the G series (procedures and professional services (temporary)), describing warfarin responsiveness testing by genetic technique using any method, any number of specimen(s).
It was added to HCPCS effective 08/03/2009, and its current record took effect 01/01/2014.
Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.
Details
- Short description
- Warfarin respon genetic test
- Date added
- 08/03/2009
- Action effective
- 01/01/2014
- BETOS
- M5D
Related G91xx codes
- G9100Oncology; 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)
- G9101Oncology; 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)
- G9102Oncology; 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)
- G9103Oncology; 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)
- G9104Oncology; 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)
- G9105Oncology; 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)
- G9106Oncology; 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)
- G9107Oncology; 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)
- G9108Oncology; 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)
- G9109Oncology; 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)
- G9110Oncology; 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)
- G9111Oncology; 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)
Common questions about G9143
Is HCPCS G9143 still valid?
- Yes. G9143 is active in the CMS October 2026 HCPCS file.
Does Medicare cover G9143?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.