Allopathic & Osteopathic Physicians / 208G00000X
Individual · classification · Medicare specialty 02
208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
208G00000X is the taxonomy code for Thoracic Surgery (Cardiothoracic Vascular Surgery), in the NUCC group “Allopathic & Osteopathic Physicians”. It is a code for individual providers — the kind used on a Type 1 NPI. Medicare maps it to specialty 02, Physician/General Surgery, under which 27,817 practitioners are enrolled, and to 2 other specialties listed below.
- 1Taxonomy code 208G00000X
- 2Level Classification
- 3Medicare specialty 02 Physician/General Surgery
- 4Codes in this group 238
Definition
A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 208G00000X sits
- Group: Allopathic & Osteopathic Physicians — code 234 of 238 in the group
- Classification: Thoracic Surgery (Cardiothoracic Vascular Surgery) 208G00000X
Thoracic Surgery (Cardiothoracic Vascular Surgery) has no specializations, so 208G00000X is the only code for it. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
CMS's taxonomy crosswalk links 208G00000X to Medicare specialty 02 (Physician/General Surgery) and Medicare specialty 33 (Physician/Thoracic Surgery) and Medicare specialty 78 (Physician/Cardiac Surgery). That specialty — not the taxonomy code itself — is what Medicare enrollment records and uses for payment. 27,817 practitioners are enrolled under it nationally, and 24 other taxonomy codes map to the same specialty.
Other codes under the same Medicare specialty: 204E00000X Oral & Maxillofacial Surgery (D.M.D.); 204F00000X Transplant Surgery Physician; 207T00000X Neurological Surgery Physician; 207X00000X Orthopaedic Surgery Physician; 207XP3100X Pediatric Orthopaedic Surgery Physician; 207XS0106X Orthopaedic Hand Surgery Physician; 207XS0114X Adult Reconstructive Orthopaedic Surgery Physician; 207XS0117X Orthopaedic Surgery of the Spine Physician; and 16 more.
Related codes
No other codes share the classification Thoracic Surgery (Cardiothoracic Vascular Surgery). The rest of Allopathic & Osteopathic Physicians is on the group page.
History of 208G00000X
NUCC's earliest recorded change to 208G00000X is from 2007 (definition added, source added).
- 2007-07-01 — definition added, source added
Similar codes in other groups
If 208G00000X is not quite right, these codes in other groups share a word with it — often the same field practised by a different kind of provider:
- 1223S0112X Oral and Maxillofacial Surgery (Dentist) (Dental Providers)
- 163WS0121X Plastic Surgery Registered Nurse (Nursing Service Providers)
- 213ES0103X Foot & Ankle Surgery Podiatrist (Podiatric Medicine & Surgery Service Providers)
- 213ES0131X Foot Surgery Podiatrist (Podiatric Medicine & Surgery Service Providers)
- 2471V0105X Vascular Sonography Radiologic Technologist (Technologists, Technicians & Other Technical Service Providers)
- 2471V0106X Vascular-Interventional Technology Radiologic Technologist (Technologists, Technicians & Other Technical Service Providers)
Find providers with 208G00000X
Using 208G00000X
The code goes in the taxonomy field of the NPI application in NPPES, and on claims where a payer asks for it — box 24J (shaded) or 33b on the CMS-1500 with the ZZ qualifier, or the PRV segment of an 837 electronic claim. Payers match it against the taxonomy on the NPI record and, for Medicare, against the specialty on the enrollment, so all three should agree. To see which code a provider uses, search their NPI in the lookup.
Sources: NUCC Health Care Provider Taxonomy code set, version 26.1 (CSV); CMS Medicare Provider and Supplier Taxonomy Crosswalk, August 2026; CMS Medicare Fee-For-Service Public Provider Enrollment, extract of 2026-09-29. Checked 2026-10-24. Methodology.