246XC2903X Vascular Specialist/Technologist Cardiovascular

Definition

A vascular technologist, also known as a vascular sonographer, creates images of blood vessels and collects data that help physicians diagnose disorders affecting blood flow. Vascular technologists often evaluate blood flow and identify blocked arteries or blood clots.

— NUCC Health Care Provider Taxonomy, version 26.1

Where 246XC2903X sits

• Group: Technologists, Technicians & Other Technical Service Providers — code 20 of 65 in the group
• Classification: Specialist/Technologist Cardiovascular 246X00000X
• Specialization: Vascular Specialist 246XC2903X

Choose 246XC2903X over the general Specialist/Technologist Cardiovascular code (246X00000X) when the provider's training or certification is specifically in vascular specialist; the general code covers the classification as a whole. A provider may report more than one taxonomy code on an NPI but marks one as primary.

Medicare

246XC2903X has no entry in the CMS Medicare Provider and Supplier Taxonomy Crosswalk. That usually means Medicare does not enroll this kind of provider under its own specialty — the provider can still hold an NPI and use this code on claims to other payers.

Related codes

History of 246XC2903X

NUCC's notes record no dated changes for 246XC2903X. The code set is republished every January and July, when codes are added, retitled or marked inactive; this page reflects version 26.1, so check the NUCC site if you are reading it after the next release.

Similar codes in other groups

If 246XC2903X 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:

• 2084V0102X Vascular Neurology Physician (Allopathic & Osteopathic Physicians)
• 2085R0204X Vascular & Interventional Radiology Physician (Allopathic & Osteopathic Physicians)
• 2086S0129X Vascular Surgery Physician (Allopathic & Osteopathic Physicians)
• 208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians)

Using 246XC2903X

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). Checked 2026-10-24. Methodology.