242T00000X Perfusionist

Definition

A perfusionist operates extracorporeal circulation and autotransfusion equipment during any medical situation where it is necessary to support or temporarily replace the patient's circulatory or respiratory function. The perfusionist is knowledgeable concerning the variety of equipment available to perform extracorporeal circulation functions and is responsible, in consultation with the physician, for selecting the appropriate equipment and techniques to be used.

— NUCC Health Care Provider Taxonomy, version 26.1

Where 242T00000X sits

• Group: Technologists, Technicians & Other Technical Service Providers — code 1 of 65 in the group
• Classification: Perfusionist 242T00000X

Perfusionist has no specializations, so 242T00000X is the only code for it. A provider may report more than one taxonomy code on an NPI but marks one as primary.

Medicare

242T00000X 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

No other codes share the classification Perfusionist. The rest of Technologists, Technicians & Other Technical Service Providers is on the group page.

History of 242T00000X

242T00000X was added to the code set in 2007.

• 2007-01-01 — new

Using 242T00000X

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.