Respiratory, Developmental, Rehabilitative and Restorative Service Providers / 225B00000X
Individual · classification
225B00000X Pulmonary Function Technologist
225B00000X is the taxonomy code for Pulmonary Function Technologist, in the NUCC group “Respiratory, Developmental, Rehabilitative and Restorative Service Providers”. It is a code for individual providers — the kind used on a Type 1 NPI. It has no entry in the CMS Medicare taxonomy crosswalk.
- 1Taxonomy code 225B00000X
- 2Level Classification
- 3Medicare specialty Not in the crosswalk
- 4Codes in this group 82
Definition
An individual who is trained and qualified to perform pulmonary diagnostic tests. In the course of conducting these tests, the Pulmonary Function Technologist is able to setup, calibrate, maintain, and ensure the quality assurance of the pulmonary function testing equipment. In the laboratory, clinical or patient care setting the technologist instructs patients, elicits cooperation, performs procedures, monitors patient response, and evaluates patient performance. Tests results are calculated, compared with predicted normal ranges, and evaluated for reliability. The technologist collects clinical history data and evaluates the clinical implications of the test results.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 225B00000X sits
- Group: Respiratory, Developmental, Rehabilitative and Restorative Service Providers — code 44 of 82 in the group
- Classification: Pulmonary Function Technologist 225B00000X
Pulmonary Function Technologist has no specializations, so 225B00000X is the only code for it. A provider may report more than one taxonomy code on an NPI but marks one as primary.
Medicare
225B00000X 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 Pulmonary Function Technologist. The rest of Respiratory, Developmental, Rehabilitative and Restorative Service Providers is on the group page.
History of 225B00000X
NUCC's notes record no dated changes for 225B00000X. 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 225B00000X 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:
- 207RP1001X Pulmonary Disease Physician (Allopathic & Osteopathic Physicians)
Find providers with 225B00000X
Using 225B00000X
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.