Respiratory, Developmental, Rehabilitative and Restorative Service Providers / 2279P1004X
Individual · specialization
2279P1004X Pulmonary Diagnostics Registered Respiratory Therapist
2279P1004X is the taxonomy code for Pulmonary Diagnostics, a specialization of Respiratory Therapist, Registered, 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 2279P1004X
- 2Level Specialization
- 3Medicare specialty Not in the crosswalk
- 4Codes in this group 82
Definition
Included in the area of pulmonary diagnostics are the following; collection and analysis of physiological specimens, interpretation of physiological data, administration of tests of the cardiopulmonary system, and the conduct of both neurophysiological and sleep disorders studies.
— NUCC Health Care Provider Taxonomy, version 26.1
Where 2279P1004X sits
- Group: Respiratory, Developmental, Rehabilitative and Restorative Service Providers — code 76 of 82 in the group
- Classification: Respiratory Therapist, Registered 227900000X
- Specialization: Pulmonary Diagnostics 2279P1004X
Choose 2279P1004X over the general Respiratory Therapist, Registered code (227900000X) when the provider's training or certification is specifically in pulmonary diagnostics; 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
2279P1004X 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
| Code | Respiratory Therapist, Registered — other specializations |
|---|---|
| 2279P3900X | Neonatal/Pediatrics |
| 2279P3800X | Palliative/Hospice |
| 2279P4000X | Patient Transport |
| 2279P1006X | Pulmonary Function Technologist |
| 2279P1005X | Pulmonary Rehabilitation |
| 2279S1500X | SNF/Subacute Care |
The nearest 6 of 13 other codes under Respiratory Therapist, Registered; all are on the group page.
History of 2279P1004X
NUCC's notes record no dated changes for 2279P1004X. 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 2279P1004X 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 2279P1004X
Using 2279P1004X
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.